EurekaMag
+ Translate
+ Most Popular
Advantages and disadvantages of bordeaux mixture and of lime-sulphur used on apples in the growing season
Observations on the Umaria marine bed
10 years of hearing conservation in the Royal Air Force
Chocolate crumb - dairy ingredient for milk chocolate
Effect of daily gelatin ingestion on human scalp hair
Comparison of rice bran and maize bran as feeds for growing and fattening pigs
The composition of pampas-grass (Cortaderia argentea.)
The Accraian Series:
The mechanism of the Liebermann-Burchard reaction of sterols and triterpenes and their esters
Cerebrovascular Doppler ultrasound studies (cv-Doppler)
Toria: PT-303 - first national variety
Hair growth promoting activity of tridax procumbens
Productivity of Pekin x Khaki Campbell ducks
A stable cytosolic expression of VH antibody fragment directed against PVY NIa protein in transgenic potato plant confers partial protection against the virus
Solar treatment of wheat loose smut
Swimmers itch in the Lake of Garda
Bactofugation and the Bactotherm process
The effects of prefrontal lobotomy on aggressive behavior in dogs
Visual rating scales for screening whorl-stage corn for resistance to fall armyworm
Breakdown of seamounts at the trench axis, viewed from gravity anomaly
Kooken; pennsylvania's toughest cave
Recovery of new dinosaur and other fossils from the Early Cretaceous Arundel Clay facies (Potomac Group) of central Maryland, U.S.A
Zubor horny (Bison bonasus) v prirodnych podmienkach Slovensku
The extended Widal test in the diagnosis of fevers due to Salmonella infection
Hair of the american mastodon indicates an adaptation to a semi aquatic habitat

List of PDF Full Texts available from EurekaMag Chapter 23224

Chapter 23224 contains a list of PDF Full Texts available from EurekaMag.




Observations on the feeding of the young of some Passeridae
, Aquila 66: 37-39 (1959)

Observations on the feeding process in Plethodontidae
, Herpetologica 3(4): 126 (1946)

Observations on the feeding, reproduction and faeces obtained from oribatids fed on different species of Penicillium and Aspergillus
, Annales Zool Ecol anim (Hors Ser): 165-176 (1971)

Observations on the feeding, shedding and growth rates of captive snakes (Boidae)
, Zoologica New York 46: 83-87 (1961)

Observations on the female form of Phengodes laticollis
, American Naturalist, XXI 853-856 (1887)

Observations on the female urogenital organs of limbless amphibian, Uraeotyphlus oxyurus
, J Morph. Physiol: 154-156 (1962)

Observations on the femoral gland of Ornithorhynchus, and its secretion; together with an experimental enquiry concerning its supposed toxic action
, Proceedings of the Linnean Society of New South Wales, IX 471-500 (1895)

Observations on the fer-de-lance, Bothrops atrox, in coastal Costa Rica
, Copeia, 453-454 (1964)

Observations on the fertility of the black widow spider
, Trans Illinois State Acad Sci 33(2): 225 (1940)

Observations on the fertility of the oyster (Ostrea edulis)
, Jbiol. Ass. U.K: 293-310 (1964)

Observations on the fertilized egg and two-cell stage of Mytilus edulis
, Int Electron Microsc 5th Philadelphia: NN10 (1962)

Observations on the fiagellates of the genera Trichomonas and Trichomostix
, Parasitology Cambridge 28: 195-201 (1936)

Observations on the field habits, haunts and nesting of the Raven (Corvus c. corax) in 1932
, Oologists' Record 12: 67-72, 79-87 (1932)

Observations on the fin abnormality of the Indian climbing perch, Anabas scandens
, Journal Annamalai Univ (B): 29: 127-128 (1974)

Observations on the fin abnormality of the Indian climbing perch, Anabos scandens
, Journal Annamalai Univ (Sci): 29: 127-128 (1975)

Observations on the fine structure and development of the cuticle of the mouse pinworms, Syphacia obvelata and Aspicularis tetraptera. Proc. 2nd Int. Congr. Parasit. (Washington 6-12 Sept. 1970)
, J. Parasit.: 56(4 Sect. 2 Pt.1: 80 (1970)

Observations on the fine structure and histochemistry of the carotid body in the cat and rabbit
, Journal of Anatomy 93: 478-490 (1959)

Observations on the fine structure of Dictyocha fibula Ehrenberg.1. The skeleton
, Journal of Phycology 7: 113-118 (1971)

Observations on the fine structure of Dictyocha fibula Ehrenburg.2. The protoplast
, Journal of Phycology 7: 118-132 (1971)

Observations on the fine structure of Paraphysomonas vestita, with special reference to the Golgi apparatus and the origin of scales
, Phycologia 1: 37-57 (1961)

Observations on the fine structure of Plasmodium traguli
, Proceedings helminthWash: 137-148 (1972)

Observations on the fine structure of a mammalian ovary (Felis domesticd) with special refer-ence to a nutrient transfer design
, Dissertation Abstracts 26: 2391 (1965)

Observations on the fine structure of gonads from SD males in Drosophila melanogaster
, Atti Associazione Genetica Italiana 13: 337-338 (1968)

Observations on the Fine Structure of Pharyngeal Muscle in the Planarian Dugesia Tigrina
, Journal of Cell Biology 18: 651-662 (1963)

Observations on the Fine Structure of Photoreceptor cells in the Planarian Dugesia Tigrina
, Journal of Ultrastructure Research 10: 334-349 (1964)

Observations on the fine structure of rat bulbourethral gland cells
, Zeitschrift für Mikroskopisch-Anatomische Forschung 80(2): 191-202 (1969)

Observations on the fine structure of spermatozoa of the bush baby (Galago senegalensis), the African green monkey (Cercopithecus aethiops) and man
, American Journal of Anatomy 121(3): 443-459 (1967)

Observations on the fine structure of the Cryptophyceae. 1. The genus Cryptomonas
, J. Phycol.: 6: 30-38 (1970)

Observations on the fine structure of the cercaria of Notocotylus attenuatus and formation of the cyst wall of the metacercaria
, Zeitschrift für Zellforschung und Mikroskopische Anatomie 120(3): 420-449 (1971 )

Observations on the fine structure of the ciliate Dileptus anser
, Jour Protozool 8(4): 392-402 (1961)

Observations on the fine structure of the cuticle of the spiny rat mite, Laelaps echidnina (Acari: Mesostigmata)
, Acarologia 10: 207-214 (1968)

Observations on the fine structure of the echinoderm larvae
, Anatomical Record, 145: 203 (1963)

Observations on the fine structure of the eyespot and associated organelles in the dinoflagellate glenodinium foliaceum
, Journal of Cell Science 5(2): 479-493 (1969)

Observations on the fine structure of the fertilization membrane of Arbacia punctulata
, Biological Bulletin Marine Biological Laboratory Woods Hole, 133: 471 (1967)

Observations on the fine structure of the growth plate in hypophysectomized rabbits and thyroparathyroidectomized rabbits
, Yonago Acta Medica 13: 208-227 (1968)

Observations on the fine structure of the infundibulum of the avian oviduct
, Journal of Anatomy 97: 87-99 (1963)

Observations on the fine structure of the intestinal epithelium in mantis shrimp
, Journal of Electron Microscopy 17: 88 (1968)

Observations on the fine structure of the macronucleus of Tokophrya infusionum
, Journal of Biophysical and Biochemical Cytology 1(5): 421-428 (1955)

Observations on the fine structure of the neoblast and its cell division in the regenerating Planaria
, Sci Tohoku Univ (Sci Rep Tohoku Univ (Biol): 33: 399-406 (1967)

Observations on the fine structure of the nuclear apparatus of Blepharisma intermedium Bhandary (Ciliata : Spirotrieha)
, Journal of Protozoology 11: 402-409 (1964)

Observations on the fine structure of the outer ectodermal cells of the gastrulae of Xenopus laevis
, Journal of Anatomy London 101: 833-834 (1967)

Observations on the fine structure of the pars intermedia in the lizard Anolis carolinensis
, General and Comparative Endocrinology 18(1): 146-161 (1972)

Observations on the fine structure of the pellicle pores of Euglena granulata
, Protoplasma 64(3): 330-344 (1967)

Observations on the fine structure of two species of the peritrich ciliate genus Scyphidia and on their mode of attachment to their host
, Transactions of the American Microscopical Society 87(4): 493-509 (1968)

Observations on the first north American breeding of the Spot-winged wood quail (Odontophorus capueira)
, Avicult. Mag.: 76: 1-2,1 p1 (1970)

Observations on the fiscal shrike
, Rhodesia Sci News 6(12): 349-351 (1972)

Observations on the fish and fishe' ies of the Vembanad backwaters, Kerala
, Proceedings of the National Academy of Sciences India, Section B, Biological Sciences 35: 115-130 (1970)

Observations on the fish fauna associated with offshore platforms in the northeastern Gulf of Mexico. Fishery
, Bull US natn ocean atmos Admn 742: 387-402 (1976)

Observations on the fish population of Rostheme Mere, Cheshire
, Fld Stud: 357-379 (1970 )

Observations on the fish population of Rostherne Mere, Cheshire
, Fld Stud.: 3: 357-379 (1970)

Observations on the fish population of Willow Creek Reservoir, Montana
, Proceedings of the Montana Academy of Sciences 21: 49-69 (1962)

Observations on the fish population of a lake contaminated by radioactive wastes
, Bulletin American Mus National Hist 110(4): 277-368 (1956)

Observations on the fish populations of a Nigerian forest stream
, Revue Zool: 257-272 (1975)

Observations on the fisheries of the Faroe Islands
, Tids Fisk, VII 97-125 (1874)

Observations on the fishery and biology of Chilka jagili, Gerres setifer (Hamilton)
, Journal Inland FishIndia: 25-43 (1971)

Observations on the fishery and biology of pink spotted shrimp.Penaeus brasiliensis Latreille. of Margarita Island. Venezuela
, Proceedings of the Gulf and Caribbean Fisheries Institute 25: 156-162 (1973)

Observations on the fishery and biology of the freshwater prawn Macrobrachium malcolmsonii Milne Edwards of River Godavari
, Indian Journal of Fisheries 9(2): 433-467 (1965)

Observations on the fishery and biology of the silver pomfret Pampus argenteus (Euphrasen) from the Bay of Bengal
, Indian Journal of Fisheries 10((A)): 59-74 (1967)

Observations on the fishes of the Fort Gibson and Ten-killer reservoir areas
, Proceedings of the Oklahoma Academy of Science 33: 55-63 (1954)

Observations on the fishes of the genus Notropis
, Washington Dc. Biol. Soc: 189-196 (1909)

Observations on the flatback turtle Chelonia depressa Garman
, Herpetologica 25: 29-34 (1969)

Observations on the fleas (Siphonaptera) of some small mammals in northwestern Illinois
, American Midland Naturalist 66: 471-476 (1961)

Observations on the flight activity of the red locust, Nomadacris septemfasciata (Serville)
, Behaviour Leiden 14: 300-334 (1959)

Observations on the flight behavior of an ascalaphid of the genus Ululodes (Neuroptera: Ascalaphidae)
, Pan-Pacific Entomologist 38: 186-188 (1962)

Observations on the flight muscles of Sitona weevils
, Ann Appl Biol 20(4): 731-770 (1933)

Observations on the flight of Flying-fish
, Annals of Natural History 7(xi): 389-393 (1903)

Observations on the flight of Noctuid moths
, Annals of the Entomological Society of America 25: 366-368 (1932)

Observations on the flight of birds and the mechanics of flight
, Transactions S African Soc, XIV 419-423 (1904)

Observations on the flight of drone honey bees
, Ann Ent Society America 49(5): 497-500, 7 (1956)

Observations on the flight of fishes, with a statistical study of the flight of the Cypselurinae and remarks on the evolution of the flight of fishes
, Papers from the Michigan Academy of Science 17: 575-611 (1933)

Observations on the flight, wing movements and wing structure of male Priacma serrata (Lec.) (Coleoptera: Cupedidae)
, Canadian Entomologist 90: 339-347 (1958)

Observations on the flora and fauna of reclaimed land at Calshot, Hampshire
, Proceedings Hamps Fld Club 29: 81-91 (1974)

Observations on the floral relationships of the Galapagos carpenter bee (Hymenoptera: Apidae)
, Pan-Pacific Entomologist 42: 1-18 (1966)

Observations on the flower visiting by cerambycid beetles (Coleoptera)
, Gensei 32: 11-13 (1977)

Observations on the fluctuations in body weight and on the course of the sexual cycle in three successive generations of mouse females
, Zoologica Poloniae 1959-1969; 10: 309-324 (1961)

Observations on the fly of rosebushes and other insects of the same habitat. Translated by Mab Bigelow, revised by R. P. Bigelow
, Isis, Bruges: 290-324 (1932)

Observations on the food and biology of the kelp bass, Paralahrax clathratus with notes on its sport fishery at San Diego, California
, Fishery Bulletin California 139: 81-108 (1968)

Observations on the food and feeding behaviour of the common Bombay cat-fish Tachysurus sona (Ham. )
, Unknown (1970)

Observations on the food and feeding habits of Bregmaceros mcClellandi Thompson
, Journal zool Soc India 232: 81-88 (1972)

Observations on the food and feeding habits of Gerres oyena (Forskal) and Gerres filamentosus Cuvier from the Pulicat lake with notes on the food of allied species. J
, J. mar. biol. Ass. India 10: 332-346 (1970)

Observations on the food and feeding habits of Otolithes cuvieri (Trewavas) off Veraval
, Indian Journal of Fisheries. July-September; 503: 379-385 (2003)

Observations on the food and feeding habits of Parastromateus niger (Bloch) of the Saurashtra coast
, Indian Journal of Fisheries 10((A)): 140-147 (1967)

Observations on the food and feeding habits of Scomberomorus guttatus (Bloch and Schneider) and the juveniles of S. lineolatus (Cuvier and Valenciennes) and S. commerson (Lacepede) from the Waltair coast
, Proceedings Symp Scombroid fishes Mar Biol Ass India (Ser 1: Pt. II 591-598 (1964)

Observations on the food and feeding habits of Uromastix hardwickii Gray
, Proceedings of the Indian Science Congress Ass 43rd, 4: 35 (1957)

Observations on the food and feeding habits of some African robins (Ames: Turdinae)
, Ann. Natal Mus.: 20: 293-327 (1970)

Observations on the food and feeding habits of some African robuis (Aves: Turdinae)
, Ann Natal Mus 20: 293-327 (1970)

Observations on the food and feeding habits of the ' torpedo trevally' Megalaspis cordyla (Linnaeus) from Vizhinjam Bay
, Indian J: 76-84 (1974)

Observations on the food and feeding habits of the Indian Mackerel Rastrelliger kanagurta (Russel)
, Journal of the Zoological Society of India 8: 99-106 (1956)

Observations on the food and feeding habits of the oceanic skipjack Katsuwonus pelamis (Linnaeus) of the Laccadive Sea during the years 1958-59
, Proceedings Scombroid fishes: 607-625 (1964)

Observations on the food and feeding of some penaeid prawns of Cochin area
, Journal of the Marine Biological Association of India 151: 189-194 (1974)

Observations on the food and nesting of the broad-winged hawk (Buteo platypterus) in northeastern Kansas
, Condor 763: 331-333 (1974)

Observations on the food and on the reproductive organs of Ostrea virginiana
, Proceedings of the Boston Society, XVI 170-172 (1874)

Observations on the food and the reproductive organs of Ostrea virginiana, with some account of Bucephalus cuculus, sp. n
, Proceedings of the Boston Society, XVI 170-92 (1874)

Observations on the food conversion efficiency and the effect of starvation in Rasbora daniconius Ham
, Journal Indian Fish Ass, 21-2: 26-29 1972 (1975)

Observations on the food conversion efficiency and the effect of starvation in Rasborna daniconius Ham
, Journal Indian Fish Ass, 21-2: 26-29 1972 (1975)

Observations on the food habits and ecological habitat of the Malaysian flying lemur Cynocephalus variegatus
, International Zoo Yearbook 7: 196-197 (1967)

Observations on the food habits of Clarias gariepinus Burchell, the South African freshwater barbel (Pisces : Clariidae) in Transvaal
, Hydrobiologia 23: 287-291 (1964)

Observations on the food habits of Entamoeba muris and Entamoeba ranarum
, Biol Bull 81(3): 324-340 (1941)

Observations on the food habits of Texas Amphibians and Reptiles
, Copeia Northampton 162: 6-9 (1927)

Observations on the food habits of adult black crappie in a California lake
, Ichthyologica 39: 93-94 (1967)

Observations on the food habits of juvenile white sturgeon
, California Fish and Game 48(1): 79-80 (1962)

Observations on the food intake, growth and conversion effeciency of Heteropneustes fossilis (Siluroidae) with particular reference to light exposure
, Proceedings of the lndian Science Congress 623(B): 182 (1975)

Observations on the food of Nephtys
, Limnol And Oceanogr 7(3): 380-385 (1962)

Observations on the food of deep sea sharks Halaelurus hispidus (Alcock). Eridacnis radcliffei Smith and /ago omanensis Compagno and Springer
, Indian Journal of Fisheries 202: 575-583 (1973)

Observations on the food of eel (Anguilla anguilla L.) in Lake Balaton
, Annales Inst biol Tihany 41: 133-152 (1974)

Observations on the food of eel (Anguilla anguilla) from the Windermere catchment area
, Journal of Animal Ecology 151: 43-53 (1940)

Observations on the food of juveniles of Psettodes erumei (Bloch)
, Indian Journal of Fisheries 202: 664-667 (1973)

Observations on the food of juveniles of Scotnberomorus commerson (Lacepede) and S. guttatus (Bloch and Schneider) from Vizhingam, west coast of India. Symp. Scombroid fishes
, : 586-590 (1964)

Observations on the food of ravens
, Rep. Skokholm Bird Obs.: 18 (1970)

Observations on the food of some birds of south-western Western Australia
, Emu 734: 191-193 (1973)

Observations on the food of the Bronzed Grackle
, Auk 61: 644-645 (1944)

Observations on the food of the aquatic Oligochaeta
, Verhandlungen Internationalen Vereinigung Limnologie 17: 829-830 (1969)

Observations on the food of the fox Vulpes vulpes (L.) in an arid environment
, CO. Wildl. Res: 73-75. (1971)

Observations on the food of the fry of Perch (Perca fluviatilis Linn.) in Windermere
, Proceedings of the Zoological Society of London 122: 407-416 (1952)

Observations on the food of the little brownsnake, Storeria dekayi, at London, Ontario
, Copeia: 62-64 (1954)

Observations on the food of the sandwhiting Sillago sihama (Forskal) from Pulicat Lake
, Jbiol. Ass. India: 295-303 (1971)

Observations on the food of three forest-dwelling lizards in California
, Herpetological Review 81: 6-7 (1977)

Observations on the food of three forest-dwelling lizards iu California
, Herpetological Review 81: 6-7 (1977)

Observations on the food of young Hilsa ilisha (Ham. ) of the Hooghly estuarine system
, J. Bombay nat. Hist. Soc.: 67: 578-583 (1970)

Observations on the food of young Hilsa ilisha (Ham. ) of the Hoogly estuarine system
, J. Bombay nat. Hist. Soc.: 67: 578-583 (1970)

Observations on the food of young Hilsa ilisha (Hamilton) around Nabadwip, in the Hooghly estuary
, Journal of the Bombay Natural History Society 65: 796-798 (1969)

Observations on the food preference of Rana cyanophlyctis tadpole
, Comparative Physiol Ecol 24: 232-233 (1977)

Observations on the food value of seven species of algae to the larvae of Ostrea edulis. I. Feeding experiments
, Journal of the Marine Biological Association of the United Kingdom 43: 767-784 (1962)

Observations on the foraging behavior and avian prey of the Neotropical carnivorous bat, Vampyrum spectrum
, Journal of Mammalogy 584: 469-478 (1977)

Observations on the foreign objects carried by the Purple-Tipped Sea-Urchin
, Zoologist, 19 441-453 (1915)

Observations on the form and proportions of the endocranial casts of Sinanthropus pekinensis, other Hominids and Great Apes: a comparative study of brain size
, Palaeontologia Sinica, D 7(4): 1-50 (1936)

Observations on the form and size distribution of chromaffin granules and on the identity of adrenaline- and noradrenaline-storing chromaffin cells in vertebrates and man
, MemEndocr: 611-635 (1971)

Observations on the formation and chemical nature of metacercarial cysts of Notocotyius urbanensis
, Journal of Infectious Diseases 104(2): 138-141 (1959)

Observations on the formation and release of secretory granules in the pituitary gland of the salamander (Triturus viridescens)
, ASB Bull: 38 (1962)

Observations on the formation of ameboid organisms from the bodies of Vorticsllae
, Anatomical Record Philadelphia 51: 80 (1931)

Observations on the formation of spermatophores in a bulimulid land snail, Drymaeus canaliculatis (Pfeiffer, 1845) (Mollusca, Gastropoda, Pulmonata)
, Netherlands J Zool 273: 271-276,I-II (1977)

Observations on the formation of the egg of Echinometra lucunter
, Carnegie Inst Washington publ 413 Papers Tortugas Lab 27: 47-52 (1931)

Observations on the formation of the feeding tube by Trombicula splendens larvae
, Proceedings 1st International Congress of Acarology 1963 Acarologia 6: 255-261 (1964)

Observations on the formation of the second polar body in the rat ovum
, Anatomical Record 110(3): 329-347 (1951)

Observations on the free amino acids in the haemolymph of Dactylosternum hydrophiiioides Mackay (Coleoptera: Hydrophilidae)
, Comparative Physiol Ecol 24: 252-254 (1977)

Observations on the fresh-water triclads of North Wales
, Ann And Mag Nat Hist 9(104): 612-622 (1956)

Observations on the freshwater fish parasite Lemea catostomi (Krayer)
, Texas Journal of Science 14: 365-367 (1962)

Observations on the freshwater mussels (Lamellibranchia: Unionacea) of Lake Mcllwaine, Rhodesia
, Arnoldia Rhodesia 716: 1-16 (1975)

Observations on the frilled Lizard, Chlamydosaurus kingi
, Proceedings of the Zoological Society, 712-719 (1895)

Observations on the function and physiological properties of a fast paramyosin muscle-the notochord of Amphioxus (Branchiostoma lanceolatum)
, J. exp. Biol.: 52: 125-138 (1970)

Observations on the function of the frog's kidney
, American Journal of Physiology 72: 189-190 (1925)

Observations on the function of the frontolateral horns and horn glands of barnacle nauplii (Cirripedia)
, Biol. Bull. mar. biol. Lab. Woods Hole 138: 211-218 (1970)

Observations on the functional anatomy of the ommastrephid, lllex illecebrosus (Lesueur, 1821) (Coleoidea: Cephalopoda), with emphasis on musculature and the blood vascular system
, Dissertation Abstracts International B, The Sciences and Engineering 34(11): 5744 (1974)

Observations on the functional anatomy of the reproductive organs of Sitophilus (Coleoptera: Curculionidae)
, Canadian Journal of Zoology 665-669; 47 (1969)

Observations on the functional compensatory hyper-trophy of the Opossum ovary
, American Journal of Anatomy 35: 1-24 (1925)

Observations on the functional development of the foetal brain
, Jour Comp Neurol 77(2): 431-542 (1942)

Observations on the fur mites (Acarina, Myobiidae)
, Annales du Musee du Congo Belge NS 4to Zool 1: 238-248 (1954)

Observations on the gamasid mites (Parasitiformes, Gamasina, Macronyssidae, Laelapidae) parasitizing reptiles (Reptilia) from Russia and adjacent countries (ex-USSR)
, Russian Journal of Herpetology 1(2): 310-311(Suppl) (2005)

Observations on the gametes, fertilization and gonadal activities ? of two land Pulmonata Achatina fulica Bowdich and Macrochlamys indica Godwin-Austen
, Proceedings of the Zoological Society Calcutta 131960: 91-96 (1961)

Observations on the gametolytic gland in the anaspidean opisthobranchs, Phyllaplysia taylori and Aplysia californica
, Journal Morph 1414: 395-410 (1973)

Observations on the gas-secreting epithelium of Physalia .
, Biological Bulletin Wood's Hole, 1232: 493 (1962)

Observations on the gastral digestive tract in the male carpenter ant, Camponotus pennsylvanicus DeGeer (Formicidae, Hymenoptera)
, Insectes Sociaux Paris 3: 505-511 (1956)

Observations on the gastropod Charonia variegata, in Trinidad and Tobago
, Nautilus Philad 853: 84-92 (1972)

Observations on the gemmule development of Chalina sp., with a note on dissociation and regeneration in the same species
, Proceedings of the Indian Science Congress 29(3): 148 (1943)

Observations on the genera Leila and Anodontites
, Nautilus Boston Mass 35: 7-10 (1922)

Observations on the genera of the swans
, Journal of the Washington Academy of Sciences 41: 338-340 (1951)

Observations on the generic nomenclature of some British Agrotidae
, Entomologist 71: 123 (1938)

Observations on the generic relationships of several small East African Helicarionidae
, Journal de Conchyliologie 100: 107-117 (1960 )

Observations on the genital organs of a sex intergrade hog
, Anatomical Record Philadelphia 26: 241-261 (1923)

Observations on the genital segments of Spirorbis (Polychaeta)
, Biological Bulletin Marine Biological Laboratory Woods Hole 132: 91-107 (1967)

Observations on the genital system and alimentary canal of a Lamiid beetle, Nupserha bicolor
, Quarterly Journal of Microscopical Science 99: 393-399 (1958)

Observations on the genitalia of the Woolly Monkey (Lagothrix)
, Proceedings of the Zoological Society of London 122: 973-984 (1953)

Observations on the genus Abasia (Copepoda) with the description of a new species
, Crustaceana 5: 1-9 (1963)

Observations on the genus Aclisina, De Koninck, with descriptions of British species and of some other Carboniferous Gasteropoda
, Quartol. Soc: 45-72 (1898)

Observations on the genus Anaspis, Geoff
, Entomologist 3: 30-34 (1866)

Observations on the genus Arius in Nigerian coastal waters
, Report Fed Fish Serv Nigeria 1974: 14-15 (1975)

Observations on the genus Astarte
, American Journal of Conchology, V 46 (1869)

Observations on the genus Astarte, with a list of the known recent species
, Jnch: 232 (1881)

Observations on the genus Barrettia, Woodward, with descriptions of two new species
, Bulletin of the American Museum, ix(Pt. 1: 233-246 (1898)

Observations on the genus Bethylus Latr. ( = Perisemus Foerst.) (Hymenoptera, Bethylidae)
, Transactions of the Entomological Society of the South of England Southampton 8: 35-40 (1932)

Observations on the genus Bins
, Report Cotswold Herpet Symp, 37-41 (1977)

Observations on the genus Bosmina in New Zealand
, Hydrobiologia 53: 309-313 (1953)

Observations on the genus Brunettia Annandale (Dipt., Psychodidae), with descriptions of two new species
, Proceedings of the Royal Entomological Society of London (B): 20: 142-146 (1954)

Observations on the genus Dorylus, and upon a new genus of Apidoe
, Unknown (1865)

Observations on the genus Euphaedra Hubn. (Lep. Rhop.) in Sierra Leone
, Entomologist 82: 193-200 (1949)

Observations on the genus Genimen Bolivar (Insecta, Acrididae), with description of a new genus and species
, Spolia Zeylanica 18: 193-198 (1934)

Observations on the genus Grassicauda
, Unknown (1920)

Observations on the genus Heniochophilus (Copepoda) with a description of the type species
, JBiol. Assoc. India: 1270-276 (1967)

Observations on the genus Hylacola (Ground-Wrens)
, Emu Melbourne, 17 87-94: 113 (1917)

Observations on the genus Io
, American Journal of Conchology, I 41-44 (1865)

Observations on the genus Lysorophus, Cope
, Annals and Magazine of Natural History Series 9: 2 232-240 (1918)

Observations on the genus Margaritana with a new sub-genus
, Nautilus Boston Mass 35: 42-44 (1922)

Observations on the genus Ophiaster Gran (Coccolithineae)
, Sarsia 29: 183-192 (1967)

Observations on the genus Ornithoica (Diptera: Hippoboscidae)
, Canadian Entomologist 61: 280-285 (1929)

Observations on the genus Petroica with notes on nidification
, Emu Melbourne 32: 39-41 (1932)

Observations on the genus Polymorphiles
, GeolLondon 6: 442-447 (1917)

Observations on the genus Promicroceras
, Geol Mag 64(752): 76-80 (1927)

Observations on the genus Pterygosoma (Acari: Pterygosomidae)
, Parasitology 52: 261-295 (1962)

Observations on the genus Rastrites and some allied species of Monograptus
, Lund Univr. N.F. 2: 1-22 (1907)

Observations on the genus Ratania (Copepoda) with a description of the type species
, Bulletin of the Central Research Institute Trivandrum, 8C 141-146 (1961)

Observations on the genus Reticulitermes Holmgren
, Pan Pacific Ent 8(4): 178-180 (1932)

Observations on the genus Schizothaerus
, Nautilus 66(1): 19-26 (1952)

Observations on the genus Sphenia, with descriptions of new species
, Annals of Natural History, XII 277-281 (1893)

Observations on the genus Xenanthura (Isopoda, Anthuridae)
, Crustaceana 5: 263-270 (1963)

Observations on the genus of fossil fishes called by Professor Cope Portheus, by Dr Leidy Xiphactinus
, Zool Bull, II 25-54 (1898)

Observations on the genus, Sterrhurus Looss, with a description of Sterrhurus branchialis sp. nov. (Trematoda, Hemiuridae)
, Biological Bulletin Wood's Hole 67: 534-543 (1934)

Observations on the geographic races of the Tinamou Crypturellus noctivagus in Venezuela and Colombia
, Boletin de la Sociedad Venezolana de Ciencias Naturales 1377: 115-119 (1951)

Observations on the geographic variation in Ambystoma cingulatum
, Copeia, 342-346 (1965)

Observations on the geographical and ethnological distribution of hookworms
, Parasitology Cambridge, 12 217-233 (1920)

Observations on the geographical distribution of digenetic trematodes of marine fishes
, Journal of Parasitology Suppl 276: 33-34 (1941)

Observations on the geographical distribution of the genus Voluta
, Proceedings Soc: 50-54 (1864)

Observations on the germ cell ultrastructure of male diploid and tetraploid Odontophrynus americanus (Amphibia: Anura)
, Memorias Inst Butantan 39: 135-148 (1976)

Observations on the germ cells of Hydra
, Biological Bulletin Wood's Hole, 16 205-209 (1909)

Observations on the giant Amoeba carolincnsis (Wilson, 1900)
, Biological Bulletin Wood's Hole 90: 8-18 (1946)

Observations on the giant cells of the chinchilla placenta
, Trans Illinois State Acad Sci 54(1/2): 34-40 (1961)

Observations on the giant softshell turtle, Pelochelys cantorii, with description of a new species
, Hamadryad 27(1): 99-107 (2002)

Observations on the gill development in frogs
, Annls Embryol: 3-13 (1969)

Observations on the glacial phenomena of Labrador and Maine, with a view of the recent invertebrate fauna of Labrador
, Memn Soc. of Nat. Hist: 210-303 (1867)

Observations on the glochidia of Lampsilis radiata (Gmelin) infesting yellow perch, Perca flavescens (Mitchill) in the Bay of Quinte, Lake Ontario
, Canol: 705-712 (1969)

Observations on the glycogen content of certain invertebrates and fishes
, University of Toronto Studies 33: 317-330 (1920)

Observations on the gradients of Planaria blastemas
, Turtox News 35: 218-219 (1957)

Observations on the granules of Actinosphaerium eichhorni Ehrb
, Journal of Protozoology, 4: 18 (1957)

Observations on the grasshopper warbler (Locmtella naevia) from the commune of Pielisjarvi, eastern Finland
, Ornis Fennica 44: 28 (1967)

Observations on the gray whale
, Journal of Mammalogy 35: 444-445 (1954)

Observations on the greater kudu Tragelaphus strepsiceros Pallas from a tsetse control hunting scheme in Northern Rhodesia
, East African Wildlife Journal 3: 27-37 (1965)

Observations on the green turtle, Hoskyn Island
, Queensland Naturalist 2046: 116-117 (1972)

Observations on the gregarine Rotundula gammari (Diesing, 1859), Goodrich, 1949
, Parasitology 54: 195-199 (1964)

Observations on the grey plover at Altona, Victoria
, Australian Bird Watcher 57: 277 (1975)

Observations on the grey seal (Halichoerus grypus) at Lundy
, Report Lundy Fld Soc 5: 57-59. (1974)

Observations on the grey seal (Halichoerus grypus) at North Rona in 1960
, Proceedings of the Zoological Society of London 139: 249-260 (1962)

Observations on the grey seal (Halichoerus grypus) populations of Lundy. Report
, Lundy Fld Soc, 24,1973: 41-42 (1974)

Observations on the grey seal at St. Kilda in winter
, Proceedings of the Zoological Society of London 133: 487-490 (1960)

Observations on the gross and microscopic anatomy of the Sloths (Bradypus griseus Gray and Gholoepus hofjmanni Peters.)
, J. Philadelphia: 317-397 (1928)

Observations on the growth and development of Japanese monkeys
, Primates 42: 90-91 (1963)

Observations on the growth and development of the chorioallantoic and formation of the cotyledon of the placenta in elk
, Doklady Akademii Nauk SSSR (Transl) Biol Sci 140: 818-821 (1962)

Observations on the growth and distribution of certain lotic Coleoptera in Ireland
, Irish Naturalists' Journal 178: 269-272 (1973)

Observations on the growth and habits of the gastropod mollusc, Pyrozus palwtris (Linne), in the Andamans
, Rec IndCalcutta: 206 (1938)

Observations on the growth and habits of the stick insect, Carausius morosus Br.; intended as a contribution towards a knowledge of variation in an organism which repro-duces itself by the parthenogenctic method
, Transactions of the Entomological Society of London, 1916 345-330 (1917)

Observations on the growth and regeneration of the compound eye of Periplaneta americana
, ASB Bull.: 17: 49 (1970)

Observations on the growth and trematode infections of Peringia ulvae (Pennant) 1777 in a pool in the Tamar saltings, Plymouth
, Parasitology Cambridge 33: 406-415 (1941)

Observations on the growth of Cypraea spadicea
, Veliger 8(1): 14-15 (1965)

Observations on the growth of Entamoeba histolytica in media containing sulfathiazole
, U S Naval Med Bull 41(3): 714-716 (1943)

Observations on the growth of Ephemeroptera in fluctuating and constant temperature conditions
, Proceedings of the Royal Irish Academy. Section B: Biological Geological and Chemical Science 73(10): 133-149 (1973)

Observations on the growth of Epinephelus malabaricus (Bloch and Schneider) in the onshore recirculating sea water system
, Journal of the Marine Biological Association of India 42(1-2): 190-193 (2000)

Observations on the growth of Tilapia mossambica fed on artificial diets
, Fishery Res Zambia: 379-396 (1971)

Observations on the growth of a Polar Bear born in the Prague Zoo
, Proceedings Soc. London: 606 (1947)

Observations on the growth of perch (Perca fluviatilis L.) over twenty-two years with special reference to the effects of temperature and changes in population density
, J Ecol: 287-334 (1958)

Observations on the growth of the Japanese badger, Meles meles anakuma, in captivity
, Journal mammalJapan: 181-184 (1975)

Observations on the growth of the larva of the puss moth, Dicranura vinula F
, Transactions of the Entomological Society of London, 251-257 (1923)

Observations on the growth of the oyster Crassostrea gigas Thunberg, in Deep Bay, Hong Kong. Hong Kong Fish
, Hong Kong Fish. Bull., 4: 45-53 (1975)

Observations on the growth of the sculptured shrimp Sclerocrangon boreas (Decapoda: Caridea)
, Journal of Crustacean Biology 26(1): 55-62 (2006)

Observations on the Growth of the Suprarenal Cortex
, Journal of Anatomy 64(Pt 4): 479-502 (1930)

Observations on the growth of turbot larvae Scophthalmus maximus L. reared in the laboratory
, Aquaculture 22: 149-155 (1973)

Observations on the growth of young bangos, Chanos chanos (Forskal) on two types of pelleted food
, Philippine Journal of Science 1034: 199-206 (1974)

Observations on the growth of young spurwing geese Plectropterus gambensh (L.)
, Ostrich 35: 64-65 (1964)

Observations on the growth rate in Martesia striata (Linn.), the wood-boring pholads in the Cochin Harbour region on the south-west coast of India
, Proceedings Indian Acad Sci (B): 791: 16-28 (1974)

Observations on the growth rate of Catla catla (Hamilton) based on the recovery of one tagged specimen from Kulgarhi Reservior, Madhya Pradesh
, Journal Inland Fish Soc India, 6: 88 (1975)

Observations on the growth rate of Coregonus lavaretus pallasi n. exilis (Pravdin) in Syamozero Lake during the first year of its life
, Izv. vses. nauchno-issled. Inst. ozern. rechn. ryb. Khoz.: 62: 121-124 (1967)

Observations on the growth rate of Natrix natrix L. hatched and reared under artificial conditions
, Annales Universitatis Mariae Curie-Sklodowska, 14C 233-262 (1961)

Observations on the growth rate of the foot in the Mound Birds of the genus Megapodius
, ProcNat. Mus: 1-4 (1931 )

Observations on the growth rate of the immature Bermuda spiny lobster, Panulirus argus
, Ecology 38(3): 526-529 (1957)

Observations on the growth rate of the spiny lobster
, California Fish and Game 46(2): 177-181 (1960)

Observations on the gut of the Osteoglossomorpha
, Copeia 2: 325-329 (1972)

Observations on the gut wall amphioxus (Branchiostoma lanceolatum)
, Current Science 37: 587-589 (1968)

Observations on the habit and functional anatomy of Cyprina islandica (L.)
, Proceedings of the Malacological Society of London 36: 149-162 (1964)

Observations on the habitat and food of the Queen snake, Natrix septemvittata, at London, Ontario
, Canadian Field-Naturalist 69(4): 167-168 (1956)

Observations on the habitat and territory of the Chaffinch, Fringilla c. coelebs L., in Swedish Lapland
, Arkiv for Zoologi 9: 499-505 (1956)

Observations on the habitat distribution of the naiad Cumberlandia monodonta (Say, 1829)
, Report American Malacological Union Pacific Division, 29-30 (1966)

Observations on the habitat preferences and population dynamics of the black-faced impala Aepfceros petersi Bocage, 1875, in South West Africa
, Madoqua (Ser; No.3,: 55-65 (1971)

Observations on the habitat use, home range, and movement of Bitis gabonica and B. nasicornis (Serpentes: Viperidae) in southwestern Cameroon, Africa
, Herpetological Natural History 101: 99-104 (2006)

Observations on the habitat, locality and range of the rare Conus aurantius Hwass 1792
, Hawaiian Shell News 15(12): 1 & 8 (1967)

Observations on the habitats and food of the badger in North and West Essex
, Starfish 13: 18-20 (1962)

Observations on the habits and Natural History of Amphithoe longimana Smith
, Biol Bull, II 165-193 (1901)

Observations on the habits and control of Culex pipiens fatigans in Guyana
, Bulletin of the World Health Organization 37(2): 317-322 (1967)

Observations on the habits and distribution of certain fishes taken on the coast of North Carolina
, New York Bulletin of the American Museum of Natural History, 28 337-348 (1910)

Observations on the habits and life history of a ohigger mito, Eutrombicula batatas (Acarina : Trombiculinae)
, Annals of the Entomological Society of America 391: 101-118 (1946)

Observations on the habits and life-history of Patinana (Lagis) loreni
, Mgr Proceedings Liverpool Biol Society 42: 25-60 (1928)

Observations on the habits and life-history of the Chinese newt, Cynops chinensis Gray
, Copeia 3: 213-219 (1951)

Observations on the habits and natural surroundings of insects made during the Skeat expedition to the Malay peninsula, 1899-1900
, Proceedings of the Zoological Society of London, 837-869 (1900)

Observations on the habits and oviposition of Tettigonia viridissima L. (Orth., Tetti-goniidae)
, Entomologist's Monthly Magazine 83: 281-283 (1947)

Observations on the habits and parthenogenesis of Methoca ichneumonides Latr. (Hymenoptera, Vespoidea)
, Transactions of the Entomological Society of London 1925: 591-597 (1926)

Observations on the habits and post-embryonic development of a parasitic Branchiuran Argulus puthenveliensis Ramakrishna
, Journal of the Marine Biological Association of India, 31-2: 75-86 (1962)

Observations on the habits and prey of Eucerceris ruficeps Scullen (Hymenoptera, Sphecidae)
, Pan-Pacific Entomologist 30: 11-14 (1954)

Observations on the habits and prey of the fossorial wasp, Mellinus arvensis L
, Trans Ent Soc So England 7(2): 68-80 (1932)

Observations on the habits and the morphology of the sea snake Laticauda calubrina (Schneider) in Fiji
, Canadian Journal of Zoology 5510: 1612-1619 (1977)

Observations on the habits in captivity of two species of wild cats, the leopard cat and the flat-headed cat
, Malayan Nature Journal 15: 48-51 (1961)

Observations on the habits of Catocala titania Dodge
, Entomological News 27: 67-69 (1916)

Observations on the habits of Cochlitoma zebra, var. fulgurata (Pfeiffer), and Cochlitima zebra var obesa (Pfeiffer), in confinement
, Proceedings of the Zoological Society of London, 379-387 (1921)

Observations on the habits of Cuckoos
, Emu Melbourne 30: 17-21 (1930)

Observations on the habits of Echidna
, Tr Soc Glasgow 2(iv): 321-323 (1897)

Observations on the habits of Jackdaws (Cotvus monedula) at the wintering and roosting quarters
, Var Fagelvarld 21: 81-95 (1962)

Observations on the habits of Marine Animals. I. The Octopus in captivity
, Je Zool: 9-11 (1893)

Observations on the habits of Oxybelus sericeum Robertson (Hymenoptera: Sphecidae)
, Pan-Pacific Entomologist 36: 115-118 (1960)

Observations on the habits of Papilio helenus L. var. nicconicolens Butl. in the adult stage
, Konchu Sekai (Insect World) Gifu 27: 163-165, 193-196, 298-302 (1923)

Observations on the habits of Sphex procera in Manitoba
, Canadian Field-Naturalist 38: 121-123 (1924)

Observations on the habits of Stomatopods
, Proceedings of the Indian Science Congress, 353: 193 (1949)

Observations on the habits of Stylops pacifica Bohart (Coleoptera: Stylopidae)
, Publ Univ Calif Ent Berkeley 11: 395-430 (1957)

Observations on the habits of a female Solifuge. Solpuga caffra Pocock
, Annals of the Transvaal Museum 212: 197-200 (1949)

Observations on the habits of an introduced pine sawfly Diprion simile Htg
, Canadian Ent 67(7): 137-140 (1935)

Observations on the habits of birds at Lake Burford, New Mexico
, Auk Lancaster Pa, 37 221-247: 393-412 (1920)

Observations on the habits of certain Syrphids (Diptera)
, Entomological News 63: 39-43 (1952)

Observations on the habits of larvae and adults of Callidium texanum Schaeffer (Coleoptera: Cerambycidae)
, Journal of the Kansas Entomological Society 35: 321-323 (1962)

Observations on the habits of nest care in the red-winged blackbird
, Bull Orn. Soc: 24-27 (1968)

Observations on the habits of some breeding birds of Chatham County, Georgia
, Wilson Bulletin Oberlin, 32 133-139 (1920)

Observations on the habits of some western Longicorn beetles (Coleoptera, Cerambycidae)
, Pan-Pacific Entomologist 12: 199-200 (1936)

Observations on the habits of the Conchostracan Caenestheria sp. recorded from Tam-baram (S. India)
, Journal of the Bombay Natural History Society, 472: 396 (1947)

Observations on the habits of the Finback and Humpback Whales of the Eastern North Pacific New York N.Y
, Bulletin of the American Museum of Natural History, 26 213-226 (1909)

Observations on the habits of the Horned Lizard Phrynosoma m'callii
, Copeia Ann Arbor, 176-180 (1949)

Observations on the habits of the Onuphidoe (Polychoeta) and on the internal structures with which they fortify their homes
, Unknown (1903)

Observations on the habits of the Prairie Falcon
, Condor Berkeley 25: 90-97 (1923)

Observations on the habits of the Slow Loris (Loris lydekkerianus)
, Journal of the Bombay Natural History Society 32: 206-209 (1927)

Observations on the habits of the Spine-tailed Log-runner.
, Emu Melbourne 34: 177-180 (1935)

Observations on the habits of the Striped Skunk (Mephitis mesomelas varians)
, Journal of Mammalogy 5: 180-189 (1924)

Observations on the habits of the Whip-poor-will (Antrostomus v. vociferus)
, Auk Lan caster Pa0: 534-536 (1923)

Observations on the habits of the White-winged Dove
, Condor Hollywood, 22 140-146 (1920)

Observations on the habits of the crustacean Emerita analoga
, Smithsonian Institution Miscellaneous Collection 59(7): 1-13 (1912)

Observations on the habits of the large Central Australian Monitor (Varanus giganteus) with a note on the fat bodies of this species
, Transactions and Proceedings of the Royal Society of South Australia Adelaide, 36 26-33 (1912)

Observations on the habits of the ornate box turtle, Terrapene ornata (Agassiz)
, Nat Misc. Chicago No: 1-4 (1950)

Observations on the habits of the proboscis monkey, Nasalis larvatus (Wurms), made in the Brunei Bay area, Borneo
, Zoologica New York 49: 183-196 (1964)

Observations on the habits of the salamander, Desmognathus ocoee Nicholls
, Journal of the Tennessee Academy of Science 282: 118-120 (1953)

Observations on the habits of the whalesucker (Remilegia australis)
, Norsk Hvalfangsttidende Sandefjord 50: 181-189 (1961)

Observations on the habits of two Cicindelidae
, Proceedings of the Entomological Society of Washington, V 108-110 (1902)

Observations on the habits of two spider mimics of the red ant, Occophylla smaragdi.ia (Fabr.)
, Journal of the Bombay Natural History Society 52: 249-263 (1954)

Observations on the habits of two spiders mimicking the red ant
, Procn Sci. Congr: 93-94 (1944)

Observations on the habits, ecology and life cycle of Oncomelania nosophera, the molluscan intermediate host of Schistosoma in Japan
, American Journal of Hygiene 54: 402-415 (1951)

Observations on the habits, eggs and young of Hyla fuhrmanni Peracca
, Michigan Occ Pap Zool Mus, 14 1-4 (1915)

Observations on the haematology of fishes and birds
, Experimental Medicine and Surgery 7(4): 318 (1949)

Observations on the haematology of several races of Black-tailed deer (Odocoileus hemionus)
, Canadian Journal of Zoology 47: 1021-1024 (1969)

Observations on the haemocytes during the metamorphosis of Calliphora erythrocephala (Meig.)
, Arkiv for Zoologi 6: 203-211 (1954)

Observations on the haemolymph and venom of scorpions
, Zoologicheskii Zhurnal 38: 1018-1027 (1959)

Observations on the hatching of Stenopsocus cruciatus
, Scottish Naturalist, 61-65 (1916)

Observations on the hatching of eggs of Chirocephalus diaphanus Prevost
, Proceedings Zool Society London 123(1): 95-109 (1953)

Observations on the hatching of the field slug, Agriolimax agrestis Linn
, Scottish Naturalist 149: 131-134 (1924)

Observations on the heart beat in the Chironomus larva
, Sci Rept Tohoku Imp Univ Biol 3(1): 55-69 (1927)

Observations on the heart in the family Trionychidae
, Bulletin Brit Mus Nat Hist Zool 8(2): 73-107 (1961)

Observations on the heart of the various castes of the termite Odontotermes assmuthi
, Indian Zool: 57-65 (1971)

Observations on the hedge sparrow, Prunella modularis (L.) in the forest-district Rogow (Forest Research Station of the Warsaw High School of Agriculture)
, Przeglad Zoologiczny 9: 286-289 (1965)

Observations on the helminths and ectoparasites of the Cotton Rat, Sig-modon hispidus hispidus Say and Ord, in Georgia and North Carolina
, Journal of the Elisha Mitchell Scientific Society 64: 183-191 (1948)

Observations on the heptocystis of the Whitecheeked gibbon (Hylobates concolor)
, J. Parasit.: 56: 444-446 (1970)

Observations on the heredity of the histologic properties of the thyroid gland in Rhode Island and Leghorn hens and their half-breeds (F3)
, Comunicarile de Zoologie Bucuresti 4: 27-31 (1967)

Observations on the herpetofauna of Turkey in 1968-1973
, British Jt: 575-584 (1976)

Observations on the herpetofauna of the Mexican state of Nayarit
, Herpetologica 11(3): 177-181 (1955)

Observations on the hibernation lair of the Yezo Brown Bear
, Transactions of the Sapporo Natural History Society 12: 175-179 (1932)

Observations on the hibernation of Ground Squirrels (Citellis columbianus)
, Journal of Agricultural Research Washington 31: 761-769 (1925)

Observations on the hibernation of some scale insects in the climate of the Valle Padana
, Rivista di Biologia 60: 513-520 (1967)

Observations on the high proportion of polymorphic trypanosome infections found in the salivary glands of Glossina brevipalpis near Amani, Tanganyika Territory, with a note on the appearance of the salivary glands
, Annals of Tropical Medicine and Parasitology 36: 170-176 (1942)

Observations on the hill toppinng behavior of Clitellaria obtusa (James) (Diptera: Stratiomyidae)
, Hana Abu 1(8): 58 (2004)

Observations on the histochemical and chemical distribution of glycogen in the chick heart
, Anatomical Record 166(2): 161-166 (1970)

Observations on the histochemistry of the gonads and adrenal cortical cells in Xenopus laevis Daud. during nest and after treatment with chorionic gonadotropin
, Folia Biologica Krakow 2: 87-98 (1954)

Observations on the histogenesis of protoplasmic processes and of collaterals terminating in end bulbs, of the neurones of peripheral sensory ganglia
, Anatomical Record Philadelphia, 7 331-347 (1913)

Observations on the histological configuration of the pharynx in the planarian, Dugesia gonocephala
, Report Noto Marine Lab Faculty of Science University Kanazawa 4: 121-127 (1964)

Observations on the Histological Structure of the Supraorbital (Nasal) Glands from Saline-Fed and Freshwater-Fed Domestic Ducks (Anas Platyrhynchus)
, Journal of Anatomy 98: 571-578 (1964)

Observations on the histology of the alimentary tract of Littorina irrorata (Say)
, Journal of the Tennessee Academy of Science 26: 85-88 (1951)

Observations on the histopathology of red body disease in Macrobrachium nipponense
, Journal of Fisheries of China 28(4): 438-442 (2004)

Observations on the histophysiological study on the functional renal thyroid gland of a freshwater teleost, Puntius ticto
, Comparative Physiol Ecol 22: 67-69 (1977)

Observations on the history of penguins. Leeper, G. W., Editor. The Evolution of Living Organisms
, Victoria Melb, 408-416 (1962)

Observations on the history, habitat, and range of Conus columba Hwass (in Bruguiere) 1792
, Hawaiian Shell News 16(10): 3, 7 (1968)

Observations on the home range and activity of the Sciliy shrew
, Mammalia 29: 507-516 (1965)

Observations on the home range of a Yellow-nosed cotton rat, Sigmodon ochrognathus
, SWest. Nat.: 14: 353-355 (1970)

Observations on the home range of one group of mountain gorillas (Gorilla gorilla beringei)
, Animal Behav 223: 568-581 (1974)

Observations on the home range of the desert woodrat, Neotoma lepida intermedia
, Journal of Mammalogy 562: 518-519 (1975)

Observations on the homing behavior of the Grey Squirrel (Sciurus carolinensis)
, Journal of Wildlife Management 5: 458-400 (1941)

Observations on the homologies of the copulatory apparatus in male Coleoptera
, Ann Ent Society America 45(4): 613-617 (1952)

Observations on the honeybees, Apis mellifera L., existing in the New Valley of Egypt. Agricultural Res
, Rev 521: 125-135 (1974)

Observations on the hooklets of Cysticercus cellulosae in Man
, Annals of Tropical Medicine and Parasitology 2: 391-395 (1909)

Observations on the hormonal diagnosis of pregnancy in the Mare
, Natural and Applied Science Bulletin Manila 7: 223-226 (1939)

Observations on the host hemoglobin during Plasmodium lophurae infections in chicks
, Jour Parasitol 46(6): 765-767 (1960)

Observations on the host-parasite relations of Thersitina gasterostei (Crustacea: Copepoda)
, J. Zool., Lond.: 162: 371-381 (1970)

Observations on the host-plants of cerambycid beetles
, Gensei 30: 9-22 (1976)

Observations on the host-symbiont relationships of Lagenophrys lunatus Imamura
, Journal Protozool 205: 558-561 (1973)

Observations on the hovering and mating of Tabanus bishoppi Stone (Diptera, Tabanidae)
, Annals of the Entomological Society of America 52: 183-190 (1959)

Observations on the hummingbirds Orthorhynchus cristatus and Eulampis jugularis of Martinique (West Indies)
, Gerfaut 66(1-2): 129-132 (1976)

Observations on the hunting and mating behaviour of two species of scorpion flies (Bittacidae: Mecoptera)
, Australian Journal of Zoology 14: 371-382 (1966)

Observations on the hydrology and marine organisms of the tidal Colorado River and adjacent waters, Texas, February-June 1962
, Contributions mar Sci 17: 99-110 (1973)

Observations on the hypophyseal portal circulation in Gegenophis carnosus
, Proceedings of the Indian Science Congress, 483: 411 (1959)

Observations on the hypothalamoneurohypophyseal system in the starved Garden lizard Calotes versicolor
, Sciult: 606-608 (1970)

Observations on the identity of Trichodorus teres Hooper, 1962 and T.flevensis Kuiper & Loof, 1962
, Nematologica, 9: 646 (1963)

Observations on the identity of the Corixidae in the Dale collection of British Hemiptera-Heteroptera
, EntMag., London: 126-127 (1943)

Observations on the identity of the wheat midge
, Journal of Economic Entomology, 5 286-289 (1912)

Observations on the immature stages of Cordilura (Achaetella) deceptiva and C. (A.) varipes
, Annals of the Entomological Society of America 62: 775-785 (1969)

Observations on the immature stages of Gimnomera cerea and G. incisurata (Diptera: Anthomyiidae, Scatophaginae)
, Canadian Entomologist 100: 74-83 (1968)

Observations on the immature stages of Protodictya hondurana (Diptera: Sciomyzidae)
, Bulletin of the Brooklyn Entomological Society 56: 46-56 (1961)

Observations on the immunity to Trypanosoma equiperdum induced by treatment with oxophenarsine
, Journal of Parasitology Suppl 41: 15-16 (1955)

Observations on the impacts of forest harvesting
, Unknown (2008)

Observations on the impalements made by shrikes
, Tori 25100: 94-100 (1976)

Observations on the in vitro culture of Leishmania braziliensis
, Journal Parasit 636: 1118-1119 (1977)

Observations on the incidence and seasonal abundance of white grub Lachnosterna consanguinea Blanch. infecting sesamum in Rajasthan
, Annals Arid Zone 11(3-4): 219-224 (1972)

Observations on the incidence and seasonal variation of some helminth eggs and larvae in sheep in lraq
, Bulletin endem: 99-107 (1971)

Observations on the incidence of Otodectes cynotis (Hering) on dogs and cats in the London area
, Veterinary Record 67: 716-717 (1955)

Observations on the incidence of encysted larvae of Paragonimus miyazakii Kamo et al., 1961 in Potamon dehaani in Rokurashi, Iwakumi City, Yamaguchi Prefecture
, Japanese Journal of Parasitology 13: 204-214 (1964)

Observations on the incidence of encysted larvae, of Paragonimus miyazakii Kamo et al. 1961 in Potamon dehaani in Rokuroshi, Iwakuni City, Yamaguchi Prefecture
, Japanese Journal of Parasitology 13: 204-214 (1964)

Observations on the incidence of following of visual and auditory stimuli in naive mallard ducklings Anas platyrhynchos)
, Behaviour: 1-15 (1967)

Observations on the incidence of pod borers (Lepidopterous) of Dolichos Lab-Lab (Avare) and the results of the preliminary insecticidal trials to control them
, Proceedings All-India Congr Zool, 1962(2): 351-354 (1966)

Observations on the incidence of some nematode parasites of the common rabbit, Oryctolagus cuniculus
, Parasitology 32(1): 67-77 (1940)

Observations on the incidence of ticks on Kenya mammals
, Entomological News 59(9): 235-242 (1948)

Observations on the increase in size at moulting in the lobster (Homarus vulgaris) M.-Edw.)
, Journal of the Marine Biological Association of the United Kingdom 37: 603-606 (1958)

Observations on the incubation and care of the young in the Jaca na
, Condor Berkeley 33: 32-33 (1931)

Observations on the incubation period in cases of induced malaria
, Journal of Tropical Medicine and Hygiene 42(21): 325-328 (1939)

Observations on the induction of ovulation in Microtus montanus
, Journal of Mammalogy 53(1): 210-212 (1972)

Observations on the infection by protozoa from the genus Cryptobia (Trypanoplasma) in the blood-vascular system of grasscarp (Ctenopharyngodon idella Val. ) bred in carp ponds. Roczn
, Unknown (1971)

Observations on the infection of bolinid snails with Schistosoma mattheei. 2. The mechanism of resistance to infection
, Parasitology 62: 161-170 (1971)

Observations on the infection of young gulls by mallophaga
, Ardea 55: 112-114 (1967)

Observations on the infectiousness of gametocytes in hyperendemic malaria
, Transactions of the Royal Society of Tropical Medicine and Hygiene 47(2): 160-165 (1953)

Observations on the infectivity of tissues of Macaca mulatta during the incubation period following exposure to infection with sporozoites of Plasmodium cynomolgi, Indian
, Journal Malariol 3: 211-220 (1949)

Observations on the inflammatory response within the dermis of a white bass, Morone chrysops (Rafinesque), infected with Lernaea cruciata (Copepoda: Caligidea)
, Journal Fish Biol 51: 21-23 (1973)

Observations on the influence of atmospheric temperature and humidity on the infectivity of Anopheles culicifacies Giles
, Jour Malaria Inst India 5(3): 375-388 (1944)

Observations on the influence of food supply and temperature on the feeding and growth of the larvae of Ostrea edulis L
, Fishery Investigations London 2: 241: 1-45 (1966)

Observations on the influence of photoperiod on egg diapause in Aedes albopictus Skuse
, Acta Entomologica Sinica 15: 75-77 (1966)

Observations on the influence of salt and other agents in modifying the larval development of the Hookworms, Ankylostoma duodenale and Necator americanus
, Parasitology Cambridge, 9 155-189 (1917)

Observations on the influence of social displays on ovarian development in captive mallards Anas platyrhynchos
, Ibis 114(2): 256-257 (1972)

Observations on the influence of stock density and feeding of carp fingerling upon the course of sanguinicolosis
, Acta Hydrobiologica Krakow 11: 119-134 (1969)

Observations on the influence of the venom of Loxoscelis rufescens (Sicariidae, Araneina) (Dufour 1820) on white mice
, Verhandlungen XI Internationaler Kongress fuer Entomologie Wien 1960: 2(vii-xiv): 499-501 (1962)

Observations on the influences of codend mesh size on bottom trawl catches in Lake Victoria, with emphasis on the Haplochromis population
, African J trop Hydrobiol Fish 21: 1-19 (1972)

Observations on the inheritance of sex in Sciara ocellaris (Diptera)
, Ohio Journal of Science 47(3): 89-102 (1947)

Observations on the initial movements of the food vacuoles of Paramecium multimicronucleata Powers and Mitchell with comments on conditions in other species of the Genus
, Archiv fuer Protistenkunde Jena 88: 76-84 (1936)

Observations on the innervation of the integument of amphioxus, Branchiostoma lanceolatum
, Quart Jour Microsc Sci 99(3): 421-440 (1958)

Observations on the insect fauna of birds' nests
, Js ent. Soc, Manhattan: 11-18. (1953)

Observations on the insect fauna of permanent pasture in Cheshire
, Annals of Applied Biology Cambridge, 7 141-155 (1920)

Observations on the insect food of the coati
, Proceedings of the Entomological Society of London 5: 69-75 (1931)

Observations on the insect gall. l. Observations on the insect gall of Lycium chinense Mill
, Collecting Breed: 166-168 (1973)

Observations on the insect parasites of some Coccidae. i. On. Aphelinus mytilaspidis Le Baron, a. chalcid parasite of the messel scale: (Lepidosaphes ulmi L.)
, Quarterly Journal of Microscopical Science, 61 217-274 (1916)

Observations on the insect trapping habit of the composite Helichrysum Cooperi Harv
, Jour Ent Soc S Africa 14(2): 133-135 (1951)

Observations on the insects of Caloundra. Report of the Easter excursion
, Qd Brisbane: 78-80 (1933)

Observations on the insects of grasses and their relation to cultivated crops
, Annals of Applied Biology Cambridge 8: 170-184 (1921)

Observations on the insects pollinating Hedysarum coronarium L. in Sardinia (Italy)
, Insect Social Life 3: 161-166 (2000)

Observations on the inshore population of Dungeness crab in Bodega Bay
, California Fish and Game 621: 89-92 (1976)

Observations on the integument of the water mite Arrenurus major (Acari: Parasitengona)
, Journal Morph 1384: 433-449 (1972)

Observations on the interaction between the two-spotted spider mite (Tetranychus urticae Koch) and its host plants, with notes on new taxonomic characteristics of spider mite
, Dissertation Abstracts International C, European Abstracts 37(2): 280 (1977)

Observations on the internal anatomy of the carpenter ant.
, Journal of the New York Entomological Society 49: 294-295 (1941)

Observations on the internal structure of the aorta in East African mammals, with particular reference to the klipspringer, gerenuk and hippopotamus
, Zeitschrift fuer Saugietierkunde 33: 27-42 (1968 )

Observations on the interrelationships among ants, aphids and aphid predators
, Michigan Ent 1: 169-173 (1967)

Observations on the interstitial cells of the ovary. A histological study in two species of Indian Microchiroptera
, Procndia Congr. Zool: 122-126 (1966)

Observations on the intestinal Protozon of three Egyptian lizards, with a note on a cell-invading Fungus
, Parasitology Cambridge, 12 350-365 (1920)

Observations on the intestinal protozoa of young pigs and attempts to produce infection with a human strain of E. histolytica
, Journal of Parasitology Urbana 20: 133 (1933)

Observations on the introduction of two servals at Drusillas Park
, IZN International Zoo News 54(2): 85-89 No 355 (2007)

Observations on the invertebrate coenoses of cypress trees in cultivation (Cupressaceae)
, Entomologist's Monthly Magazine 141(1697-1699): 248 (2005)

Observations on the invertebrate fauna of the Kumaon Lakes
, Records of the Indian Museum 24: 11-17 (1922)

Observations on the iodinated proteins of the thyroid in methyl-thiouracil-treated crested newts (Triturus cristatus carnifex Latin). Atti Accad. Sci
, Torino 105: 423-426 (1971)

Observations on the iris colour of bearded tits
, Bird Study 13: 328-330 (1966)

Observations on the islets of Langerhans in Perdicula asiatica asiatica, Latham, (family: Phasianidae)
, Indian Biologist 1-2: 74-75 (1972)

Observations on the isolated gut of the mosquito
, Transactions of the Royal Society of Tropical Medicine and Hygiene 43(2): 225-230 (1949)

Observations on the isolated tubule of the dogfish rectal gland
, Bulletin Mt Desert Isl Biol Lab 15: 37-38 (1975)

Observations on the isopod Mesidotea entomon in the western Arctic Ocean
, Journal of the Fisheries Research Board of Canada 19: 489-196 (1962)

Observations on the jelly mass of the eggs of three molluscs, Succinea putris, Limnaea stagnalis, and Planorbis corneus with special reference to metachromasia
, Proceedings Akademie van Wetenschappen Amsterdam, 61C 590-594 (1958)

Observations on the jumping and escapement of white amur
, Progressive Fish Culturist(1): 15 (1974)

Observations on the juvenes of the char (Salvelinus alpinus L.) of Novaya zemlya in an aquarium
, Arctica Leningrad 2: 153-159 (1934)

Observations on the juvenile of Gallivula chloropus vestigialis Clancey. On some northern Scottish specimens of Erithacus rubi-cula (Linn.). Notes on some examples of Parus ater Linn, from northern Scotland exhibiting interesting diver-gent characters. P
, Ibis 89: 117-120 (1947)

Observations on the karyotype and maturation of the F, generation of Syringophyloidus minor (Acarina: Syringo phyloidae)
, Annals ent Soc Am 671: 136-137 (1974)

Observations on the kind of food taken up by Ergasilus sieboldi Nordmann
, Wiadomosci Parazytologiczne 10(4-5): 527-529 (1964)

Observations on the kinetics of haemolytic antibody response by localized hemolysis in gel over frozen sections of mouse spleen
, Proceedings of the Society for Experimental Biology and Medicine 126: 84-88 (1967)

Observations on the kinetoplast-mitochondrion and the cytostome of Bodo
, Experimental Cell Research 25: 87-93 (1961)

Observations on the labyrinth of certain animals
, Proceedings of the Royal Society London, B 78: 284-296 (1906)

Observations on the lake trout of Great Bear Lake
, Journal of the Fisheries Research Board of Canada 7: 176-189 (1947)

Observations on the lambing interval of the Cape bushbuck, Tragelaphus scriptus sylvaticus
, Zoologica afr 111: 221-222 (1976)

Observations on the lambing interval of the grey duiker, Sylvicapra grimmia grimmia
, Zoologica afr 121: 232-233 (1977)

Observations on the land crab, Cardisoma armatum, with especial regard to Sense Organs
, Proceedings of the Zoological Society of London, 361-363 (1922)

Observations on the land mollusca of the coasts bordering on the Bristol Channel
, Journal of Conchology Leeds 17: 57-60 (1923)

Observations on the land planarian Bipalium kewense Moseley in the Gulf coast
, Systematic Zoology 12: 36-37 (1963)

Observations on the larva and pupa of Uropteryx sambucaria L
, Proceedings of the Entomological Society of London, 1919 (xxxiv-xxxvi) (1920)

Observations on the larva and pupa of the caddisfly genus Hagenella (Trichoptera: Phrygancidae)
, Proceedings int Symp Trichoptera 2: 207-214 (1977)

Observations on the larva of Deilephila
, Entomologist's Monthly Magazine 5-8 (1865)

Observations on the larva of Hippotion celerio Linnaeus (Lepid., Sphingidae) in Tanzania
, Entomologist 100: 285-286 (1967)

Observations on the larvae and juveniles of the 'bhekti'. Lates calcarifer (Bloch) from the Hooghly-Matlan estuarine system
, Indian Journal of Fisheries 202: 372-379 (1973)

Observations on the larvae of Hippotion celerio L. (Lepid., Sphingidae) in Tanzania
, Entomologist 101: 50 (1968)

Observations on the larvae of some species of click beetles (Col., Elateridae) feeding on mushrooms
, Polskie Pismo Entomologiczne: 36(3-4): 341-345 (1966)

Observations on the larvae of the salamander Eurycea bislineata bislineata
, Herpetologica 11(3): 202-204 (1955)

Observations on the larval development of some Malagasy frogs, with notes on their ecology and biology (Anura: Dyscophinae. Scaphiophrynirae, Cophylinae)
, Beaufortia 24309: 7-26 (1975)

Observations on the larval habitat of Pocota personata (Harris) (Diptera, Syrphidae)
, Dipterists Digest Second Series 2005 6th February; 122: 147-148 (2006)

Observations on the larval habits of some Callidiini with special reference to Callidiellum cupressi (Van Dyke) (Coleoptera: Cerambycidae)
, Journal of the Kansas Entomological Society 37: 119-122 (1964)

Observations on the larval ingress of the milkfish, Chanos chanos (Forskal) into the Pulicat Lake
, Journal mar Ass. India: 249-257 (1972)

Observations on the larval period and female reproductive ecology of Desmognathus ochrophaeus (Amphibia: Plethodontidae) in western North Carolina
, American Midland Naturalist 892: 394-407 (1973)

Observations on the larval stages of Pharyngostomoides procyonis (Harkema 1942) (Trematoda: Diplostomidae)
, ASB Bull 11: 46-47 (1964)

Observations on the later embryology of the Squid, Loligo brevis Blainville
, Anatomical Record Philadelphia 81: 38 (1941)

Observations on the lateral-line sense organs of the Salamander Neurergus crocatus crocatus Cope (Amphibia: Urodela)
, Gegenbaurs Morphologisches Jahrbuch 123(4): 621-637 (1977)

Observations on the laying and hatching of octopus eggs in the Society's aquarium
, Proceedings of the Zoological Society of London 137: 311-315 (1961)

Observations on the length of dormancy of certain nematodes infesting plants
, Journal of Parasitology Urbana 20: 104-105 (1933)

Observations on the length of the intestine European bison Bison bonasus L
, Folia Morphologica Warzawa 9: 69-79 (1958)

Observations on the length-frequency distributions of the Indian whiting, Sillago sihama (Forskal), from the Karwar Waters
, Journal of the Zoological Society of India 12: 104-113 (1960)

Observations on the length-weight relationship of pearl oysters
, Jour Mar Biol Assoc India 4(2): 198-205 (1962)

Observations on the leucocytes of the earthworm
, Proceedings Pennsylvania Acad Science 13: 39-40 (1939)

Observations on the life cycle and habits of Bufo punctatus in Joshua Tree National Monument
, Herp(1): 36-38 (1977)

Observations on the life cycle and immature stages of Culicoides circumscriptus Kieff. (Diptera, Ceratopogonidae)
, ProcSoc. Edinburgh (B): 363-386 (1961)

Observations on the life cycle and regeneration on Oxynoe antillarum Morch,an ascoglossan opisthobranch from the Caribbean
, Bulletin Mar Sci 221: 67-74 (1972)

Observations on the life cycle of Alane oculatus (L.) (Coleoptera: Elateridae). (Abstract.)
, Journal of the Elisha Mitchell Scientific Society 64: 180 (1948)

Observations on the life cycle of Botryllus schlosseri (Pallas) (Ascidiacea) in the Venetian Lagoon
, Bollettino Zool 413: 225-251 (1974)

Observations on the life cycle of Capillaria hepatica (Bancroft, 1893) with a description of the adult
, Canadian Journal of Zoology 39: 167-182 (1961)

Observations on the life cycle of Ditylenchus dipsaci on onion seedlings
, Nematologica: 289-296 (1960)

Observations on the life cycle of Eimeria bilamellata Henry, 1932 in the Uinta ground squirrel Spermophilus armatus
, Journal of Protozoology 15(4): 732-740 (1968)

Observations on the life cycle of Eimeria bukidnonensis
, Journal of Protozoology (Suppl): 11: 17 (1964)

Observations on the life cycle of Heliconius hecale zuleika (Hewitson) in Costa Rica
, Pan-Pacific Entomologist 511: 76-85 (1975)

Observations on the life cycle of Ichthyophthirus, a ciliate parasitic on fish
, Northwest Science Cheney 9(3): 12-14 (1935)

Observations on the life cycle of Neoechinorhynchus emydis, an Acanthocephalan parasite of turtles
, Journal of Parasitology Suppl, 346: 25 (1948)

Observations on the life cycle of Nudacotyle novicia Barker,1916(Trematoda: Notocotylidae)
, Jit. Urbana: 13 (1939)

Observations on the life cycle of Parorchis acanthus Nicoll
, ASB Bull, 7: 33 (1960)

Observations on the life cycle of Phytomonas elmassiani (Migone) in East Africa
, Journal of Protozoology 9: 26-33 (1962)

Observations on the life cycle of Pisidium henslowanum (Sheppard) (Mollusca, Lamellibranchia)
, Russian Transl NLL: 1-6 (1971)

Observations on the life cycle of the common grain mite, Tyroyphagus dimidiatus (Hermann) by individual rearmgs
, Japanese Journal of Experimental Medicine 31: 333-339 (1961)

Observations on the life cycle of the foraminiferan Rosalina sp. of the far-eastern seas
, Vestnik Leningradskogo Gos Univ Ser Biol, (3): 19-27 (1971)

Observations on the life cycle of the parasitic mite Chorioptes bovis (Gerlach) using an in vitro technique
, Journal of Parasitology, 416: 34 (1955)

Observations on the life cycle of the tick Argas brevipes Banks 1908
, Journal of Parasitology 49: 527 (1963)

Observations on the life cycles of Diplotriaenoides translucidus and members of the genus Diplotriaena
, Canadian Journal of Zoology 35: 15-24 (1957)

Observations on the life cycles of Painted Turtles (genus Chrysemys)
, American Nat: 225-23 (1954)

Observations on the life histories and behaviour of some small rodents from Tanzania
, Zoologica afr 72: 419-449 (1972)

Observations on the life histories and the distribution of the Xanthidae (mud crabs) of Chesapeake Bay
, American Midland Naturalist 56: 138-162 (1956)

Observations on the life histories of Euparyphium murinum Tubangui, 1931, and Echinostoma revolutum (Froelich, 1802) (Trematoda). Philipp
, Journal Sci Manila 47: 497-511 (1932)

Observations on the life histories of Panama bats
, Jour Mammal 36(2): 232-235 (1955)

Observations on the life histories of four species of Epeorus in western Oregon. (Ephemeroptera: Heptageniidae)
, Pan-Pacific Entomologist 44: 129-137 (1968)

Observations on the life histories of recreationally important crawfishes in temporary habitats
, Proceedings of the Louisiana Academy of Sciences 38: 20-24 (1975)

Observations on the life histories of the peamouth (Mylocheihis caurinue) and the northern squawfish (Ptychocheilus oregonensis) in Montana
, Proceedings of the Montana Academy of Sciences 22: 27-44 (1963)

Observations on the life histories of the stick insects Acrophylla tessellata Gray and Extatosoma tiaratum Macleay (Phasmidae)
, Papers Department of Entomology University of Queensland 1: 161-169 (1961)

Observations on the life histories of turtles (genus Pseudemys and Graptewys) in Lake Texoma, Oklahoma
, American Midland Naturalist 65: 193-214 (1961)

Observations on the life history and behavior of Chamaeleo hohnelii (Steindachner)
, Copeia 1965: 401-410 (1966)

Observations on the life history and behavior of Chameleo bitaeniatus Fischer
, Herpetologica 22: 13-23 (1966)

Observations on the life history and bionomics of Oligotoma ceylonica ceylonica Enderlein (Oligotomidae, Embioptera), commensal in the nest of the social spider Stegodyphus samsinorum Karsch
, Journal of the Bombay Natural History Society 64: 447-454 (1968)

Observations on the life history and bionomics of Psalis pennatula F. (Lymantriidae, Lepidoptera), a pest of sugarcane in Rajasthan (India)
, Proceedings of the National Academy of Sciences India, Section B, Biological Sciences 39: 194-200 (1969)

Observations on the life history and bionomics of Rhipicephalus sanguineus (Latreille 1806) under different temperatures and humidities
, Indian J Anim Sci 439: 867-868: 1973 (1974)

Observations on the life history and burrow constructiou of the crayfish Combarus fodiens (Cottle) in a temporary stream in southern Ontario
, Canadian Journal of Zoology 523: 365-370 (1974)

Observations on the life history and control of the cabbage aphis, Brevicoryne brassicae L
, Ann Appl Biol 23(2): 329-341 (1936)

Observations on the life history and development of Leptodactylus albilabris
, Copeia 4: 207-210 (1956)

Observations on the life history and ecology of Eurycea quadridigitata
, HISS News J: 12: 57-58 (1973)

Observations on the life history and ecology of Rana erythraea Schlegel, on Negros Island, Philippines
, Silliman Journal 2: 175-192 (1955)

Observations on the life history and feeding habits of the Indian sardine, Sardinella longiceps (Cuv. & Val.)
, Treubia 25: 207-213 (1960)

Observations on the life history and functional mor-phology of Cerithiopsis tubercularis (Montagu) and Triphora perversa (L.)
, Journal of the Marine Biological Association of the United Kingdom 29: 567-586 (1951)

Observations on the life history and habits of Endalus celatus Burke (Coleoptera: Curculionidae)
, Coleopts Bull 25: 63-65 (1971)

Observations on the life history and habits of Hydromyza con-fluens Loew
, Annals of the Entomological Society of America, 7 135-147 (1914)

Observations on the life history and habits of the pine sawfly Neodiprion nanulus contortae (Hymenoptera: Diprionidae)
, Annals ent Soc Am 693: 391-394 (1976)

Observations on the life history and morophology of Ornithodoros Kelleyi (Acarina: Argasidae)
, Dissertation Abstracts 20: 3446-3447 (1960)

Observations on the life history and morphioogy of Agulla astuta (Banks) (Neuroptera: Raphidloidea: Rapfaidiidae)
, Annals of the Entomological Society of America 52: 489-502 (1959)

Observations on the life history and morphology of Agulla bractea Carpenter (Neuroptera: Raphidiodea: Raphidiidae)
, Annals of the Entomological Society of America 51: 129-141 (1958)

Observations on the life history and morphology of Kermes pubescens Bogue (Homoptera: Coccoidea: Dactylopiidae)
, Annals of the Entomological Society of America 52: 463-468 (1959)

Observations on the life history and movement of cutthroat trout, Salmo clarki, in Flathead River drainage, Montana
, Proceedings of the Montana Academy of Sciences 23: 96-100 (1964)

Observations on the life history and movement of the goldeye, Hiodon alosoides in Montana
, Proceedings of the Montana Academy of Sciences 26: 45-53 (1967)

Observations on the life history and predatory behaviour of Zelus exsanguis (Stal) (Heteroptera: Reduviidae)
, Proct. Soc. Lond. Ser. A: 21-24 (1966)

Observations on the life history and sensory behavior of the snake mite, Ophionyssus natricis (Gervais) (Acarina: Macronyssidae)
, Special Publications of the Chicago Academy of Sciences 10: 1-75 (1953)

Observations on the life history of Chaerilus philippinus Lourenço & Ythier, 2008 (Scorpiones, Chaerilidae) from the Philippines
, Comptes Rendus Biologies 331(11): 896-900 (2008)

Observations on the life history of Aelurostrongylus abstrusus (Railliet), the lungworm of the cat
, Jnth. London: 55-66 (1927)

Observations on the life history of Agrilus bilineatus
, Journal of Agricultural Research Washington, 3 283-294 (1914)

Observations on the life history of Allocreadium iclaluri Pearse
, Journal of Parasitology Suppl, 346: 37 (1948)

Observations on the life history of Alloglossidium macrobdellensls (Trematoda: Macroderoididae) from Macrobdella ditreta (Hirudinea: Hirudinidae)
, American Midland Naturalist 932: 484-491 (1975)

Observations on the life history of Ambyetoma opacum
, Copeia Northampton 134: 86-88 (1924)

Observations on the life history of Amphiuma means
, Copeia 1: 61-62 (1944)

Observations on the life history of Antilochus cocquerberti, a predator of Dysdercus koenigi
, J Econ Entomol 59(3): 767-768 (1966)

Observations on the life history of Argynnis hyperbius lnconstans Butler (Lepidoptera: Nymphalidae)
, Australian ent Mag 41: 13-16 (1977)

Observations on the life history of Calephelis borealis
, Part I Lepid News New Haven 7: 119-122 (1953)

Observations on the life history of Callophrys xami (Lycaenidae)
, Journal of the Lepidopterist's Society 18: 85-89 (1964)

Observations on the life history of Camallanus sweeti
, Jour Parasitol 24(4): 323-337 (1938)

Observations on the life history of Chilomastix
, American Journal of Hygiene 16(1): 85-96 (1932)

Observations on the life history of Chinese alligator (Alligator sinensis Fauvel)
, Acta Zoologica Sinica 9(2): 129-143 (1957)

Observations on the life history of Chlorosea banksaria Sperry (Lepidoptera: Geometridae)
, Pan-Pacific Entomologist 25: 24-26 (1949)

Observations on the life history of Chrysoritis braueri (Pennington) (Lepidoptera: Lycaenidae)
, Unknown (2006)

Observations on the life history of Crangonyxrichmondensis richmondensis Ellis
, Am. Midl. Nat.: 83: 315-318 (1970)

Observations on the life history of Cucullia asteroides Gn
, Canadian Entomologist 76: 161-162 (1944)

Observations on the life history of Diplectrum pacificum and D. macropoma (Pisces, Serranidae) from the Bay of Panama
, Pacific Science 311: 49-60 (1977)

Observations on the life history of Hesperocorixa interrupta (Say) (Hemiptera: Corixidae)
, Virginia J Richmond (N.S.): 111-115 (1953)

Observations on the life history of Hookworm in nature
, Indian Journal of Medical Research Calcutta 13: 301-320 (1925)

Observations on the life history of Hypothyce mixta Howden (Coleoptera: Scarabaeidae). Coleopterists
, IUCN Bull 294: 251-256 (1975)

Observations on the life history of Lepidochrysops balli Dickson (Lepidoptera; Lycaenidae)
, Metamorphosis 16(4): 106-109 (2005)

Observations on the life history of Lipeurus tropicalis Peters (Mallophaga: Ischnocera)
, Research Bulletin of the Panjab University, Science 10: 179-187 (1959)

Observations on the life history of Mattesia trogodermae sp.n. a schizogregarine parasite of the fat body of the Khapra beetle, Trogoderma granarium Everts
, Journal of Insect Pathology 6: 305-317 (1964)

Observations on the life history of Neoachongastia kallipygos Gunther 1939 (Acarina : Trombidiidae)
, Proceedings of the Linnean Society of New South Wales 64(5-6): 471-473 (1939)

Observations on the life history of Ogcodes rufoabdominalis in northern Utah (Diptera: Acroceridae)
, J ent. Soc: 641-649 (1966)

Observations on the life history of Ornithodoros kelleyi Cooley & Kohls,1941(Acarina: Argasidae)
, Journal of Parasitology, 454: 24 (1959)

Observations on the life history of Phyllodistomum srivastavai n.sp. (Trematoda: Gorgoderidae). Part 1. Metacercaria and experimental adult
, Annual Number Natn Acad Sci lndia, 1961: 111-112 (1962)

Observations on the life history of Pseudacris triseriata (Wied) in Oklahoma
, Wasmann Collector 74: 149-108 (1948)

Observations on the life history of Pycnoscelus surinamensis (Linn.), the intermediate host of the chicken eyeworm in Hawaii
, Proceedings of the Hawaiian Entomological Society 13: 433-436 (1948)

Observations on the life history of Rhabdias sphaerocephala Goodey, 1924 from Bufo marinus L., in the Bermuda Islands
, Journal of Helminthology 34: 93-98 (1960)

Observations on the life history of Seurocyrnea colini
, Journal of Parasitology Urbana 20: 98 (1933)

Observations on the life history of Siren lacertina
, Herpetologica 294: 304-305 (1973 )

Observations on the life history of Spelotrema nicolli n. sp. (Trematoda: Microphallidae), with the description of a new Microphallid cercaria
, Journal of Parasitology Suppl 246: 29-30 (1938)

Observations on the life history of Tetrameres pattersoni
, Journal of Parasitology Urbana 20: 97-98 (1933)

Observations on the life history of Toxocara canis and Toxascaris leonina, and the influence of environmental factors on their development
, Bulletin of the George Washington University Washington, 1934-36: 14-16 (1936)

Observations on the life history of Trichodes ornatus (Coleoptera, Cleridae), a larval predator in the nests of bees and wasps
, Annals of the Entomological Society of America 36: 589-601 (1943)

Observations on the life history of Trichoptilus paludum Zell
, London Transactions of the Entomological Society, 133-154 (1906)

Observations on the life history of a fingernail shell of the genus Sphaerium
, Jour Morphol 53(3): 473-497 (1932)

Observations on the life history of a new species of Psychoda
, Annals of the Entomological Society of America, 5 411-418 (1912)

Observations on the life history of a rabbit tick (Otobius lagophilus)
, Journal of the Kansas Entomological Society 28: 114-116 (1955)

Observations on the life history of frogs of the family Atelopodidae
, Herpetologica 23: 195-203 (1967)

Observations on the life history of living nematodes using snails as intermediate hosts
, American Journal of Veterinary Research 930: 107-112 (1948)

Observations on the life history of lung nematodes using snails as intermediate hosts
, American Journal of Vet Res 9(30): 109-112 (1948)

Observations on the life history of red cotton bug, Dysdercus cingulatus (Hemiptera, Pyrrhocoridae)
, Indian Journal of Entomology 20(1958): 228-234 (1959)

Observations on the life history of the Baltimore checker-spot butterfly, Euphydryas phaeton
, Transactions of the Academy of Science of St Louis 28: 227-230 (1934)

Observations on the life history of the Brazilian frog, Oocormus microps. Copeia,
, Ann Arbor Michigan 1943: 225-231 (1944)

Observations on the life history of the Chinese bittering, Paracheilognathus imberbis (Gunther)
, Bulletin of the Fan Memorial Institute of Biology Peiping 2: 245-256 (1931)

Observations on the life history of the Cuban lizard, Anolis lucius
, Herpetologica 13: 241-245 (1957)

Observations on the life history of the Red Squirrel in New York
, American Nat. Notre Dame: 732-745 (1939)

Observations on the life history of the amphibian Triturus viridescens in Western Pennsylvania
, Proceedings of the Pennsylvania Academy of Science 6: 164-165 (1932)

Observations on the life history of the cat lungworm, Aelurostrongylus abstrusus (Railliet) 1898
, Australian Journal of Zoology 5: 188-195 (1957)

Observations on the life history of the citrus King Page
, Journal of the Trinidad Field Naturalists Club 1956: 11-16 (1957)

Observations on the life history of the common mosquito
, PQueensland: 111-131 (1900)

Observations on the life history of the leech Macrobdella ditetra (Hirudinea: Hirudinidae)
, Proceedings of the Louisiana Academy of Sciences 36: 61-63 (1973)

Observations on the life history of the niidibranch OncMdoris muricata (Muller)
, Proceedings of the Malacological Society of London 34: 239-242 (1961)

Observations on the life history of the northern pine mouse
, Jour Mammal 36(1): 52-62 (1955)

Observations on the life history of the poplar hawk moth, Laothoe populi L. Part I, Mating, egg laying and larval development and behaviour
, Proct. Soc. Lond. (A): 93-102 (1966)

Observations on the life history of the salamander Necturus louisianensis
, Copeia 4: 257-260 (1954)

Observations on the life history of the scorpion Urodacus abruptus Pocock (Scorpionidae), and an analysis of its home sites
, Australian Journal of Zoology 14: 383-398 (1966)

Observations on the life history of the soft-shelled turtle Trionyx ferox, with especial reference to growth
, Unknown (1955)

Observations on the life history of the treefrog, Phyllomedusa callidryas (Cope)
, Texas Journal of Science 15: 155-170 (1963)

Observations on the life history of three stream-dwelling watermites
, Acarologia 8: 86-93 (1966)

Observations on the life history, ecology and distribution of Desmognathus aeneus aeneus Brown & Bishop
, American Midland Naturalist 77: 356-370 (1967)

Observations on the life history, habits and control of the narcissus bulb fly, Merodon equestris Fab., in Oregon
, Journal of Economic Entomology 20: 708-714 (1927)

Observations on the life history, movement, and harvest of the paddlefish, Polyodon spathula, in Montana
, Proceedings of the Montana Academy of Sciences 26: 33-44 (1967)

Observations on the life of Elsinore Lake
, Journal of Entomology and Zoology Claremont 17: 33-38 (1925)

Observations on the life of Oyxbelus uniglumis L. (Hym., Sphegidae)
, Annales Entomologici Fennici 11: 213-217 (1945)

Observations on the life of the ponds at the head of Laguna Canyon
, d Zool. Claremont Cal: 1-12 (1924)