New and supplementary observations on holotrichous ciliates L

Kahl, A.

Archiv für Protistenkunde 60(1): 34-129

1927


ISSN/ISBN: 0003-9365
Accession: 025069997

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Abstract
The structure and nature of trichocysts, trichites, and pharyngeal rods, as they occur in ciliates, are discussed. These are classified as follows: (1) trichocysts, ecto-plasmic, endoplasmic and pharyngeal; (2) trichites, simple and composite, the latter term including double trichites, and trichite bundles, from which by further specialization fibrils and fibrillar bundles are derived. The author reviews and sharpens the diagnoses of the genera of Holophyridae (to which Stephanopogon Entz and Plagiopogon Stein are transferred from Colepidae), and summarizes this information in a key. The following are described: Holophrya mamillata* (p. 53), H. truncata*(p. 56), SPASMOSTOMA, resembling Holophrya, with S. viride*(p. 58), Plagiocampa longis*(p. 60), P. minima*(p. 61), Urotricha armata* (p. 64), U. synuraphaga* (p. 64), Pseudoprorodon vesiculatus*(p. 71), P. major* (p. 72) (on the same page sunk under P. (Prorodon) lieberkuhni* (Butsch.)), P. sulcatus*(p. 72), Prorodon minutus*(p. 78), P. viridis*(p. 79), P. brachyodon*(p. 85), Platyophrya spumacola* (p. 90), LAGYNOPHRYA, near Lagynus and Holophrya, with L. mutans*(p. 91) and var. conifera* (p. 92), L. fusidens*(p. 93), L. mucicola* (p. 93), L. simplex* (p. 93), L. rostrata*(p. 93), L. retrac-tilis* (p. 94), Thoracophrya marina* (p. 96), Lacrymaria minima* (p. 103), L. sapropelica* (p. 104), Lagynus vestitus*(p. 106), L. mucicola* (p. 107), L. faurei*(p. 107), Trachelocerca entzi*(p. 120), Prorodon teres vars. postogingivalis* (p. 83) and crassa* (p. 83), P. (sub-genus Rhagadostoma) completum v. candens* (p. 89) (the author's genus Rhagadostoma is reduced to a subgenus of Prorodon). Emended diagnoses are given for the following: Urotricha, Prorodon, Rhagadostoma, Pseudoprorodon, Holophrya, Pithothorax {Gymnopithus ovatus Kahl and Micropithus simplex Kahl being referred to Pithothorax, which is shifted from Colepidae to Holophryidae); under the last are sunk Micropithus Kahl and Gymnopithus Kahl Observations on structure, affinities, or biological relations are recorded for the following: Holophrya gargamellae* Faure-Fremiet, H. vesiculosa* (Prorodon vesiculosus Kahl) (p. 52), H. alveolata (Urotricha a. Kahl) (p. 57), H. gracilis (U. g. Penard) (p. 57), Urotricha lagenula (Ehrbg.) (referred to Holophrya), U. farcta* ( = Balanilozoon gyrans Stokes = Urotricha parvula Pen.), U. hyalina Smith, Pseudoprorodon niveus* (Ehrbg.), P. emmae* (Holophrya e. Bergh (p. 68) = Prorodon robustus Pen.), Prorodon discolor* (Ehrbg.), P. teres* Ehrbg., P. abietum Pen., P. platyo-don* Blochm., P. armatus* C. & L., P. margaritifer* C. & L., P. nudicaudatum (Rhagadostoma n. Kahl) (p. 88), P. completum (R. c. Kahl) (p. 89), Lacrymaria aquae-dulcis* Lauterb., L. coronata* C. & L., L. lagenula* C. & L., L. spiralis* Kahl, L. cohni* Kent, L. vertens*Stokes,L. salinarum*Kahl,L.eiegrons*Engelm. ( = L. penardi Kahl), L. putrina* Kahl, Lagynus lasius* Stokes, Chaenia teres* Duj., C. limicola Lev., Trachelocerca phoenicopterus* Cohn, and T. sulcata* (Gruber). The author points out that it is possible to regard Pseudoprorodon as an ancestral type from which, by divergent evolution, might have come the 3 lines represented by Prorodon, Spathidium, and Amphileptus.