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Cottunculus nudus new species a new psychrolutid fish from new zealand scorpaeniformes cottoidei



Cottunculus nudus new species a new psychrolutid fish from new zealand scorpaeniformes cottoidei



Copeia (2): 401-408



Cottunculus nudus n. sp., described from 21 specimens collected off New Zealand, differs from the other species of Cottunculus Collett in three characters previously employed in the generric definition: two postorbital bones are present (as in species of other genera of Psychrolutidae), some cirri are present, and skin prickles are absent. Nevertheless, the new species is placed in Cottunculus because it shares other characters with members of that genus, particularly with the Atlantic species Cottunculus thomsonii Guenther and C. granulosus Karrer. The cranial osteology of C. nudus is similar to that of C. thomsonii and C. granulosus. In meristic and morphometric characters it is most similar to C. granulosus (the plain-colored form). A key to the species of Cottunculus is presented.

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