Proceedings of the California Academy of Sciences volume 42
Proceedings of the California Academy of Sciences volume 42
California Academy of Sciences
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Gill-rakers fewer than 20 (total) on first arch. Second spinous dorsal ray smooth or serrated 2 2a. Spinous second ray of first dorsal fin with smooth leading edge (Fig. 2a) 3 2b. Spinous second ray of first dorsal fin with serrated leading edge 5 3a. Chin barbel absent a broad naked margin dermal window Mesobius berryi Hubbs and Iwamoto (p. 141) FIGURE 3. Diagrammatic ventral views of abdomen of grenadiers showing periproct location (a) abutting or close to (separated by a few scale rows in so...me individuals) origin of anal fin, and (b) periproct far removed from origin of anal fin. 3b. Chin barbel present, well developed __. _ 4 4a. Teeth large, in a single row on lower jaw (Fig. 2a); scales on branchiostegal mem- brane (Fig. 2b) __ Malacocephalus laevis (Lowe) (p. 149) 4b. Teeth small, in a narrow band on lower jaw; no scales on branchiostegal mem- branes Nezumia liolepis (Gilbert) (p. 157) 5a. Periproct close to or abutting (Fig. 3a) origin of anal fin; anus usually closer to origin of anal fin than to insertion of pel- vic fins 6 5b.
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