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Casanova, 1992

Hooks: 13-14; anterior teeth: 4-6; posterior teeth: 2-5.
Maximum adult body length: 8 mm; tail: 40-44 %.
Body large and firm, opaque; transversal musculature present; head wide; hooks not serrated. Fin bridge absent; one pair of medium length lateral fins both on trunk and tail; lateral fins fully rayed, rounded. Collarette long and narrow; gut diverticula absent; eyes absent. Seminal vesicles conical; position of seminal vesicles: touching posterior fins and separated from tail fin. Ovaries short; ova fairly small. Adhesive papillae and adhesive organs absent. Vestibular organs with one row of papillae; apical gland cell complex present; neck canals present.

Distribution: bathypelagic.

Remarks: 3 specimens found at about 1300 m in the East Pacific.

Type locality: 33°17'N, 118°37'W.

Heterokrohnia wishnerae