Hymenocephalus gracilis Gilbert and Hubbs, 1920
Synonyms:
H. (Hymenogadus) gracilis Gilbert and Hubbs, 1920, U.S. Nat. Mus. Bull. 100 (1), 7: 522-525, fig. 31.
H. (Hymenogadus) gracilis: Maul, 1976: 28, fig. 12.
Common name:
graceful grenadier [UK and USA]