Species that contain: Hymenocephalus and tenuis [ 2 ] records

striatulus, Hymenocephalus Gilbert [C. H.] 1905:665, Figs. 259 [Bulletin of the U. S. Fish Commission v. 23 (pt 2) [for 1903]; ref. 1631] Off southwestern coast of Oahu Island, Hawaiian Islands, Albatross station 4122, depth 192-352 fathoms. Holotype: USNM 51611. Paratypes: CAS-SU 8637 (3), USNM 231817 (1). Type catalog: Böhlke 1953:58 [ref. 12291]. Fowler assigns specimens from Albatross Station 3920 to the new species Hymenocephalus tenuis. •Valid as Hymenocephalus striatulus Gilbert 1905 -- (Iwamoto in Cohen et al. 1990:230 [ref. 18936], Pequeño 1997:82 [ref. 23536], Iwamoto & Williams 1999:178 [ref. 23875], Mundy 2005:252 [ref. 28379], Schwarzhans 2014:45 [ref. 33586]). Current status: Valid as Hymenocephalus striatulus Gilbert 1905. Macrouridae. Distribution: Pacific: Hawaiian Islands, Sala-y-Gomez Ridge (southeastern Pacific). Habitat: marine.

tenuis, Hymenocephalus Gilbert [C. H.] & Hubbs [C. L.] 1917:173 [Proceedings of the United States National Museum v. 54 (no. 2231); ref. 15093] Off southern coast of Oahu Island, Hawaiian Islands, Albatross station 3920, depth 265-280 fathoms. Holotype (unique): USNM 78177. •Valid as Hymenocephalus tenuis Gilbert & Hubbs 1917 -- (Iwamoto in Cohen et al. 1990:230 [ref. 18936], Mundy 2005:252 [ref. 28379], Schwarzhans 2014:26 [ref. 33586]). •Valid as Hymenogadus tenuis (Gilbert & Hubbs 1917) -- (Nakayama 2020:224 [ref. 37888]). Current status: Valid as Hymenogadus tenuis (Gilbert & Hubbs 1917). Macrouridae. Distribution: Hawaiian Islands. Habitat: marine.