flavicaudus, Sphagebranchus Snyder [J. O.] 1904:516, Pl. 2 (fig. 4) [Bulletin of the U. S. Fish Commission v. 22 [1902]; ref. 4149] Auau Channel, between Mauai Island and Lanai Island, Hawaiian Islands, Albatross station 3874, depth 21-28 fathoms. Holotype: USNM 50863. Paratypes: CAS-SU 7509 (1). Additional material: USNM 320113 (1). Type catalog: Böhlke 1953:50 [ref. 12291], Smith 1994:36 [ref. 21917]. •Valid as Apterichtus flavicaudus (Snyder 1904) -- (McCosker 1977:66 [ref. 6836], Machida & Ohta 1994:3 [ref. 21444], Hatooka 1995:2 [ref. 24353], Smith & McCosker 1999:1668 [ref. 24715], Nakabo 2000:219 [ref. 25086], Randall & Earle 2000:8 [ref. 25806], McCosker 2002:25 [ref. 25848], Nakabo 2002:219 [ref. 26001], Randall et al. 2004:6 [ref. 27624], McCosker & Randall 2005:6 [ref. 28054], Mundy 2005:130 [ref. 28379], McCosker & Stewart 2006:92 [ref. 28702], McCosker et al. 2006:266 [ref. 29006], Randall 2007:62 [ref. 30952], McCosker & Hibino 2015:60 [ref. 33725], McCosker & Stewart 2015:252 [ref. 34235], Hibino et al. 2016:150 [ref. 34475], McCosker 2022:105 [ref. 39686]). Current status: Valid as Apterichtus flavicaudus (Snyder 1904). Ophichthidae: Ophichthinae. Distribution: Indo-West Pacific: ?Seychelles east to Midway Island and Hawaiian Islands (U.S.A.), south to northern Australia, Lord Howe Island (Azustralia) and Rapa (French Polynesia). Habitat: marine.