retrotinctus, Leptocephalus Jordan [D. S.] & Snyder [J. O.] 1901:853, Fig. 6 [Proceedings of the United States National Museum v. 23 (no. 1239); ref. 2508] Tokyo market, Japan. Holotype: CAS-SU 6470. Paratypes: USNM 49974 (1). Type catalog: Böhlke 1953:48 [ref. 12291]. •Valid as Rhechias retrotincta (Jordan & Snyder 1901) -- (Asano in Masuda et al. 1984:28 [ref. 6441], Smith 1989:533 [ref. 13285], Machida et al. 1994:313 [ref. 22167], Lee & Joo 1999:28 [ref. 25724], Shinohara et al. 2001:294 [ref. 25995], Choi et al. 2003:146, 494 [ref. 26218], Zhang et al. 2010:213 [ref. 31511]). •Valid as Bathycongrus retrotinctus (Jordan & Snyder 1901) -- (Ben-Tuvia 1993:365 [ref. 21130], Castle 1995:710 [ref. 22123], Castle & Smith 1999:993 [ref. 25141], Nakabo 2000:232 [ref. 25086] as retrotincta, Nakabo 2002:232 [ref. 26001], Hoese & Gates 2006:290 [ref. 28997], Karmovskaya & Smith 2008:35 [ref. 29972], Karmovskaya 2011:417 [ref. 31456], Ho et al. 2015:145 [ref. 34130], Smith & Ho 2018:140 [ref. 36042], Fricke et al. 2019:54 [ref. 36673], Kim et al. 2020:57 [ref. 39118], Ramos-Castro et al. 2021:515 [ref. 38842]). Current status: Valid as Bathycongrus retrotinctus (Jordan & Snyder 1901). Congridae: Congrinae. Distribution: Western Pacific: Philippines and New Ireland (Papua New Guinea) north to Taiwan, Korea and southern Japan, south to northern Australia. Habitat: marine.