watasei, Aleposomus Tanaka [S.] 1909:14 [Journal of the College of Science. Imperial University, Tokyo v. 27 (art. 8); ref. 4322] Off Okinose, Sagami Bay, Japan, depth 700 fathoms. Holotype: ZUMT 2147. Paratypes: ZUMT 2148 (1). Type catalog: Aizawa et al. 2022:223 [ref. 39655]. The paratype is also the holotype of Rouleina tanakae. •Valid as Rouleina watasei (Tanaka 1909) -- (Machida in Masuda et al. 1984:43 [ref. 6441], Machida in Okamura & Kitajima 1984:139, 331 [ref. 8057], Okamura & Machida 1986:31 [ref. 22278], Sazonov 1999:437 [ref. 24874], Nakabo 2000:293 [ref. 25086], Nakabo 2002:293 [ref. 26001], Shinohara et al. 2005:404 [ref. 28370]). •Synonym of Rouleina squamilatera (Alcock 1898) -- (Sazonov & Williams 2001:S24 [ref. 26712]). Current status: Valid as Rouleina watasei (Tanaka 1909). Alepocephalidae. Distribution: Western North Pacific. Habitat: marine.