ritteri, Centroscyllium Jordan [D. S.] & Fowler [H. W.] 1903:635, Fig. 6 [Proceedings of the United States National Museum v. 26 (no. 1324); ref. 2460] Misaki, Japan. Holotype: CAS-SU 7185. Paratypes: USNM 51388 (1). Type catalog: Böhlke 1953:10 [ref. 12291], Howe & Springer 1993:12 [ref. 21812]. Types: Shinohara & Williams 2006:547 [ref. 31656]. Genus misspelled Centrocyllium two of 6 times. •Valid as Centroscyllium ritteri Jordan & Fowler 1903 -- (Shirai in Amaoka et al. 1983:49, 165 [ref. 8379], Compagno 1984:52 [ref. 6474], Nakaya & Shirai in Masuda et al. 1984:9 [ref. 6441], Shirai & Nakaya 1990:397 [ref. 17335], Compagno 1999:473 [ref. 25589], Nakabo 2000:144 [ref. 25086], Sheiko & Fedorov 2000:14 [ref. 25650], Nakabo 2002:144 [ref. 26001], Parin et al. 2014:26 [ref. 33547], Dyldin 2015:55 [ref. 34524], Weigmann 2016:58 [ref. 34211]). Current status: Valid as Centroscyllium ritteri Jordan & Fowler 1903. Etmopteridae. Distribution: Western North Pacific: Japan and Kuril Islands. Habitat: marine.