excelsum, Centroscyllium Shirai [S.] & Nakaya [K.] 1990:392, Figs. 1-4a [Japanese Journal of Ichthyology v. 36 (no. 4); ref. 17335] Emperor Seamount Chain (38°37'-49°59'N, 171°06'-171°00'E), depth 800-1000 meters. Holotype: HUMZ 59470. Paratypes: CAS 64434 (1); HUMZ 68733 (1), 69262 (1), 69264-65 (1, 1), 69275 (1, dissected), 69276 (1), 69278 (1), 69280 (1); NSMT-P 30094 (1); USNM 300576 (1). Additional material: HUMZ 69267-68 (2, dissected), 69269-74 (6), 69277 (1), 113277 (1, embryo from HUMZ 6873), 113271-76 (6, embryos from HUMZ 6873), 113278 (1, embryo from HUMZ 6873); NSMT-P 30095-96 (2, embryos from HUMZ 6873). Type catalog: Howe & Springer 1993:7 [ref. 21812]. •Valid as Centroscyllium excelsum Shirai & Nakaya 1990 -- (Compagno 1999:473 [ref. 25589], Nakabo 2000:144 [ref. 25086], Nakabo 2002:144 [ref. 26001], Weigmann 2016:57 [ref. 34211]). Current status: Valid as Centroscyllium excelsum Shirai & Nakaya 1990. Etmopteridae. Distribution: Emperor Seamount Chain. Habitat: marine.