nigromarginatus, Mastacembelus Boulenger [G. A.] 1898:23 [Transactions of the Zoological Society of London v. 15 (pt 1, no. 1); ref. 547] Ashantee, Guinea [?Ashanti, Ghana]. Holotype (unique): BMNH 1899.10.26.5. •Valid as Caecomastacembelus nigromarginatus (Boulenger 1898) -- (Travers 1984:145 [ref. 5147], Gosse 1986:426 [ref. 6194]). •Valid as Aethiomastacembelus nigromarginatus (Boulenger 1898) -- (Paugy et al. 1990:343 [ref. 26477], Lévèque et al. 1991:146 [ref. 31367], Travers 1992:337 [ref. 14258], Travers in Lévêque et al. 1992:852 [ref. 21590]). •Valid as Mastacembelus nigromarginatus Boulenger 1898 -- (Vreven & Teugels 2005:332 [ref. 28650], Brown et al. 2011:287 [ref. 31286]). Current status: Valid as Mastacembelus nigromarginatus Boulenger 1898. Mastacembelidae. Distribution: West Africa. Habitat: freshwater.