nigricans, Nematogenys Philippi [R. A.] 1866:716 [Monatsberichte der Königlichen Preussischen Akademie der Wissenschaften zu Berlin 1866 (for 15 Nov. 1866); ref. 14056] Chile. No types known. Type catalog: Ferraris 2007:324 [ref. 29155]. •Valid as Nematogenys nigricans Philippi 1866 -- (de Pinna 1998:295 [ref. 23847]). •Synonym of Nematogenys inermis (Guichenot 1848) -- (de Pinna in Reis et al. 2003:268 [ref. 27061], Ferraris 2007:324 [ref. 29155]). Current status: Synonym of Nematogenys inermis (Guichenot 1848). Nematogenyidae. Habitat: freshwater.