cuvieri, Xiphostoma Spix [J. B. von] & Agassiz [L.] 1829:79, Pl. 42 [Selecta genera et species piscium quos in itinere per Brasiliam; ref. 13] Rivers of Brazil. Holotype (unique): MHNN 823. Type catalog: Kottelat 1984:146 [ref. 21784], Kottelat 1988:84 [ref. 13380]. •Synonym of Boulengerella lucius (Cuvier 1816) -- (Taphorn 1992:403 [ref. 23654]). •Valid as Boulengerella cuvieri (Spix & Agassiz 1829) -- (Vari 1995:74 [ref. 21840], Chang & Ortega 1995:3 [ref. 24302], Vari in Reis et al. 2003:252 [ref. 27061] with author as Agassiz, Barriga Salazar 2014:110 [ref. 35745], DoNascimiento et al. 2017:45 [ref. 35633] with author as Agassiz, Urbano-Bonilla et al. 2018:83 [ref. 35773], Silvano et al. 2020:92 [ref. 38133], Meza-Vargas et al. 2021:15 [ref. 39298], Koerber et al. 2022:27 [ref. 39235], Taphorn et al. 2022:22 [ref. 41297], Cortés Hernández et al. 2023:456 [ref. 40760]). Current status: Valid as Boulengerella cuvieri (Spix & Agassiz 1829). Ctenoluciidae. Distribution: South America: Brazil, Ecuador, Colombia, French Guiana, Guyana, Peru and Venezuela. Habitat: freshwater.