Xiphostoma Agassiz [L.] in Spix & Agassiz 1829:60, 78 Neut. Xiphostoma cuvieri Spix & Agassiz 1829. Type by monotypy. Objectively invalid; preoccupied by Xiphostoma Kirby & Spence 1818 in Hemiptera, replaced by Spixostoma Whitley 1951. Spelled Xiphostomus by Swainson 1839:290 [ref. 4303], also Xyphostoma by authors. For authorship and date see Kottelat 1988:78 [ref. 13380]. •In the synonymy of Boulengerella Eigenmann 1903 -- (Taphorn 1992:403 [ref. 23654], Vari 1995:57 [ref. 21840], Vari in Reis et al. 2003:252 [ref. 27061]). 1°Homonym. Current status: Synonym of Boulengerella Eigenmann 1903. Ctenoluciidae.