graciliceps, Rachoviscus Weitzman [S. H.] & Cruz [C. A. G. da] 1981:1003, Figs. 1-2 [Proceedings of the Biological Society of Washington v. 93 (no. 4); ref. 8528] About 1 kilometer north of Prado, about 500 meters from Atlantic, Bahia, Brazil, 17°19'S, 39°14'W. Holotype: MZUSP 14387. Paratypes: MNRJ 10585-86 (2), MZUSP 14388-90 (3), USNM 220355 (3). Type catalog: Vari & Howe 1991:37 [ref. 19022], Oyakawa 1996:493 [ref. 23140]. •Valid as Rachoviscus graciliceps Weitzman & Cruz 1981 -- (Lima in Reis et al. 2003:155 [ref. 27061], Silva et al. 2020:7 [ref. 37809], Bertaco 2022:102 [ref. 40102], Vieira-Guimarães et al. 2024:39 [ref. 41258]). Current status: Valid as Rachoviscus graciliceps Weitzman & Cruz 1981. Acestrorhamphidae: Thayeriinae. Distribution: South America: coastal river basins, southern Bahia State (Brazil). Habitat: freshwater.