Taxonomic review of Aclis Lóven, 1846 (Gastropoda, Eulimidae) from Brazil with notes on other congeners from the western Atlantic and Saint Helena Author Souza, Leonardo Santos De 0000-0002-8242-010X Author Araújo, Tarciso Almeida De 0000-0002-8242-010X Departamento de Invertebrados, Museu Nacional, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista., São Cristóvão, 20940 - 040, Rio de Janeiro, RJ, Brazil. Author Pimenta, Alexandre Dias 0000-0002-8242-010X Departamento de Invertebrados, Museu Nacional, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista., São Cristóvão, 20940 - 040, Rio de Janeiro, RJ, Brazil. text Zootaxa 2024 2024-04-09 5433 4 451 499 http://dx.doi.org/10.11646/zootaxa.5433.4.1 journal article 10.11646/zootaxa.5433.4.1 1175-5326 10954420 7ADF6A54-E31C-453A-AA25-44DEDBCF2752 Genus Aclis Lóven, 1846 Type species . Alvania supranitida Wood, 1842 [= Aclis minor ( Brown, 1827 ) ], by monotypy. Eastern Atlantic and Mediterranean. Syntypes of A. minor were figured by Oliver et al. (2020 : Fig. 13 ). Description. Shell vitreous, usually elongated; protoconch smooth, globose, dome shaped, paucispiral or multispiral; teleoconch with convex whorls, commonly with one or more spiral keels, presence of microscopic spiral striae close to the sutures; aperture wide, outer lip usually opisthocline, inner lip distinctly reflected, umbilical fissure commonly present, most anterior region of aperture commonly drawn out towards the center of the shell and flattened (adapted from Bouchet & Warén 1986 ). Remarks. A complete list of synonyms was presented by Bouchet & Warén (1986) . Only Cyclonidea Laseron, 1956 ( Type species: Cyclonidea carina Laseron, 1956 , by original designation), which was previously synonymized with Aclis is currently considered as valid ( Poppe & Tagaro 2016 ).