| Steironepion moniliferum (Sowerby I, 1844) |
| Suturoglypta pretrii (Duclos, 1846) |
| Astyris profundi (Dall, 1889) |
| Mitrella proscripta (E. A. Smith, 1890) |
| Astyris pura A. E. Verrill, 1882 |
| Zafrona pulchella (Blainville, 1829) |
| Astyris raveneli (Dall, 1889) |
| Costoanachis roberti (K. & D. Monsecour, 2006) |
| Astyris sagenata Dall, 1927 |
| Steironepion pygmaeum (C. B. Adams, 1850) |
| Parvanachis radwini (Altena, 1975) |
| Costoanachis rudyi Espinosa & Ortea, 2006 |
| Columbella reticulata Lamarck, 1822 [Extralimital?] |
| Parvanachis rhodae (Radwin, 1968) |
| Cosmioconcha rikae K. & D. Monsecour, 2006 |
| Strombina pumilio (Reeve, 1859) |
| Suturoglypta procera Simone & Gracia, 2006 |
| Astyris perlucida Dall, 1927 |
| Astyris multilineata (Dall, 1889) |
| Costoanachis nisitella (Duclos, 1840) |
| Cosmioconcha nitens (C. B. Adams, 1850) |
| Nitidella nitida (Lamarck, 1822) |
| Parvanachis ostreicola (Sowerby III, 1882) |
| Mitrella nitidulina (Locard, 1897) |
| Columbellopsis nycteis (Duclos, 1846) |
| Aesopus obesus (Hinds, 1844) |
| Parvanachis obesa (C. B. Adams, 1845) |
| Conella ovulata (Lamarck, 1822) |
| Conella ovuloides (C. B. Adams, 1850) |
| Mitrella ocellata (Gmelin, 1791) |
| Parvanachis paessleri (Strebel, 1905) |
| Astyris projecta Dall, 1927 |
| Costoanachis sertulariarum (d'Orbigny, 1839) |
| Astyris rolani Espinosa, Fernández-Garcés & Ortea, 2004 |
| Astyris rosacea (Gould, 1840) |
| Alia unifasciata (Sowerby I, 1832) [Extralimital] |
| Anachis varia (Sowerby I, 1832) |
| Euplica varians (Sowerby I, 1832) [Extralimital] |
| Astyris verrilli (Dall, 1881) |
| Astyris vidua Dall, 1924 |
| Cotonopsis argentea (Houbrick, 1983) |
| Astyris appressa Dall, 1927 |
| Astyris antares (Costa & de Souza, 2001) |
| Anachis alliouagana Faber, 2004 |
| Mokumea albovittata (Lopes, Coelho & Cardoso, 1965) |
| Suturoglypta albella (C. B. Adams, 1850) |
| Astyris angeli Espinosa, Fernández-Garcés & Ortea, 2004 |
| Astyris amphissella (Dall, 1881) |
| Amphissa acutecostata (Philippi, 1844) |
| Nassarina thetys Costa & Absalao, 1998 |
| Zafrona taylorae Petuch, 1987 |
| Mitrella tosatoi K. & D. Monsecour, 2006 |
| Astyris rubra (Martens, 1881) |
| Columbella rusticoides Heilprin, 1886 |
| Costoanachis scutulata (Reeve, 1859) |
| Costoanachis semiplicata (Stearns, 1873) |
| Mitrella sanctaehelenae (E. A. Smith, 1890) |
| Aesopus stearnsii (Tryon, 1883) |
| Costoanachis similis (Ravenel, 1861) |
| Decipifus sixaolus Olsson & McGinty, 1958 |
| Costoanachis sparsa (Reeve, 1859) |
| Astyris stemma Dall, 1927 |
| Astyris stricta (Watson, 1882) |
| Astyris strix (Watson, 1882) |
| Costoanachis translirata (Ravenel, 1861) |
| Zafrona sunderlandi Petuch, 1987 |
| Amphissa acuminata (E. A. Smith, 1915) |
| Mitrella moleculina (Duclos, 1840) [Extralimital] |
| Astyris bonariensis (Castellanos & Fernández, 1967) |
| Mazatlania cosentini (Philippi, 1836) |
| Columbella costa Simone, 2007 |
| Cosmioconcha dedonderi K. & D. Monsecour, 2006 |
| Costoanachis demanorum (Jong & Coomans, 1988) |
| Costoanachis elata (Reeve, 1859) [Dubious name] |
| Pseudamycla dermestoidea (Lamarck, 1822) [Extralimital] |
| Astyris diaphana A. E. Verrill, 1882 |
| Mitrella dichroa (Sowerby I, 1844) |
| Zafrona dicomata (Dall, 1889) |
| Zafrona diversa Espinosa, Ortea & Fernández-Garcés, 2007 |
| Columbella dysoni Reeve, 1858 |
| Anachis electona (Duclos, 1840) [Dubious name] |
| Astyris embusa Dall, 1927 |
| Astyris enida Dall, 1927 |
| Anachis coseli Díaz & Mittnacht, 1991 |
| Astyris crumena Dall, 1924 |
| Metulella columbellata (Dall, 1889) |
| 'Pleurotoma' atlantica E. A. Smith, 1890 [Dubious name] |
| Costoanachis avara (Say, 1822) |
| Costoanachis bacalladoi Espinosa, Ortea & Moro, 2008 |
| Columbella barbadensis d'Orbigny, 1847 [Dubious name] |
| Zafrona belkisae Espinosa & Ortea, 2007 |
| Nassarina bushiae (Dall, 1889) |
| Mitrella cabofrioensis Costa & de Souza, 2001 |
| Cosmioconcha calliglypta (Dall & Simpson, 1901) |
| Amphissa cancellata (Castellanos, 1979) |
| Parvanachis cancellata (Gaskoin, 1852) [Dubious name] |
| Anachis carloslirai P. M. S. Costa, 1996 |
| Costoanachis carmelita Espinosa, Ortea & Fernández-Garcés, 2007 |
| Costoanachis cascabulloi Espinosa & Ortea, 2004 |
| Costoanachis catenata (Sowerby I, 1844) |
| Astyris euribia Dall, 1927 |
| Costoanachis fenneli (Radwin, 1968) |
| Costoanachis floridana (Rehder, 1939) |
| Decipifus kristenseni Jong & Coomans, 1988 |
| Astyris labecula (Gould, 1862) |
| Rhombinella laevigata (Linnaeus, 1758) |
| Eurypyrene ledaluciae (Rios & Tostes, 1981) |
| Cotonopsis lindae (Petuch, 1988) |
| Zafrona lindae Petuch, 1992 |
| Costoanachis lineolata (Conrad, 1846) [Dubious name] |
| Astyris lunata (Say, 1826) |
| Anachis lyrata (Sowerby I, 1832) |
| Steironepion maculatum (C. B. Adams, 1850) |
| Cosmioconcha nana García, 2007 |
| Columbella mercatoria (Linnaeus, 1758) |
| Nassarina metabrunnea Dall & Simpson, 1901 |
| Steironepion minus (C. B. Adams, 1845) |
| Anachis jungi Faber, 2004 |
| Cotonopsis lafresnayi (Fischer & Bernardi, 1857) |
| Zafrona idalina (Duclos, 1840) |
| Columbellopsis fusiformis (d'Orbigny, 1842) |
| Strombina francesae J. Gibson-Smith, 1974 |
| Astyris frumarkernorum García, 2009 |
| Mazatlania fulgurata (Philippi, 1846) |
| Cosmioconcha geigeri García, 2006 |
| Astyris georgiana Dall, 1924 |
| Nassarina glypta (Bush, 1885) |
| Aesopus gracilis Faber, 2004 |
| Parvanachis isabellei (d'Orbigny, 1839) |
| Astyris guanahaniensis (Faber, 2004) |
| Suturoglypta iontha (Ravenel, 1861) |
| Cosmioconcha helenae (F. H. A. Costa, 1983) |
| Costoanachis hotessieriana (d'Orbigny, 1842) |
| Cosmioconcha humfreyi Jong & Coomans, 1988 |
| Mokumea mokum Faber, 2004 |
