• Acicularia lubrica Monterosato, 1890 accepted as Melanella lubrica (Monterosato, 1890)
• Acicularia monterosatoi Monterosato, 1890 accepted as Melanella monterosatoi (Monterosato, 1890)
• Acicularia pernula Monterosato, 1890 accepted as Melanella pernula (Monterosato, 1890)
• Acicularia translucens Monterosato, 1890 accepted as Melanella translucens (Monterosato, 1890)
• Acinopsis cancellata (da Costa, 1778) accepted as Alvania cancellata (da Costa, 1778)
• Acinopsis hirta Monterosato, 1884 accepted as Alvania hirta (Monterosato, 1884)
• Acinopsis subcrenulata (Bucquoy, Dautzenberg & Dollfus, 1884) accepted as Alvania subcrenulata (Bucquoy, Dautzenberg & Dollfus, 1884)
• Acinopsis venter F. Nordsieck, 1972 accepted as Alvania cancellata (da Costa, 1778)
• Acinus hispidulus Monterosato, 1884 accepted as Alvania hispidula (Monterosato, 1884)
• Aclis acuta (Jeffreys, 1884) accepted as Parastilbe acuta (Jeffreys, 1884)
• Aclis ascaris (W. Turton, 1819)
• Aclis attenuans Jeffreys, 1883
• Aclis carolinensis Bartsch, 1911 accepted as Hemiaclis carolinensis (Bartsch, 1911)
• Aclis farolita F. Nordsieck, 1969 accepted as Graphis albida (Kanmacher, 1798)
• Aclis gulsonae (W. Clark, 1850)
• Aclis gulsonae var. tenuicula Jeffreys, 1867 accepted as Aclis gulsonae (W. Clark, 1850)
• Aclis jeffreysii Tryon, 1887 accepted as Graphis striata (Jeffreys, 1884)
• Aclis lineata Monterosato, 1869 accepted as Fusceulima lineata (Monterosato, 1869)
• Aclis minor (T. Brown, 1827)
• Aclis mizon R. B. Watson, 1881 accepted as Costaclis mizon (R. B. Watson, 1881)
• Aclis muchia Locard, 1896 accepted as Costaclis mizon (R. B. Watson, 1881)
• Aclis sarsi Dautzenberg & H. Fischer, 1912
• Aclis striata A. E. Verrill, 1880 accepted as Odostomia striata (A. E. Verrill, 1880)
• Aclis tenuis A. E. Verrill, 1882
• Aclis tricarinata R. B. Watson, 1897 accepted as Pseudoscilla bilirata (de Folin, 1870)
• Aclis trilineata R. B. Watson, 1897
• Aclis ventrosa Friele, 1876 accepted as Hemiaclis ventrosa (Friele, 1876)
• Aclis ventrosa var. minor Friele, 1876 accepted as Hemiaclis ventrosa (Friele, 1876)
• Aclis verduini van Aartsen, Menkhorst & Gittenberger, 1984 accepted as Aclis trilineata R. B. Watson, 1897
• Aclis verrilli Bartsch, 1911 accepted as Aclis tenuis A. E. Verrill, 1882
• Aclis vitrea R. B. Watson, 1897
• Aclis walleri Jeffreys, 1867
• Aclis walleri var. carinata Norman, 1879 accepted as Aclis sarsi Dautzenberg & H. Fischer, 1912
• Acrochalix callosa Bouchet & Warén, 1986
• Acrybia glacialis Thorson, 1951 accepted as Bulbus smithii T. Brown, 1839
• Adeorbis exquisitus Jeffreys, 1883 accepted as Tjaernoeia exquisita (Jeffreys, 1883)
• Adeorbis fragilis Sars G.O., 1878 accepted as Rugulina fragilis (G.O. Sars, 1878)
• Adeorbis imperspicuus Chaster, 1895 accepted as Tjaernoeia exquisita (Jeffreys, 1883)
• Adeorbis imperspicuus Monterosato, 1875 accepted as Tjaernoeia exquisita (Jeffreys, 1883)
• Adeorbis imperspicuus var. elegantula Chaster, 1895 accepted as Tjaernoeia exquisita (Jeffreys, 1883)
• Adeorbis seguenzai [sic] accepted as Megalomphalus disciformis (Granata-Grillo, 1877)
• Adeorbis seguenzianus Tryon, 1888 accepted as Megalomphalus disciformis (Granata-Grillo, 1877)
• Adeorbis supranitidus Wood S., 1848 accepted as Circulus supranitidus (Wood S., 1848)
• Adeorbis tricarinatus S. V. Wood, 1848 † accepted as Circulus striatus (Philippi, 1836)
• Adeorbis umbilicata Locard, 1897 accepted as Xyloskenea naticiformis (Jeffreys, 1883)
• Adeorbis unisulcatus Chaster, 1897 accepted as Tjaernoeia unisulcata (Chaster, 1897)
• Afrocanidea gemma Connolly, 1929 accepted as Gutturnium muricinum (Röding, 1798)
• Akibumia orientalis (Schepman, 1909)
• Albertisia punica Issel, 1880 accepted as Truncatella subcylindrica (Linnaeus, 1767)
• Alcidia spinosa Monterosato, 1890 accepted as Alvania spinosa (Monterosato, 1890)
• Alvania (Alvinia) clathrella Seguenza L., 1903 accepted as Alvania clathrella L. Seguenza, 1903
• Alvania (Crisilla) chiarellii Cecalupo & Quadri, 1995 accepted as Crisilla chiarellii (Cecalupo & Quadri, 1995)
• Alvania (Crisilla) marioni Fasulo & Gaglini, 1987 accepted as Crisilla marioni (Fasulo & Gaglini, 1987)
• Alvania (Crisilla) postrema Gofas, 1990 accepted as Crisilla postrema (Gofas, 1990)
• Alvania (Moniziella) verduini van Aartsen, 1983 accepted as Manzonia vigoensis (Rolán, 1983)
• Alvania aartseni Verduin, 1986
• Alvania abstersa van der Linden & van Aartsen, 1994
• Alvania abyssicola (Forbes, 1850) accepted as Alvania testae (Aradas & Maggiore, 1844)
• Alvania adiaphoros Bouchet & Warén, 1993
• Alvania adinogramma Bouchet & Warén, 1993
• Alvania aeoliae Palazzi, 1988
• Alvania alboranensis Peñas & Rolán, 2006
• Alvania algeriana (Monterosato, 1877)
• Alvania aliceae Amati, 2014
• Alvania altenai van Aartsen, Menkhorst & Gittenberger, 1984 accepted as Alvania tomentosa (Pallary, 1920)
• Alvania amatii Oliverio, 1986
• Alvania angioyi van Aartsen, 1982
• Alvania angularis Warén, 1996
• Alvania annetteae Amati, Danzelle & Devauchelle, 2018
• Alvania areolata (Stimpson, 1851) accepted as Tachyrhynchus reticulatus (Mighels & C. B. Adams, 1842)
• Alvania arguta Locard & Caziot, 1900 accepted as Alvania lanciae (Calcara, 1845)
• Alvania aspera (Philippi, 1844)
• Alvania asperella Granata-Grillo, 1877 accepted as Alvania sororcula Granata-Grillo, 1877
• Alvania aurantiaca (R. B. Watson, 1873)
• Alvania balearica J. D. Oliver & Templado, 2009
• Alvania bartolinorum Amati & Smriglio, 2019
• Alvania basteriae (Moolenbeek & Faber, 1986) accepted as Crisilla basteriae (Moolenbeek & Faber, 1986)
• Alvania beani [sic] accepted as Alvania beanii (Hanley in Thorpe, 1844)
• Alvania beanii (Hanley in Thorpe, 1844)
• Alvania beniamina (Monterosato, 1884) accepted as Crisilla beniamina (Monterosato, 1884)
• Alvania bicingulata (G. Seguenza, 1876) †
• Alvania boria Risso, 1826 accepted as Alvania discors (T. Brown, 1818)
• Alvania bozcaadensis Tisselli & Giunchi, 2013
• Alvania brocchii Weinkauff, 1868
• Alvania bryanti C. W. Johnson, 1926 accepted as Frigidoalvania cruenta (Odhner, 1915)
• Alvania calathus (Forbes & Hanley, 1850) accepted as Alvania beanii (Hanley in Thorpe, 1844)
• Alvania campanii Tisselli & Giunchi, 2013
• Alvania canariensis (d'Orbigny, 1840)
• Alvania cancapae Bouchet & Warén, 1993
• Alvania cancellata (da Costa, 1778)
• Alvania cancellina Locard, 1891 accepted as Alvania cancellata (da Costa, 1778)
• Alvania capuleti Oberling, 1970 accepted as Alvania lineata Risso, 1826
• Alvania carinata (da Costa, 1778)
• Alvania castanea (Møller, 1842) accepted as Boreocingula castanea (Møller, 1842)
• Alvania castanea var. alaskana Dall, 1887 accepted as Onoba mighelsii (Stimpson, 1851)
• Alvania cimex (Linnaeus, 1758)
• Alvania cimicina Locard, 1886 accepted as Alvania cimex (Linnaeus, 1758)
• Alvania cimicoides (Forbes, 1844)
• Alvania cingulata (Philippi, 1836) accepted as Alvania mamillata Risso, 1826
• Alvania clarae Nofroni & Pizzini, 1991