altilabra May, 1911: synonym of Mesoginella altilabra (May, 1911) Marginella amabilis Redfield, 1852: synonym of Prunum amabile (Redfield, 1852) Marginella ambigua Bavay in Dautzenberg, 1912: synonym of Volvarina ampelusica Monterosato, 1906 Marginella ameliensis Tomlin, 1917: synonym of Volvarina ameliensis (Tomlin, 1917) Marginella amianta Dall, 1889: synonym of Granulina amianta (Dall, 1889) Marginella amoena Suter, 1908: synonym of Dentimargo amoena (Suter, 1908): synonym of Dentimargo amoenus (Suter, 1908) Marginella amphitrite W. H. Turton, 1932: synonym of Cystiscus aphanacme (Tomlin, 1918) (junior synonym) Marginella amphora Laseron, 1948: synonym of Cystiscus angasi (Crosse, 1870) Marginella amydrozona Melvill: synonym of Balanetta amydrozona (Melvill, 1906) Marginella amygdala Kiener, 1841: synonym of Prunum amygdalum (Kiener, 1841) Marginella ancilloides Turton, 1932: synonym of Marginella piperata Hinds, 1844 Marginella angasi Crosse, 1870: synonym of Cystiscus angasi (Crosse, 1870) Marginella anglica Leach, 1852: synonym of Trivia arctica (Pulteney, 1799) Marginella angolensis Odhner, 1923: synonym of Volvarina angolensis (Odhner, 1923) Marginella angustata Sowerby, 1846: synonym of Volvarina angustata (G.B. Sowerby, 1846) Marginella annulata Reeve, 1865: synonym of Prunum annulatum (Reeve, 1865) Marginella anticlea Dall, 1919: synonym of Dentimargo anticlea (Dall, 1919) Marginella anxia Hedley, 1909: synonym of Granulina anxia (Hedley, 1909) Marginella aphanacme Tomlin, 1918: synonym of Cystiscus aphanacme (Tomlin, 1918) Marginella aphanospira Tomlin, 1913: synonym of Plesiocystiscus aphanospira (Tomlin, 1913) Marginella apicina Menke, 1828: synonym of Prunum apicinum (Menke, 1828) Marginella asra Liltved & Millard, 1994: synonym of Marginella westhuizeni Massier, 1993 Marginella atractus Tomlin, 1918: synonym of Alaginella atracta (Tomlin, 1918) Marginella attenuata Weinkauff, 1879: synonym of Austroginella translucida (G. B. Sowerby II, 1846) Marginella attenuata Reeve, 1865: synonym of Volvarina attenuata (Reeve, 1865) Marginella augusta Thiele, 1925: synonym of Prunum augusta (Thiele, 1925) Marginella aupouria Powell, 1937: synonym of Mesoginella aupouria (Powell, 1937) Marginella aurata Bavay in Dautzenberg, 1912: synonym of Gibberula aurata (Bavay in Dautzenberg, 1912) Marginella aurelia Thiele, 1925: synonym of Alaginella zeyheri (Krauss, 1852) Marginella aureocincta Stearns, 1872: synonym of Dentimargo aureocinctus (Stearns, 1872) Marginella auriculata Ménard de la Groye, 1811: synonym of Ringicula auriculata (Ménard de la Groye, 1811) Marginella australis Hinds, 1844: synonym of Mesoginella australis (Hinds, 1844) Marginella avena Kiener, 1834: synonym of Volvarina avena (Kiener, 1834) Marginella avenacea auct.: synonym of Prunum bellulum (Dall, 1890) Marginella avenella Dall, 1881: synonym of Volvarina avenella (Dall, 1881) Marginella barnardi Tomlin, 1919: synonym of Gibberula differens (E. A. Smith, 1904) Marginella baudensis E. A. Smith, 1899: synonym of Protoginella lavigata (Brazier, 1877) Marginella