| Nominal Species (n = 271) | Present allocation (n = 265) | Ref. |
|---|---|---|
| Melanella abida Dall, 1927 | Melanella abida | 83435 |
| Eulima aciculata Pease, 1861 | Melanella aciculata | 87884 |
| Stilbe acuta Jeffreys, 1884 | Aclis acuta | 83435 |
| Melanella adiastalta Souza, Pimenta & Barros, 2021 | Melanella adiastalta | 3477 |
| Niso aeglees Bush, 1885 | Niso aeglees | 19 |
| Abyssoaclis alagoensis Barros et al., 2003 | Abyssoaclis alagoensis | 83435 |
| Strombiformis alaskensis Bartsch, 1917 | Strombiformis alaskensis | 19 |
| Melanella alayoi Espinosa, Ortea & Magaña, 2001 | Vitreolina alayoi | 83435 |
| Eulima alba Calkins, 1878 | Melanella conoidea | 75097 |
| Cythnia albida Carpenter, 1864 | Cythnia albida | 19 |
| Niso albida Dall, 1889 | Cythnia albida | 83435 |
| Strombiformis albus da Costa, 1778 | Melanella alba | 1056 |
| Strombiformis almo Bartsch, 1917 | Strombiformis almo | 19 |
| Eulima altimirai Nordsieck, 1977 | Eulima altimirai | 1056 |
| Eulima amblia Watson, 1883 | Eulima amblia | 3477 |
| Eulima amblytera Verrill & Bush, 1900 | Polygireulima amblytera | 83435 |
| Thyonicola americana Tikasingh, 1961 | Thyonicola americana | 3477 |
| Melanella anachorea Dall, 1927 | Melanella anachorea | 83435 |
| Melanella anapetes Souza, Pimenta & Barros, 2021 | Melanella anapetes | 3477 |
| Aclis angulata Smith, 1890 | Aclis angulata | 83435 |
| Eulima antarctica Strebel, 1908 | Melanella antarctica | 83435 |
| Vitreolina antiflexa Monterosato, 1884 | Vitreolina antiflexa | 1056 |
| Balcis arcuata Adams, 1850 | Melanella arcuata | 75097 |
| Eulima arcuata Adams, 1850 | Vitreolina arcuata | 83435 |
| Melanella arleyi Espinosa, Ortea & Magaña, 2001 | Melanella arleyi | 83435 |
| Ophiolamia armigeri Warén & Carney, 1981 | Ophiolamia armigeri | 83435 |
| Eulimostraca armonica Espinosa & Ortea, 2007 | Eulimostraca armonica | 83435 |
| Eulima atlantica Smith, 1890 | Eulima atlantica | 83435 |
| Aclis attenuans Jeffreys, 1883 | Aclis attenuans | 1056 |
| Eulima atypha Verrill & Bush, 1900 | Melanella atypha | 83435 |
| Strombiformis auricincta Abbott, 1958 | Eulima auricincta | 83435 |
| Strombiformis auricinctus Abbott, 1958 | Strombiformis auricinctus | 19 |
| Annulobalcis aurisflamma Simone & Martins, 1995 | Annulobalcis aurisflamma | 83435 |
| Scalenostoma babylonia Bartsch, 1912 | Scalenostoma babylonia | 19 |
| Hemiliostraca bahamondei Rehder, 1980 | Hemiliostraca bahamondei | 3477 |
| Melanella bakeri Bartsch, 1917 | Melanella bakeri | 19 |
| Sabinella bakeri Bartsch, 1917 | Sabinella bakeri | 19 |
| Pyramidelloides barbadensis Moolenbeek & Faber, 1992 | Pyramidelloides barbadensis | 83435 |
| Curveulima beneitoi Peñas & Rolán, 2006 | Curveulima beneitoi | 1056 |
| Melanella bermudezi Pilsbry & Aguayo, 1933 | Vitreolina bermudezi | 83435 |
| Melanella berryi Bartsch, 1917 | Melanella berryi | 19 |
| Eulima bifasciata D'Orbigny, 1842 | Eulima bifasciata | 19 |
| Strombiformis bifasciatus D'Orbigny, 1842 | Strombiformis bifasciatus | 19 |
| Eulima bilineata Alder, 1848 | Eulima bilineata | 3477 |
| Strombiformis bilineatus Alder, 1848 | Strombiformis bilineatus | 19 |
| Melanella boscheineni Engl, 2004 | Melanella boscheineni | 83435 |
| Hypermastus boschorum Warén, 1991 | Hypermastus boschorum | 3477 |
| Eulima breviuscula Dunker, 1875 | Melanella breviuscula | 83435 |
| Stylifer brychia Watson, 1883 | Pisolamia brychia | 83435 |
| Mucronalia bulimuloides Dall, 1927 | Mucronalia bulimuloides | 83435 |
| Sticteulima cabrali Souza, Pimenta & Barros, 2021 | Sticteulima cabrali | 3477 |
| Aclis californica Bartsch, 1927 | Aclis californica | 19 |
| Melanella californica Bartsch, 1917 | Melanella californica | 19 |
| Melanella callistemma Dall, 1927 | Melanella callistemma | 83435 |
| Sticteulima canopusensis Souza, Pimenta & Barros, 2021 | Sticteulima canopusensis | 3477 |
| Leiostraca carforti Rochebrune & Mabille, 1889 | Leiostraca carforti | 83435 |
| Scalenostoma carinatum Deshayes, 1863 | Scalenostoma carinatum | 3477 |
| Cingulina carinatus Mörch, 1876 | Pyramidelloides carinatus | 83435 |
| Eulima carolii Dall, 1889 | Melanella carolii | 83435 |
| Aclis carolinensis Bartsch, 1911 | Aclis carolinensis | 19 |
| Melanella catalinensis Bartsch, 1917 | Melanella catalinensis | 19 |
| Robillardia cernica Smith, 1889 | Robillardia cernica | 3477 |
| Eulima chascanon Watson, 1883 | Melanella chascanon | 83435 |
| Eulima chaunax Watson, 1883 | Melanella chaunax | 83435 |
| Eulima chionea Bouchet & Warén, 1986 | Eulima chionea | 83435 |
| Eulima chydaea Watson, 1883 | Melanella chydaea | 83435 |
| Eulima chyta Watson, 1883 | Eulima chyta | 83435 |
| Melanella cinca Dall, 1927 | Melanella cinca | 83435 |
| Niso circinata Dall, 1889 | Niso circinata | 83435 |
| Vitreolina colini Espinosa & Ortea, 2006 | Vitreolina colini | 83435 |
| Melanella columbiana Bartsch, 1917 | Melanella columbiana | 19 |
| Eulima compsa Verrill & Bush, 1900 | Melanella compsa | 83435 |
| Oceanida confluens Bouchet & Warén, 1986 | Oceanida confluens | 1056 |
| Eulima conica Adams, 1850 | Vitreolina conica | 83435 |
| Eulima conoidea Kurtz & Stimpson, 1851 | Melanella conoidea | 83435 |
| Aclis conula Dall, 1927 | Aclis conula | 19 |
| Melanella corrida Dall, 1927 | Melanella corrida | 83435 |
| Eulima cracentis Souza, Pimenta & Barros, 2021 | Eulima cracentis | 3477 |
| Diacolax cucumariae Mandahl-Barth, 1946 | Diacolax cucumariae | 83435 |
| Eulima cylindrata Watson, 1883 | Melanella cylindrata | 83435 |
| Aclis dalli Bartsch, 1911 | Aclis dalli | 19 |
| Goriella dalli Souza, 2022 | Goriella dalli | 3477 |
| Eulimostraca dalmata Espinosa & Ortea, 2007 | Eulimostraca dalmata | 83435 |
| Vitreolina devians Monterosato, 1884 | Curveulima devians | 1056 |
| Aclis didyma Smith, 1890 | Aclis didyma | 83435 |
| Fusceulima digitalis Hoffman & Engl, 2021 | Fusceulima digitalis | 3477 |
| Melanella dufresnii Bowdich, 1822 | Melanella dufresnii | 3477 |
| Helix eburnea Mühlfeld, 1824 | Melanella eburnea | 83435 |
| Jeffreysia edwardiensis Watson, 1880 | Crinolamia edwardiensis | 3477 |
| Aclis egregia Dall, 1889 | Aclis egregia | 19 |
| Strombiformis elata Dall, 1927 | Eulima elata | 83435 |
| Eulimostraca encalada Espinosa, Ortea & Magaña, 2006 | Eulimostraca encalada | 83435 |
| Eulima engonia Verrill & Bush, 1900 | Melanella engonia | 83435 |
| Aclis eolis Bartsch, 1947 | Aclis eolis | 19 |
| Eulima ephamilla Watson, 1883 | Eulima ephamilla | 83435 |
| Batheulima epixantha Simone, 2002 | Batheulima epixantha | 83435 |
| Trochostilifer eucidaricola Warén & Moolenbeek, 1989 | Trochostilifer eucidaricola | 83435 |
| Rissoa eulimoides Adams, 1850 | Melanella eulimoides | 83435 |
| Pulicicochlea faba Ponder & Gooding, 1978 | Pulicicochlea faba | 3477 |
| Oceanida faberi Jong & Coomans, 1988 | Oceanida faberi | 83435 |
| Eulima fasciata Watson, 1883 | Melanella fasciata | 83435 |
| Aclis fernamdinae Dall, 1927 | Aclis tenuis | 75097 |
| Melanella fernandinae Dall, 1927 | Melanella fernandinae | 83435 |
| Aclis floridana Bartsch, 1911 | Aclis floridana | 83435 |
| Halielloides fragilis Bouchet & Warén, 1986 | Halielloides fragilis | 1056 |
| Eulima fulvocincta Adams, 1850 | Eulima fulvocincta | 19 |
| Eulima fuscescens Smith, 1890 | Eulima fuscescens | 83435 |
| Eulima fuscoapicata Jeffreys, 1884 | Batheulima fuscoapicata | 83435 |
| Ophieulima fuscoapicata Warén, 1981 | Ophieulima fuscoapicata | 3477 |
| Eulima fuscopunctata Smith, 1890 | Melanella fuscopunctata | 83435 |
| Eulima fuscozonata Bouchet & Warén, 1986 | Eulima fuscozonata | 1056 |
| Eulima fusus Dall, 1889 | Eulima fusus | 83435 |
| Aclis georgiana Dall, 1927 | Aclis georgiana | 19 |
| Eulima germana Smith, 1890 | Eulima germana | 83435 |
| Crinophtheiros giustii Gaglini, 1991 | Crinophtheiros giustii | 1056 |
| Pyramidelloides glaber Faber, 1990 | Pyramidelloides glaber | 83435 |
| Melanella glypta Bouchet & Warén, 1986 | Melanella glypta | 1056 |
| Eulima gomphus Watson, 1883 | Melanella gomphus | 83435 |
| Luetzenia goodingi Rehder, 1980 | Robillardia cernica | 3477 |
| Eulima gracilis Adams, 1850 | Melanella gracilis | 83435 |
| Eulima gracillima Sowerby II, 1865 | Eulima gracillima | 83435 |
| Oceanida graduata de Folin, 1870 | Oceanida graduata | 19 |
| Melanella grippi Bartsch, 1917 | Melanella grippi | 19 |
| Melanella guenteri Engl, 2004 | Melanella guenteri | 83435 |
| Eulima guildingii Adams, 1854 | Melanella guildingii | 83435 |
| Concavibalcis haterumaensis Takano, Tsuzuki & Kano, 2022 | Concavibalcis haterumaensis | 3477 |
| Eulima hebes Watson, 1883 | Melanella hebes | 83435 |
| Eulima hemphillii Dall, 1884 | Microeulima hemphillii | 83435 |
| Aclis hendersoni Dall, 1927 | Aclis hendersoni | 19 |
| Niso hendersoni Bartsch, 1953 | Niso hendersoni | 19 |
| Eulima hians Watson, 1883 | Melanella hians | 83435 |
| Niso hipolitensis Bartsch, 1917 | Niso hipolitensis | 19 |
| Megadenus holothuricola Rosen, 1910 | Megadenus holothuricola | 83435 |
| Aclis hyalina Watson, 1881 | Aclis hyalina | 83435 |
| Eulima hyalina Watson, 1883 | Melanella hyalina | 83435 |
| Aclis hypergonia Scwengel & Mcginty, 1942 | Aclis hendersoni | 75097 |
| Eulima hypsela Verrill & Bush, 1900 | Melanella hypsela | 83435 |
| Aclis immaculata Dall, 1927 | Aclis immaculata | 83435 |
| Alaba incolorata Thiele, 1912 | Hemiaclis incolorata | 83435 |
| Eulimostraca indomatta Simone & Birman, 2007 | Eulimostraca indomatta | 83435 |
| Oceanida inglei Lyons, 1978 | Oceanida inglei | 19 |
| Melanella insculpta Bouchet & Warén, 1986 | Melanella insculpta | 83435 |
| Eulima insignis Dautzenberg & Fischer, 1896 | Eulitoma insignis | 83435 |
| Balcis intermedia Cantraine, 1835 | Melanella intermedia | 75097 |
| Melanella ira Dall, 1927 | Melanella ira | 83435 |
| Balcis jamaicensis Adams, 1845 | Melanella jamaicensis | 75097 |
| Eulima jamaicensis Adams, 1845 | Melanella jamaicensis | 83435 |
| Asterophila japonica Randall & Heath, 1912 | Asterophila japonica | 19 |
| Melanella junieri Espinosa, Ortea & Magaña, 2006 | Melanella junieri | 83435 |
| Aclis kanela Absalao, 2009 | Aclis kanela | 83435 |
| Melanella karolinae Engl, 2006 | Melanella karolinae | 83435 |
| Hemiaclis katrinae Engl, 2006 | Hemiaclis katrinae | 83435 |
| Fusceulima keppensi Engl & Swinnen, 2021 | Fusceulima keppensi | 3477 |
| Aclis kermadecensis Knudsen, 1964 | Crinolamia kermadecensis | 3477 |
| Melanella kermadecensis Oliver, 1915 | Sticteulima kermadecensis | 3477 |
| Eulima lacca Kuroda & Habe, 1971 | Eulima lacca | 3477 |
| Rectilabrum lanceolatum Bouchet & Warén, 1986 | Rectilabrum lanceolatum | 83435 |
| Melanella laseroni Hedley, 1916 | Melanella laseroni | 3477 |
| Melanella lastra Bartsch, 1917 | Melanella lastra | 19 |
| Aclis lata Dall, 1889 | Aclis lata | 19 |
| Eulima leptozona Dautzenberg & Fischer, 1896 | Eulima leptozona | 1056 |
| Melanella letsonae Pilsbry, 1917 | Melanella letsonae | 3477 |
| Vitreolina levantina Oliverio, Buzzurro & Villa, 1994 | Vitreolina levantina | 1056 |
| Aclis limata Dall, 1927 | Aclis limata | 83435 |
| Niso lomana Bartsch, 1917 | Niso lomana | 19 |
| Entocolax ludwigii Voigt, 1888 | Entocolax ludwigii | 19 |
| Batheulima lutescens Simone, 2002 | Batheulima lutescens | 83435 |
| Melanella macra Bartsch, 1917 | Melanella macra | 19 |
| Aclis macrostoma Barros, Lima & Francisco, 2007 | Aclis macrostoma | 83435 |
| Mucronalia mammillata Dall, 1927 | Mucronalia mammillata | 83435 |
| Melanella maracuya Espinosa, Ortea & Magaña, 2001 | Vitreolina maracuya | 83435 |
| Hemiaclis marguerita Bartsch, 1947 | Aclis marguerita | 83435 |
| Melanella marviva Espinosa, Ortea & Magaña, 2006 | Melanella marviva | 83435 |
| Eulima masseneti Folin, 1867 | Eulima masseneti | 83435 |
| Hypermastus matericola Warén & Norris, 1994 | Hypermastus matericola | 3116 |
| Niso microforis Dall, 1927 | Niso microforis | 83435 |
| Melanella microsculpta Bouchet & Warén, 1986 | Melanella microsculpta | 1056 |
| Rosenia minibulla Olsson & McGinty, 1958 | Monogamus minibulla | 83435 |
| Stilifer minima Dall, 1927 | Ophieulima minima | 83435 |
| Pelseneeria minor Koehler & Vaney, 1908 | Pelseneeria minor | 1056 |
| Stilifer minuta Dall, 1927 | Fusceulima minuta | 83435 |
| Entoconcha mirabilis Müller, 1852 | Entoconcha mirabilis | 19 |
| Auriculigerina miranda Dautzenberg, 1925 | Auriculigerina miranda | 1056 |
| Melanella montereyensis Bartsch, 1917 | Melanella montereyensis | 19 |
| Eulima mulata Rios & Absalao, 1990 | Eulima mulata | 83435 |
| Pyramidelloides multicostatus Faber, 1990 | Pyramidelloides multicostatus | 83435 |
| Bathycrinicola nacraensis Peñas & Giribet, 2003 | Bathycrinicola nacraensis | 1056 |
| Melanella nilae Engl, 2006 | Melanella nilae | 83435 |
| Aclis nucleata Dall, 1889 | Aclis nucleata | 19 |
| Helix nutans Mühlfeld, 1824 | Vitreobalcis nutans | 83435 |
| Melanella oldroydae Bartsch, 1917 | Melanella oldroydae | 19 |
| Eulima oleacea Kurtz & Stimpson, 1851 | Melanella oleacea | 83435 |
| Eulima onychina Folin, 1867 | Eulima onychina | 83435 |
| Fuscapex ophioacanthicola Warén, 1981 | Fuscapex ophioacanthicola | 3477 |
| Melanella ophiodon Dall, 1927 | Melanella ophiodon | 83435 |
| Punctifera ophiomoerae Warén, 1981 | Punctifera ophiomoerae | 3477 |
| Melanella orphanensis Clarke, 1974 | Melanella orphanensis | 19 |
| Teretianax pagoda Powell, 1926 | Pyramidelloides pagoda | 3477 |
| Melanella paraabida Souza, Pimenta & Barros, 2021 | Melanella paraabida | 3477 |
| Melanella parallela Dall, 1927 | Melanella parallela | 83435 |
| Comenteroxenos parastichopoli Tikasingh, 1961 | Enteroxenos parastichopoli | 3477 |
| Eulima patula Dall & Simpson, 1901 | Eulima patula | 19 |
| Aclis pendata Dall, 1927 | Aclis pendata | 19 |
| Melanella peninsularis Bartsch, 1917 | Melanella peninsularis | 19 |
| Niso penipauliasi Cossignani & Lorenz, 2022 | Niso penipauliasi | 3477 |
| Melanella penna Dall, 1927 | Melanella penna | 83435 |
| Melanella perplexa Oliver, 1915 | Melanella perplexa | 3477 |
| Scalenostoma perrierae Barros, Padovan & Santos, 2001 | Scalenostoma perrierae | 83435 |
| Subularia perspicua Oliver, 1915 | Hemiliostraca perspicua | 3477 |
| Eulima perversa Bush, 1909 | Melanella perversa | 83435 |
| Eulimacrostoma phorcys Souza, Pimenta & Barros, 2021 | Eulimacrostoma phorcys | 3477 |
| Melanella pisinna Rehder, 1980 | Melanella pisinna | 3477 |
| Stilifer polaris Hedley, 1916 | Stilapex polaris | 83435 |
| Niso portoricensis Dall & Simpson, 1901 | Niso portoricensis | 83435 |
| Annulobalcis procera Simone, 2002 | Annulobalcis procera | 83435 |
| Fusceulima projectilabrum Bouchet & Warén, 1986 | Fusceulima projectilabrum | 83435 |
| Eulima psila Watson, 1883 | Melanella psila | 83435 |
| Aclis pyramida Dall, 1927 | Aclis pyramida | 19 |
| Chileutomia raveggii Gofas & Romani, 2021 | Chileutomia raveggii | 3477 |
| Eulima raymondi Rivers, 1904 | Eulima raymondi | 19 |
| Eulima rectiuscula Dall, 1890 | Eulima rectiuscula | 83435 |
| Aclis rhyssa Dall, 1927 | Aclis rhyssa | 19 |
| Fusceulima robini Engl & Swinnen, 2021 | Fusceulima robini | 3477 |
| Aclis rushi Bartsch, 1911 | Aclis rushi | 19 |
| Balcis rutila Carpenter, 1864 | Melanella rutila | 75097 |
| Melanella salvadori Castellanos, Rolán & Bartolotta, 1987 | Melanella salvadori | 83435 |
| Melanella sankurieae Engl, 2004 | Melanella sankurieae | 83435 |
| Aclis sarissa Watson, 1881 | Aclis sarissa | 83435 |
| Eulima sarissa Watson, 1883 | Melanella sarissa | 83435 |
| Aclis sarsi Dautzenberg & H. Fischer, 1912 | Aclis sarsi | 3477 |
| Eulima sarsi Bush, 1909 | Melanella sarsi | 83435 |
| Concavibalcis scalaris Warén, 1980 | Concavibalcis scalaris | 3477 |
| Entocolax schwanwitschi Heding, 1938 | Entocolax schwanwitschi | 83435 |
| Aclis shepardiana Dall, 1919 | Aclis shepardiana | 19 |
| Eulima shoplandi Melvill, 1898 | Parvioris shoplandi | 3477 |
| Aclis simillima Smith, 1890 | Aclis simillima | 83435 |
| Megadenus smithi González-Vallejo & Amador-Carrillo, 2021 | Megadenus smithi | 3477 |
| Eulima solitaria Smith, 1915 | Melanella solitaria | 83435 |
| Melanella spinosa Oliver, 1915 | Melanella spinosa | 3477 |
| Melanella stamina Dall, 1927 | Melanella stamina | 83435 |
| Ersilia stancyki Waren, 1980 | Ersilia stancyki | 19 |
| Eulima stenostoma Jeffreys, 1858 | Haliella stenostoma | 83435 |
| Aclis stilifer Dall, 1927 | Aclis stilifer | 19 |
| Stylifer stimpsonii Verrill, 1872 | Pelseneeria stimpsonii | 83435 |
| Aclis striata Verrill, 1880 | Aclis striata | 19 |
| Volutaxiella subantarctica Strebel, 1908 | Melanella subantarctica | 83435 |
| Eulima subcarinata d'Orbigny, 1841 | Eulimostraca subcarinata | 83435 |
| Eulima subconica Smith, 1890 | Vitreolina subconica | 83435 |
| Stylifer subulatum Broderip, 1832 | Scalenostoma subulatum | 83435 |
| Pelseneeria sudamericana Pastorino & Zelaya, 2001 | Pelseneeria sudamericana | 83435 |
| Scalenostoma suteri Oliver, 1915 | Pyramidelloides suteri | 3477 |
| Melanella tacomaensis Bartsch, 1917 | Melanella tacomaensis | 19 |
| Aclis tenuis Verrill, 1882 | Aclis tenuis | 19 |
| Icuncula terebra Powell, 1930 | Aclis terebra | 3477 |
| Niso tricolor Dall, 1889 | Niso tricolor | 19 |
| Aclis trilineata Watson, 1897 | Aclis trilineata | 1056 |
| Aclis triliratus Folin, 1873 | Pyramidelloides triliratus | 83435 |
| Eulima troglodytes Thiele, 1925 | Sabinella troglodytes | 83435 |
| Eulima tumidula Thiele, 1912 | Bathycrinicola tumidula | 83435 |
| Eulima varians Sowerby I, 1834 | Eulima varians | 83435 |
| Niso venosa Sowerby III, 1895 | Niso venosa | 3477 |
| Aclis verrilli Bartsch, 1911 | Aclis verrilli | 19 |
| Eulima verrilliana Bush, 1909 | Halielloides verrilliana | 83435 |
| Melanella versa Dall, 1927 | Melanella versa | 83435 |
| Aclis walleri Jeffreys, 1867 | Aclis walleri | 19 |
| Vitreolina wareni Rehder, 1980 | Vitreolina wareni | 3477 |
| Aclis watsoni Barros, Lima & Francisco, 2007 | Aclis watsoni | 83435 |
| Fusceulima watsoni Souza, Pimenta & Barros, 2021 | Fusceulima watsoni | 3477 |
| Coenaculum weerdtae Moolenbeek & Faber, 1992 | Coenaculum weerdtae | 3477 |
| Nanobalcis worsfoldi Waren, 1990 | Nanobalcis worsfoldi | 19 |
| Melanella zugnigae Espinosa, Ortea & Magaña, 2001 | Vitreolina zugnigae | 83435 |