| Nominal Species (n = 327) | Present allocation (n = 314) | Ref. |
|---|---|---|
| Alvania aartseni Verduin, 1986 | Alvania aartseni | 1056 |
| Rissoa aartseni Verduin, 1985 | Rissoa aartseni | 1056 |
| Schwartziella abacocubensis Espinosa & Ortea, 2002 | Schwartziella abacocubensis | 83435 |
| Trophon abyssorum Verrill, 1885 | Trophon abyssorum | 83435 |
| Cingula aculeus Gould, 1841 | Onoba aculeus | 83435 |
| Alvania acutelirata Carpenter, 1866 | Alvania compacta | 75097 |
| Rissoa acuticostata Dall, 1889 | Benthonellania acuticostata | 83435 |
| Rissoa aedonis Watson, 1886 | Onoba aedonis | 83435 |
| Alvania aeoliae Palazzi, 1988 | Alvania aeoliae | 1056 |
| Rissoa aequa Smith, 1890 | Cingula aequa | 83435 |
| Alvania aequisculpta Keep, 1887 | Alvania aequisculpta | 19 |
| Rissoa agapeta Smith, 1890 | Cingula agapeta | 83435 |
| Alvania alaskana Dall, 1886 | Alvania alaskana | 19 |
| Cingula alaskana Bartsch, 1912 | Cingula alaskana | 19 |
| Alvania albachiarae Perugia, 2021 | Alvania albachiarae | 3477 |
| Alvania alboranensis Peñas & Rolán, 2006 | Alvania alboranensis | 1056 |
| Cingula aleutica Dall, 1886 | Cingula aleutica | 19 |
| Onoba algida Ponder & Worsfold, 1994 | Onoba algida | 83435 |
| Benthonellania alis Amati, Di Giulio & Oliverio, 2022 | Benthonellania alis | 3477 |
| Alvania almo Bartsch, 1911 | Alvania almo | 19 |
| Rissoa alvearium Watson, 1886 | Cingula alvearium | 83435 |
| Alvania amatii Oliverio, 1986 | Alvania amatii | 1056 |
| Parashiela ambulata Laseron, 1956 | Parashiela ambulata | 3477 |
| Rissoa americana Friele, 1886 | Alvania brychia | 75097 |
| Onoba amissa Ponder & Worsfold, 1994 | Onoba amissa | 83435 |
| Crisilla amphiglypha Bouchet & Warén, 1993 | Crisilla amphiglypha | 1056 |
| Rissoia anderssoni Strebel, 1908 | Onoba anderssoni | 83435 |
| Alvania areolata Stimpson, 1851 | Alvania areolata | 19 |
| Alvania arubensis Jong & Coomans, 1988 | Alvania arubensis | 83435 |
| Plagyostila asturiana Fischer, 1872 | Plagyostila asturiana | 1056 |
| Rissoa atomus Smith, 1890 | Rissoa atomus | 83435 |
| Rissoa auberiana d'Orbigny, 1842 | Alvania auberiana | 83435 |
| Rissoa auriformis Pallary, 1904 | Rissoa auriformis | 1056 |
| Rissoa australis Watson, 1886 | Powellisetia australis | 3446 |
| Pusillina averni Ponder & Worsfold, 1994 | Pusillina averni | 83435 |
| Crisilla avilai Hoffman & Freiwald, 2021 | Crisilla avilai | 3477 |
| Pseudosetia azorica Bouchet & Warén, 1993 | Pseudosetia azorica | 83435 |
| Alvania bakeri Bartsch, 1910 | Alvania bakeri | 19 |
| Alvania balearica Oliver & Templado, 2009 | Alvania balearica | 3477 |
| Alvania bartolomensis Bartsch, 1917 | Alvania bartolomensis | 19 |
| Benthonella basistriata Amati, Di Giulio & Oliverio, 2022 | Benthonella basistriata | 3477 |
| Parashiela beetsi Ladd, 1966 | Parashiela ambulata | 3477 |
| Alvania bermudensis Faber & Moolenbeek, 1987 | Alvania bermudensis | 83435 |
| Rissoina bermudezi Aguayo & Rehder, 1936 | Folinia bermudezi | 83435 |
| Nobolira bollonsi Powell, 1930 | Attenuata bollonsi | 3477 |
| Benthonella boucheti Amati, Di Giulio & Oliverio, 2022 | Benthonella boucheti | 3477 |
| Rissoina bouryi Desjardin, 1949 | Schwartziella bouryi | 83435 |
| Benthonellania bouteti Amati, Di Giulio & Oliverio, 2022 | Benthonellania bouteti | 3477 |
| Rissoa brachia Watson, 1886 | Onoba brachia | 83435 |
| Rissoa browniana d'Orbigny, 1842 | Zebina browniana | 83435 |
| Cingula bryanti Johnson, 1926 | Alvania brychia | 75097 |
| Cingula brychia Verrill, 1884 | Frigidoalvania brychia | 83435 |
| Turbo bryerea Montagu, 1803 | Schwartziella bryerea | 83435 |
| Alvania burrardensis Bartsch, 1921 | Alvania burrardensis | 19 |
| Rissoa campta Dall, 1927 | Alvania campta | 83435 |
| Amaurella canaliculatum Smith, 1890 | Microstelma canaliculatum | 83435 |
| Rissoa candidissima Webster, 1905 | Onoba kermadecensis | 89036 |
| Rissoa candidissima Webster, 1905 | Onoba candidissima | 89395 |
| Rissoia candidissima Webster, 1905 | Onoba candidissima | 89395 |
| Rissoa canonica Dall, 1927 | Alvania canonica | 83435 |
| Rissoa caribaea d'Orbigny, 1842 | Simulamerelina caribaea | 83435 |
| Alvania carinata Mighels & Adams, 1842 | Alvania carinata | 19 |
| Alvania castanea Moller, 1842 | Boreocingula castanea | 75097 |
| Rissoa castanea Möller, 1842 | Boreocingula castanea | 83435 |
| Alvania castanella Dall, 1887 | Alvania castanella | 83435 |
| Rissoa catesbyana d'Orbigny, 1842 | Schwartziella catesbyana | 83435 |
| Onoba cerinella Dall, 1887 | Onoba cerinella | 19 |
| Eulimella chariessa Verrill, 1884 | Melanella chariessa | 83435 |
| Isselia chiltoni Oliver, 1914 | Stosicia chiltoni | 3477 |
| Alvania chiriquiensis Olsson & McGinty, 1958 | Alvania chiriquiensis | 19 |
| Cithna cingulatum Verrill, 1884 | Haloceras cingulatum | 83435 |
| Alvania claudioi Buzzurro & Landini, 2007 | Alvania claudioi | 1056 |
| Alvania colombiana Romer & Moore, 1988 | Alvania colombiana | 83435 |
| Alvania colossophilus Oberling, 1970 | Alvania colossophilus | 3477 |
| Pleurotoma columbella Dall, 1881 | Microstelma columbella | 83435 |
| Rissoa columna Pelseneer, 1903 | Onoba kergueleni | 3446 |
| Benthonella communis Amati, Di Giulio & Oliverio, 2022 | Benthonella communis | 3477 |
| Merelina compacta Powell, 1927 | Merelina compacta | 89401 |
| Rissoa compsa Smith, 1890 | Cingula compsa | 83435 |
| Rissoina congenita Smith, 1890 | Schwartziella congenita | 83435 |
| Cingula conica Adams, 1850 | Cingula conica | 83435 |
| Alvania consociella Monterosato, 1884 | Alvania consociella | 1056 |
| Anabathron contabulata Frauenfeld, 1867 | Anabathron contabulata | 19 |
| Subonoba contigua Powell, 1958 | Onoba gelida | 3446 |
| Alvania contrerasi Jordan, 1909 | Alvania contrerasi | 19 |
| Zebina cooperi Oliver, 1915 | Zebina bidentata | 3204 |
| Alvania corona Nordsieck, 1972 | Alvania corona | 1056 |
| Benthonellania coronata Absalao & Santos, 2004 | Benthonellania coronata | 83435 |
| Promerelina coronata Powell, 1926 | Merelina coronata | 3477 |
| Alvania cosmia Bartsch, 1911 | Alvania cosmia | 19 |
| Onoba crassicordata Worsfold, Avern & Ponder, 1993 | Onoba crassicordata | 83435 |
| Merelina crassula Rehder, 1980 | Manzonia crassula | 3477 |
| Rissoa cretacea Kurtz, 1860 | Rissoa cretacea | 83435 |
| Alvania cruenta Odhner, 1915 | Frigidoalvania cruenta | 3477 |
| Rissoa cruzi Castellanos & Fernández, 1974 | Onoba cruzi | 83435 |
| Alvania curacaoensis Jong & Coomans, 1988 | Alvania curacaoensis | 83435 |
| Rissoa curta Dall, 1927 | Rissoa curta | 19 |
| Alvania dalli Bartsch, 1927 | Alvania dalli | 19 |
| Alvania dalmatica Buzzurro & Prkic, 2007 | Alvania dalmatica | 1056 |
| Alvania datchaensis Amati & Oliverio, 1987 | Alvania datchaensis | 1056 |
| Alvania deboeri Jong & Coomans, 1988 | Alvania deboeri | 83435 |
| Alvania debruynei Faber & Moolenbeek, 2004 | Alvania debruynei | 83435 |
| Rissoa decorata Philippi, 1846 | Rissoa decorata | 1056 |
| Alvania dejongi Faber & Moolenbeek, 2004 | Alvania dejongi | 3477 |
| Onoba delecta Ponder, 1983 | Onoba delecta | 83435 |
| Rissoa deliciosa Jeffreys, 1884 | Alvania deliciosa | 83435 |
| Peringiella denticulata Ponder, 1985 | Peringiella denticulata | 1056 |
| Rissoia deserta Smith, 1907 | Powellisetia deserta | 83435 |
| Alvania dianiensis Oliverio, 1988 | Alvania dianiensis | 1056 |
| Rissoa didyma Watson, 1886 | Simulamerelina didyma | 83435 |
| Crisilla didyme Amati & Oliverio, 2020 | Crisilla didyme | 3477 |
| Onoba dimassai Amati & Nofroni, 1991 | Onoba dimassai | 1056 |
| Alvania dinora Bartsch, 1917 | Alvania dinora | 19 |
| Alvania dipacoi Giusti Fr. & Nofroni, 1989 | Alvania dipacoi | 1056 |
| Alvania disparilis Monterosato, 1890 | Alvania disparilis | 1056 |
| Benthonellania donmoorei Moolenbeek & Faber, 1991 | Benthonellania donmoorei | 83435 |
| Amphithalamus dysbatus Pilsbry & McGinty, 1949 | Floridiscrobs dysbatus | 83435 |
| Alvania elisae Margelli, 2001 | Alvania elisae | 1056 |
| Rissoa emaciata Mörch, 1876 | Alvania emaciata | 83435 |
| Rissoa epima Dall & Simpson, 1901 | Manzonia epima | 83435 |
| Onoba erugata Ponder & Worsfold, 1994 | Onoba erugata | 83435 |
| Alvania exarata Stimpson, 1851 | Alvania exarata | 19 |
| Rissoa exarata Stimpson, 1851 | Onoba exarata | 83435 |
| Alvania faberi Jong & Coomans, 1988 | Alvania faberi | 3477 |
| Powellisetia fallax Kay, 1979 | Powellisetia fallax | 3477 |
| Powellsetia fallax Kay, 1979 | Powellisetia fallax | 106786 |
| Cingula fernandinae Dall, 1927 | Cingula fernandinae | 19 |
| Rissoa fernandinae Dall, 1927 | Cingula fernandinae | 83435 |
| Alvania filosa Carpenter, 1864 | Alvania filosa | 19 |
| Rissoa filostria Melvill & Standen, 1912 | Onoba filostria | 83435 |
| Nobolira finlayi Powell, 1930 | Attenuata finlayi | 3477 |
| Benthonella fischeri Dall, 1889 | Benthonella fischeri | 19 |
| Schwartziella fischeri Desjardin, 1949 | Schwartziella fischeri | 19 |
| Rissoina floridana Olsson & Harbison, 1953 | Schwartziella floridana | 83435 |
| Rissoa frauenfeldiana Brusina, 1868 | Rissoa frauenfeldiana | 1056 |
| Rissoia fuegoensis Strebel, 1908 | Onoba fuegoensis | 83435 |
| Dolophanes gabbi Dall, 1889 | Microstelma gabbi | 83435 |
| Iopsis gabbii Mörch, 1876 | Zebina gabbii | 83435 |
| Alvania gagliniae Amati, 1985 | Alvania gagliniae | 1056 |
| Alvania garrafensis Peñas & Rolán, 2008 | Alvania garrafensis | 1056 |
| Benthonella gaza Dall, 1889 | Benthonella gaza | 19 |
| Rissoia gelida Smith, 1907 | Onoba gelida | 83435 |
| Rissoa georgiana Pfeffer, 1886 | Onoba georgiana | 83435 |
| Rissoa glaphyra Watson, 1886 | Onoba glaphyra | 83435 |
| Rissoa globulus Möller, 1842 | Boreocingula globulus | 83435 |
| Rissoa glypta Smith, 1890 | Onoba glypta | 83435 |
| Rissoa gradata d'Orbigny, 1842 | Alvania gradata | 83435 |
| Rissoa grippiana Dall, 1908 | Alvania aequisculpta | 75097 |
| Rissoa grisea Martens, 1885 | Onoba grisea | 83435 |
| Rissoa guerinii Récluz, 1843 | Rissoa guerinii | 3477 |
| Alvania guesti Faber & Moolenbeek, 1987 | Alvania guesti | 83435 |
| Alvania hallgassi Amati & Oliverio, 1985 | Alvania hallgassi | 1056 |
| Alvania harpa Verrill, 1882 | Alvania harpa | 19 |
| Rissoa harpa Verrill, 1880 | Pusillina harpa | 83435 |
| Rissoina helenae Smith, 1890 | Schwartziella helenae | 83435 |
| Crisilla herosae Hoffman & Freiwald, 2021 | Crisilla herosae | 3477 |
| Alvania herrerae Baker, Hanna, & Strong, 1930 | Alvania herrerae | 19 |
| Rissoa herwigia Castellanos & Fernández, 1974 | Alvania herwigia | 83435 |
| Crisilla hiera Amati, Di Giulio & Olivero, 2021 | Crisilla hiera | 3477 |
| Stosicia houbricki Sleurs, 1996 | Stosicia houbricki | 3477 |
| Alvania iliuliukensis Bartsch, 1911 | Alvania compacta | 75097 |
| Onoba improcera Warén, 1996 | Onoba improcera | 3477 |
| Setia incognita Perugia, 2021 | Setia incognita | 3477 |
| Rissoa incompta Gould, 1862 | Rissoa incompta | 83435 |
| Rissoia inornata Strebel, 1908 | Powellisetia inornata | 83435 |
| Rissoa italiensis Verduin, 1985 | Rissoa italiensis | 1056 |
| Cingula jacksoni Bartsch, 1953 | Cingula jacksoni | 19 |
| Nannoteretispira japonica Habe, 1961 | Nannoteretispira japonica | 19 |
| Alvania josefoi Oliver & Templado, 2009 | Alvania josefoi | 1056 |
| Alvania karlini Clarke, 1963 | Alvania karlini | 19 |
| Cingula katherinae Bartsch, 1912 | Cingula katherinae | 19 |
| Alvania keenae Gordon, 1939 | Alvania keenae | 19 |
| Rissoa kergueleni Smith, 1875 | Onoba kergueleni | 88799 |
| Austronoba kermadecensis Powell, 1927 | Onoba kermadecensis | 89401 |
| Alvania kyskaensis Bartsch, 1917 | Alvania kyskaensis | 19 |
| Onoba lacuniformis Ponder & Worsfold, 1994 | Onoba lacuniformis | 83435 |
| Rissoa laevigata Adams, 1850 | Zebina laevigata | 83435 |
| Rissoa lampra Dall, 1927 | Alvania lampra | 83435 |
| Cingula latior Mighels & Adams, 1842 | Alvania latior | 83435 |
| Cingula leptalea Verrill, 1884 | Onoba leptalea | 83435 |
| Setia levantina Bogi & Galil, 2007 | Setia levantina | 1056 |
| Rissoa lilacina Récluz, 1843 | Rissoa lilacina | 19 |
| Trophon limicola Verrill, 1885 | Trophon limicola | 83435 |
| Alvania lineata Risso, 1826 | Alvania lineata | 1056 |
| Zebina lis Tomlin, 1918 | Zebina lis | 86518 |
| Rissoa listera Dall, 1927 | Benthonellania listera | 83435 |
| Merelina longinqua Rehder, 1980 | Manzonia longinqua | 3477 |
| Benthonellania lozoueti Amati, Di Giulio & Oliverio, 2022 | Benthonellania lozoueti | 3477 |
| Eulimella lucida Verrill, 1884 | Melanella lucida | 83435 |
| Alvania lucinae Oberling, 1970 | Alvania lucinae | 1056 |
| Rissoa lusciniae Watson, 1886 | Onoba lusciniae | 83435 |
| Rissoa macra Watson, 1886 | Onoba macra | 83435 |
| Benthonellania maestratii Amati, Di Giulio & Oliverio, 2022 | Benthonellania maestratii | 3477 |
| Zebina malagazzae Sleurs & van Goethem, 2002 | Zebina malagazzae | 3477 |
| Alvania mamillata Risso, 1826 | Alvania mamillata | 1056 |
| Stosicia manikiensis Sleurs, 1996 | Stosicia manikiensis | 3477 |
| Crisilla marioni Fasulo & Gaglini, 1987 | Crisilla marioni | 1056 |
| Cithna marmorata Hedley, 1907 | Haurakia marmorata | 3204 |
| Cingula martyni Dall, 1887 | Cingula martyni | 19 |
| Alvania masirahensis Perugia, 2021 | Alvania masirahensis | 3477 |
| Benthonellania megan Amati, Di Giulio & Oliverio, 2022 | Benthonellania megan | 3477 |
| Rissoina mellissi Smith, 1890 | Schwartziella mellissi | 83435 |
| Onoba merelinoides Worsfold, Avern & Ponder, 1993 | Onoba merelinoides | 83435 |
| Alvania meridioamericana Weisbord, 1962 | Alvania meridioamericana | 83435 |
| Alvania microglypta Haas, 1943 | Alvania microglypta | 19 |
| Powellisetia microlirata Ponder & Worsfold, 1994 | Powellisetia microlirata | 83435 |
| Rissoa mighelsii Stimpson, 1851 | Onoba mighelsii | 83435 |
| Rissoa minor Adams, 1850 | Schwartziella minor | 83435 |
| Stosicia mirabilis Weinkauff, 1881 | Stosicia mirabilis | 86518 |
| Cingula moerchi Collin, 1887 | Cingula moerchi | 19 |
| Onoba moerchi Collin, 1886 | Alvania moerchi | 3477 |
| Cingula moerchii Collin, 1886 | Alvania moerchii | 83435 |
| Rissoa monodonta Philippi, 1836 | Rissoa monodonta | 1056 |
| Alvania montereyensis Bartsch, 1911 | Alvania montereyensis | 19 |
| Cingula montereyensis Bartsch, 1912 | Cingula montereyensis | 19 |
| Alvania moolenbeeki Jong & Coomans, 1988 | Alvania moolenbeeki | 3477 |
| Rissoa mortoni Kurtz, 1860 | Rissoa mortoni | 83435 |
| Rissoina mottezi Bavay, 1917 | Folinia mottezi | 83435 |
| Benthonellania multicostata Absalao & Santos, 2004 | Benthonellania multicostata | 83435 |
| Ethalia multistriatus Verrill, 1884 | Solariorbis multistriatus | 83435 |
| Anabathron muriel Bartsch & Rehder, 1939 | Anabathron muriel | 19 |
| Alvania nestaresi Oliverio & Amati, 1990 | Alvania nestaresi | 1056 |
| Nassa nigrolabrum Verrill, 1880 | Cymatium nigrolabrum | 83435 |
| Benthonella nisonis Dall, 1889 | Benthonella nisonis | 19 |
| Simulamerelina novemstriata Faber & Moolenbeek, 2004 | Simulamerelina novemstriata | 83435 |
| Alvania obliqua Warén, 1974 | Onoba obliqua | 83435 |
| Alvania oldroydae Bartsch, 1911 | Alvania oldroydae | 19 |
| Alvania oliverioi Buzzurro, 2003 | Alvania oliverioi | 1056 |
| Onoba oliverioi Smriglio & Mariottini, 2000 | Onoba oliverioi | 1056 |
| Rissoa ordinaria Smith, 1890 | Rissoa ordinaria | 83435 |
| Microstelma oshikatai Lan, 2004 | Microstelma oshikatai | 86518 |
| Rissoa panhormensis Verduin, 1985 | Rissoa panhormensis | 1056 |
| Rissoa patens Gould, 1862 | Rissoa patens | 83435 |
| Rissoa paucilirata Melvill & Standen, 1912 | Onoba paucilirata | 83435 |
| Alvania pedroana Bartsch, 1911 | Alvania pedroana | 19 |
| Rissoa pelagica Stimpson, 1851 | Frigidoalvania pelagica | 83435 |
| Rissoa perfecta Smith, 1890 | Cingula perfecta | 83435 |
| Rissoa philomelae Watson, 1886 | Powellisetia philomelae | 83435 |
| Alvania pisinna Melvill & Standen, 1896 | Merelina pisinna | 89401 |
| Alvania pizzinii Amati, Smriglio & Oliverio, 2020 | Alvania pizzinii | 3477 |
| Rissoa platia Smith, 1890 | Onoba platia | 83435 |
| Rissoina polytropa Hedley, 1899 | Stosicia mirabilis | 3477 |
| Rissoa pompholyx Dall, 1927 | Rissoa pompholyx | 19 |
| Rissoa porifera Lovén, 1846 | Rissoa lilacina | 75097 |
| Rissoa precipitata Dall, 1889 | Alvania precipitata | 83435 |
| Onoba protofimbriata Ponder & Worsfold, 1994 | Onoba protofimbriata | 83435 |
| Alvania pseudoareolata Waren, 1974 | Alvania pseudoareolata | 19 |
| Alvania pseudosyngenes Waren, 1973 | Alvania pseudosyngenes | 19 |
| Rissoa pseustes Smith, 1890 | Rissoa pseustes | 83435 |
| Rissoa pupoidea Kurtz & Stimpson, 1851 | Rissoa pupoidea | 83435 |
| Alvania purpurea Dall, 1871 | Alvania purpurea | 19 |
| Rissoa pyrrhias Watson, 1886 | Benthonellania pyrrhias | 83435 |
| Cingula robusta Lea, 1845 | Cingula robusta | 83435 |
| Rissoa rodhensis Verduin, 1985 | Rissoa rodhensis | 1056 |
| Alvania rominae Amati, Trono & Oliverio, 2020 | Alvania rominae | 3477 |
| Alvania rosana Bartsch, 1911 | Alvania rosana | 19 |
| Alvania sandersoni Verrill, 1884 | Alvania sandersoni | 19 |
| Cingula sandersoni Verrill, 1884 | Talassia sandersoni | 83435 |
| Alvania sanjuanensis Bartsch, 1920 | Alvania sanjuanensis | 19 |
| Rissoia schraderi Strebel, 1908 | Onoba schraderi | 83435 |
| Alvania schwartziana Brusina, 1866 | Alvania schwartziana | 1056 |
| Rissoa schythei Philippi, 1868 | Onoba schythei | 83435 |
| Cingula scipio Dall, 1887 | Cingula scipio | 19 |
| Rissoa scotiana Melvill & Standen, 1907 | Ovirissoa scotiana | 83435 |
| Rissoa scrobiculata Möller, 1842 | Alvania scrobiculata | 83435 |
| Rissoina semiglabrata Adams, 1854 | Zebina semiglabrata | 83435 |
| Rissoina semiplicata Pease, 1863 | Zebina semiplicata | 3477 |
| Cingula semistriata Montagu, 1808 | Crisilla semistriata | 19 |
| Alvania settepassii Amati & Nofroni, 1985 | Alvania settepassii | 1056 |
| Rissoa similis Scacchi, 1836 | Rissoa similis | 1056 |
| Alvania simulans Locard, 1886 | Alvania simulans | 1056 |
| Rissoa simulans Smith, 1890 | Cingula simulans | 83435 |
| Manzonia sleursi Amati, 1988 | Manzonia sleursi | 83435 |
| Cingula solida Adams, 1850 | Alvania solida | 83435 |
| Alvania sororcula Granata-Grillo, 1877 | Alvania sororcula | 1056 |
| Rissoa splendida Eichwald, 1830 | Rissoa splendida | 1056 |
| Rissoia steineni Strebel, 1908 | Onoba steineni | 83435 |
| Alvania stenolopha Bouchet & Warn, 1993 | Alvania stenolopha | 8774 |
| Onoba striola Ponder & Worsfold, 1994 | Onoba striola | 83435 |
| Onoba subaedonis Ponder & Worsfold, 1994 | Onoba subaedonis | 83435 |
| Alvania subareolata Monterosato, 1869 | Alvania subareolata | 1056 |
| Onoba subincisa Ponder & Worsfold, 1994 | Onoba subincisa | 83435 |
| Onoba sulcula Ponder & Worsfold, 1994 | Onoba sulcula | 83435 |
| Merelina superba Powell, 1927 | Merelina superba | 89401 |
| Cingula syngenes Verrill, 1884 | Alvania syngenes | 83435 |
| Rissoa syngenes Verrill, 1884 | Rissoa syngenes | 19 |
| Benthonellania tarava Amati, Di Giulio & Oliverio, 2022 | Benthonellania tarava | 3477 |
| Alvania templadoi Hoffman & Freiwald, 2021 | Alvania templadoi | 3477 |
| Alvania tessellata Weinkauff, 1868 | Alvania tessellata | 1056 |
| Benthonellania thielei Amati, Di Giulio & Oliverio, 2022 | Benthonellania thielei | 3477 |
| Onoba torelli Warén, 1996 | Onoba torelli | 83435 |
| Rissoa toroensis Olsson & McGinty, 1958 | Rissoa toroensis | 19 |
| Rissoa torquilla Pallary, 1912 | Rissoa torquilla | 1056 |
| Alvania trachisma Bartsch, 1911 | Alvania trachisma | 19 |
| Rissoa transenna Watson, 1886 | Onoba transenna | 83435 |
| Rissoa triangularis Watson, 1886 | Setia triangularis | 83435 |
| Onoba tristanensis Worsfold, Avern & Ponder, 1993 | Onoba tristanensis | 83435 |
| Rissoina triticea Pease, 1861 | Schwartziella triticea | 3477 |
| Benthonellania tuamotu Amati, Di Giulio & Oliverio, 2022 | Benthonellania tuamotu | 3477 |
| Alvania tumida Carpenter, 1857 | Alvania tumida | 19 |
| Alvania turgida Verrill, 1880 | Alvania turgida | 19 |
| Alvania turkensis Faber & Moolenbeek, 2004 | Alvania turkensis | 83435 |
| Rissoia turqueti Lamy, 1905 | Onoba turqueti | 83435 |
| Cingula turricula Lea, 1845 | Cingula turricula | 83435 |
| Setia turriculata Monterosato, 1884 | Setia turriculata | 1056 |
| Rissoina turtoni Smith, 1890 | Schwartziella turtoni | 83435 |
| Zebina unamae Rolán, 1998 | Zebina unamae | 83435 |
| Rissoa vaga Smith, 1890 | Cingula vaga | 83435 |
| Alvania valeriae Absalao, 1994 | Alvania valeriae | 83435 |
| Rissoina vanpeli Jong & Coomans, 1988 | Schwartziella vanpeli | 83435 |
| Rissoa varicifera Smith, 1890 | Cingula varicifera | 83435 |
| Rissoa ventricosa Desmarest, 1814 | Rissoa ventricosa | 1056 |
| Alvania vermaasi van Aartsen, 1975 | Alvania vermaasi | 1056 |
| Crepitacella vestale Rehder, 1943 | Microstelma vestale | 83435 |
| Crepitacella vestalis Rehder, 1943 | Crepitacella vestalis | 19 |
| Alvania villarii Micali, Tisselli & Giunchi, 2005 | Alvania villarii | 1056 |
| Rissoa violacea Desmarest, 1814 | Rissoa violacea | 1056 |
| Rissoa vitrea Adams, 1850 | Zebina vitrea | 83435 |
| Rissoina vitrinella Mörch, 1876 | Zebina vitrinella | 83435 |
| Cithna wallacei Oliver, 1915 | Pusillina wallacei | 88739 |
| Rissoa wallichi Smith, 1890 | Cingula wallichi | 83435 |
| Merelina wanawana Kay, 1979 | Simulamerelina wanawana | 3477 |
| Alvania wangi Xu, Qi & Kong, 2022 | Alvania wangi | 3477 |
| Alvania weinkauffi Weinkauff, 1868 | Alvania weinkauffi | 1056 |
| Rissoa wyvillethomsoni Friele, 1877 | Punctulum wyvillethomsoni | 83435 |
| Rissoa xanthias Watson, 1886 | Rissoa xanthias | 83435 |
| Alvania zylensis Gofas & Warén, 1982 | Alvania zylensis | 1056 |