1. Subgenus Ovulum (Birostra) Swainson, 1840 accepted as Volva Röding, 1798
   1. Species Ovulum (Birostra) aurantium G. B. Sowerby III, 1889 accepted as Phenacovolva aurantia (G. B. Sowerby III, 1889) (basionym)
2. Species Ovulum acicularis (Lamarck, 1811) accepted as Cymbovula acicularis (Lamarck, 1810)
3. Species Ovulum acuminatum G. B. Sowerby II, 1848 accepted as Simnialena acuminata (G. B. Sowerby II, 1848) (original combination)
4. Species Ovulum adamsii Reeve, 1865 accepted as Procalpurnus semistriatus (Pease, 1863)
5. Species Ovulum adriaticum G. B. Sowerby I, 1828 accepted as Pseudosimnia adriatica (G. B. Sowerby I, 1828)
6. Species Ovulum aequale G. B. Sowerby I, 1832 accepted as Neosimnia avena (G. B. Sowerby I, 1833) accepted as Simnia avena (G. B. Sowerby I, 1833)
7. Species Ovulum alabaster Reeve, 1865 accepted as Diminovula alabaster (Reeve, 1865)
8. Species Ovulum album Dufo, 1840 accepted as Procalpurnus lacteus (Lamarck, 1810)
9. Species Ovulum angasi Reeve, 1865 accepted as Pellasimnia angasi (Reeve, 1865) (original combination)
10. Species Ovulum antillarum Reeve, 1865 accepted as Simnialena uniplicata (G. B. Sowerby II, 1849) (unaccepted > junior subjective synonym)
11. Species Ovulum apertum G. B. Sowerby II, 1849 accepted as Simnia aperta (G. B. Sowerby II, 1849) accepted as Xandarovula aperta (G. B. Sowerby II, 1849) (original combination)
12. Species Ovulum arcuatum Reeve, 1865 accepted as Simnia arcuata (Reeve, 1865) (original combination)
13. Species Ovulum aurantium G. B. Sowerby III, 1889 accepted as Phenacovolva aurantia (G. B. Sowerby III, 1889) (original combination)
14. Species Ovulum avena G. B. Sowerby I, 1833 accepted as Neosimnia avena (G. B. Sowerby I, 1833) accepted as Simnia avena (G. B. Sowerby I, 1833) (original combination)
15. Species Ovulum birostre (Linnaeus, 1767) accepted as Phenacovolva birostris (Linnaeus, 1767) (superseded combination)
16. Species Ovulum breve G. B. Sowerby I, 1828 accepted as Prionovolva brevis (G. B. Sowerby I, 1828) (synonym)
17. Species Ovulum bullatum G. B. Sowerby II, 1848 accepted as Carpiscula bullata (G. B. Sowerby II, 1848) (original combination)
18. Species Ovulum californicum Reeve, 1865 accepted as Simnialena rufa (G. B. Sowerby I, 1833)
19. Species Ovulum coarctatum G. B. Sowerby II, 1848 accepted as Aclyvolva coarctata (G. B. Sowerby II, 1848) (original combination)
20. Species Ovulum concinnum G. B. Sowerby II, 1848 accepted as Diminovula concinna (G. B. Sowerby II, 1848) (original combination)
21. Species Ovulum corrugatum Hinds, 1844 accepted as Eratoena corrugata (Hinds, 1844)
22. Species Ovulum deflexum G. B. Sowerby II, 1849 accepted as Naviculavolva deflexa (G. B. Sowerby II, 1849) (original combination)
23. Species Ovulum dentatum G. B. Sowerby II, 1848 accepted as Crenavolva renovata (Iredale, 1930) (invalid: junior homonym of Ovula dentata Fischer von Waldheim, 1807; Prosimnia renovata is a replacement name)
24. Species Ovulum depressum G. B. Sowerby III, 1875 accepted as Hiatavolva depressa (G. B. Sowerby III, 1875) (original combination)
25. Species Ovulum dorsuosum Hinds, 1844 accepted as Dentiovula dorsuosa (Hinds, 1844)
26. Species Ovulum emarginatum G. B. Sowerby I, 1830 accepted as Cyphoma emarginata (G. B. Sowerby I, 1830) accepted as Cyphoma emarginatum (G. B. Sowerby I, 1830)
27. Species Ovulum formicarium G. B. Sowerby I, 1828 accepted as Simnialena formicaria (G. B. Sowerby I, 1828) (original combination)
28. Species Ovulum formicarium Keep, 1887 accepted as Neosimnia loebbeckeana (Weinkauff, 1881) accepted as Simnia loebbeckeana (Weinkauff, 1881)
29. Species Ovulum formosum G. B. Sowerby II, 1848 accepted as Primovula formosa (G. B. Sowerby II, 1848) (original combination)
30. Species Ovulum formosum A. Adams & Reeve, 1848 accepted as Primovula formosa (G. B. Sowerby II, 1848)
31. Species Ovulum frumentum G. B. Sowerby I, 1828 accepted as Crenavolva frumentum (G. B. Sowerby I, 1828) (original combination)
32. Species Ovulum fruticum Reeve, 1865 accepted as Prionovolva brevis (G. B. Sowerby I, 1828) (unaccepted > junior subjective synonym, synonym)
33. Species Ovulum gallinaceum Hinds, 1844 accepted as Alaerato gallinacea (Hinds, 1844) (original combination)
34. Species Ovulum gallinaceum (Hinds, 1844) sensu Lorenz & Fehse, 2009 accepted as Alaerato gallinacea (Hinds, 1844)
35. Species Ovulum gracile G. B. Sowerby II, 1848 accepted as Phenacovolva subreflexa (G. B. Sowerby II, 1848)
36. Species Ovulum haynesi G. B. Sowerby III, 1889 accepted as Pellasimnia angasi (Reeve, 1865)
37. Species Ovulum hordaceum (Lamarck, 1810) sensu G. B. Sowerby I, 1830 accepted as Prosimnia semperi (Weinkauff, 1881)
38. Species Ovulum immunitum Guppy, 1873 † accepted as Cyphoma intermedium (G. B. Sowerby I, 1828) (unaccepted > junior subjective synonym)
39. Species Ovulum inflexum G. B. Sowerby I, 1833 accepted as Simnialena rufa (G. B. Sowerby I, 1833) (junior synonym)
40. Species Ovulum intermedium G. B. Sowerby I, 1828 accepted as Cyphoma intermedium (G. B. Sowerby I, 1828) (unaccepted > superseded combination)
41. Species Ovulum lanceolatum G. B. Sowerby II, 1849 accepted as Aclyvolva lanceolata (G. B. Sowerby II, 1849) (original combination)
42. Species Ovulum lividum Reeve, 1865 accepted as Neosimnia avena (G. B. Sowerby I, 1833) accepted as Simnia avena (G. B. Sowerby I, 1833)
43. Species Ovulum longirostratum G. B. Sowerby I, 1828 accepted as Calcarovula longirostrata (G. B. Sowerby I, 1828)
44. Species Ovulum margarita G. B. Sowerby I, 1828 accepted as Diminovula margarita (G. B. Sowerby I, 1828)
45. Species Ovulum marginatum G. B. Sowerby I, 1828 accepted as Margovula marginata (G. B. Sowerby I, 1828)
46. Species Ovulum neglectum Reeve, 1865 accepted as Neosimnia arcuata (Reeve, 1865) accepted as Simnia arcuata (Reeve, 1865)
47. Species Ovulum nubeculatum G. B. Sowerby II, 1848 accepted as Prionovolva brevis (G. B. Sowerby I, 1828) (synonym)
48. Species Ovulum obtusum G. B. Sowerby I, 1828 accepted as Simnia spelta (Linnaeus, 1758) (junior synonym)
49. Species Ovulum ovum (Linnaeus, 1758) accepted as Ovula ovum (Linnaeus, 1758) (superseded combination and unavailable genus name)
50. Species Ovulum philippinarum G. B. Sowerby II, 1849 accepted as Phenacovolva philippinarum (G. B. Sowerby II, 1849)
51. Species Ovulum pygmaea G. B. Sowerby I, 1828 accepted as Ovula ovum (Linnaeus, 1758) (junior subjective synonym)
52. Species Ovulum pyriforme G. B. Sowerby I, 1828 accepted as Margovula pyriformis (G. B. Sowerby I, 1828)
53. Species Ovulum recurvum G. B. Sowerby II, 1848 accepted as Phenacovolva recurva (G. B. Sowerby II, 1848) (original combination)
54. Species Ovulum rhodium (A. Adams, 1854) accepted as Sandalia triticea (Lamarck, 1810)
55. Species Ovulum roseum (A. Adams, 1855) accepted as Phenacovolva rosea (A. Adams, 1855)
56. Species Ovulum rufum G. B. Sowerby I, 1833 accepted as Simnialena rufa (G. B. Sowerby I, 1833) (original combination)
57. Species Ovulum secale G. B. Sowerby I, 1828 accepted as Simnia spelta (Linnaeus, 1758) (junior synonym)
58. Species Ovulum seminulum G. B. Sowerby I, 1828 accepted as Simnia avena (G. B. Sowerby I, 1833)
59. Species Ovulum simile G. B. Sowerby II, 1849 accepted as Neosimnia avena (G. B. Sowerby I, 1833) accepted as Simnia avena (G. B. Sowerby I, 1833)
60. Species Ovulum sinense G. B. Sowerby III, 1874 accepted as Margovula marginata (G. B. Sowerby I, 1828) (junior synonym)
61. Species Ovulum spelta (Linnaeus, 1758) sensu G. B. Sowerby I, 1828 accepted as Phenacovolva brevirostris (Schumacher, 1817) (misapplication)
62. Species Ovulum striatulum G. B. Sowerby I, 1828 accepted as Crenavolva striatula (G. B. Sowerby I, 1828) (original combination)
63. Species Ovulum subreflexum G. B. Sowerby II, 1848 accepted as Phenacovolva subreflexa (G. B. Sowerby II, 1848) (unaccepted > superseded combination)
64. Species Ovulum subrostratum G. B. Sowerby II, 1849 accepted as Simnialena uniplicata (G. B. Sowerby II, 1849)
65. Species Ovulum umbilicatum G. B. Sowerby II, 1849 accepted as Habuprionovolva umbilicata (G. B. Sowerby II, 1849) (original combination)
66. Species Ovulum uniplicatum G. B. Sowerby II, 1849 accepted as Simnialena uniplicata (G. B. Sowerby II, 1849) (unaccepted > superseded combination)
67. Species Ovulum variabile Reeve, 1865 accepted as Simnialena rufa (G. B. Sowerby I, 1833)
68. Species Ovulum vidleri G. B. Sowerby III, 1881 accepted as Simnia arcuata (Reeve, 1865)
69. Species Ovulum volva (Linnaeus, 1758) sensu G. B. Sowerby I, 1830 accepted as Volva habei Oyama, 1961
70. Species Ovulum bulla G. B. Sowerby II, 1848 accepted as Testudovolva bulla (G. B. Sowerby II, 1848) (uncertain > nomen dubium)

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