1. Subgenus Amphiperas (Neosimnia) P. Fischer, 1884 accepted as Neosimnia P. Fischer, 1884
   1. Species Amphiperas (Neosimnia) spelta (Linnaeus, 1758) accepted as Simnia spelta (Linnaeus, 1758)
2. Subgenus Amphiperas (Ovula) Bruguière, 1789 accepted as Ovula Bruguière, 1789
   1. Species Amphiperas (Ovula) pudica A. Adams, 1855 accepted as Prionovolva brevis (G. B. Sowerby I, 1828) (unaccepted > junior subjective synonym)
3. Subgenus Amphiperas (Ovulum) G. B. Sowerby I, 1828 accepted as Ovula Bruguière, 1789 (unjustified emendation of Ovula)
   1. Species Amphiperas (Ovulum) traillii A. Adams, 1856 accepted as Crenavolva traillii (A. Adams, 1856) (unaccepted > superseded combination)
4. Subgenus Amphiperas (Simnia) Risso, 1826 accepted as Simnia Risso, 1826
   1. Species Amphiperas (Simnia) aureocincta (Dall, 1889) accepted as Cyphoma aureocinctum (Dall, 1889) (unaccepted > superseded combination)
   2. Species Amphiperas (Simnia) piragua Dall, 1889 accepted as Calcarovula piragua (Dall, 1889) (original combination)
5. Species Amphiperas beckeri G. B. Sowerby III, 1900 accepted as Primovula beckeri (G. B. Sowerby III, 1900) (original combination)
6. Species Amphiperas bimaculata A. Adams, 1855 accepted as Margovula bimaculata (A. Adams, 1855) (unaccepted > superseded combination)
7. Species Amphiperas birostre (Linnaeus, 1767) accepted as Phenacovolva birostris (Linnaeus, 1767) (superseded combination)
8. Species Amphiperas bullatus A. Gould, 1861 accepted as Globovula cavanaghi (Iredale, 1931) (nomen oblitum, ICZN Article 23.9.2)
9. Species Amphiperas isibasii Kuroda, 1929 accepted as Ovula isibasii (Kuroda, 1929) (original combination)
10. Species Amphiperas margarita A. Adams, 1855 accepted as Diminovula concinna (G. B. Sowerby II, 1848) (junior synonym)
11. Species Amphiperas ovoideus H. Adams, 1872 accepted as Diminovula alabaster (Reeve, 1865)
12. Species Amphiperas pulchellus H. Adams, 1873 accepted as Testudovolva pulchella (H. Adams, 1873) (unaccepted > superseded combination)
13. Species Amphiperas pyrulina A. Adams, 1855 accepted as Pseudosimnia pyrulina (A. Adams, 1855) (unaccepted > superseded combination)
14. Species Amphiperas rhodia A. Adams, 1855 accepted as Sandalia triticea (Lamarck, 1810) (unaccepted > junior subjective synonym)
15. Species Amphiperas rosemaculatum Schepman, 1909 accepted as Primovula roseomaculata (Schepman, 1909) (original combination)
16. Species Amphiperas scitula A. Adams, 1855 accepted as Sandalia triticea (Lamarck, 1810) (unaccepted > junior subjective synonym)
17. Species Amphiperas semistriata Pease, 1863 accepted as Procalpurnus semistriatus (Pease, 1863)
18. Species Amphiperas smithi Bartsch, 1915 accepted as Phenacovolva zuidafrikaana (C. N. Cate, 1975) (junior homonym of Amphiperas smithi G. B. Sowerby III, 1894; Subsimnia zuiafrikaana Cate 1975 is a replacement name)
19. Species Amphiperas traillii A. Adams, 1856 accepted as Crenavolva traillii (A. Adams, 1856) (unaccepted > superseded combination)
20. Species Amphiperas smithi G. B. Sowerby III, 1894 (uncertain > taxon inquirendum, possibly a nomen dubium)

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