1. Species Sphenia binghami W. Turton, 1822
2. Species Sphenia coreanica Habe, 1951
3. Species Sphenia elongata J.-L. Zhang, F.-S. Xu & J.-Y. Liu, 2012
4. Species Sphenia fragilis (H. Adams & A. Adams, 1854)
5. Species Sphenia gulfensis Coan, 1999
6. Species Sphenia hatcheri Pilsbry, 1899
7. Species Sphenia luticola (Valenciennes, 1846)
8. Species Sphenia natalensis E. A. Smith, 1910
9. Species Sphenia perversa Blanford, 1867
10. Species Sphenia rueppellii A. Adams, 1851
11. Species Sphenia sincera Hanks & Packer, 1985
12. Species Sphenia tumida J. E. Lewis, 1968
13. Species Sphenia alternata A. d'Orbigny, 1853 accepted as Cardiomya alternata (A. d'Orbigny, 1853) (original combination)
14. Species Sphenia angulata S. V. Wood, 1840 accepted as Basterotina angulata (S. V. Wood, 1857) (unaccepted > nomen nudum)
15. Species Sphenia angulata S. V. Wood, 1857 accepted as Basterotina angulata (S. V. Wood, 1857) (original combination)
16. Species Sphenia antillensis Dall & C. T. Simpson, 1901 accepted as Sphenia fragilis (H. Adams & A. Adams, 1854)
17. Species Sphenia bilirata Gabb, 1861 accepted as Hiatella arctica (Linnaeus, 1767)
18. Species Sphenia californica Conrad, 1837 accepted as Cryptomya californica (Conrad, 1837) (unaccepted > superseded combination)
19. Species Sphenia cleryana A. d'Orbigny, 1846 accepted as Cardiomya cleryana (A. d'Orbigny, 1846) (original combination)
20. Species Sphenia decurtata A. Adams, 1851 accepted as Tugonia decurtata (A. Adams, 1851) (superseded combination)
21. Species Sphenia elliptica A. Adams, 1851 accepted as Cryptomya elliptica (A. Adams, 1851) (original combination)
22. Species Sphenia globula Dall, 1919 accepted as Sphenia luticola (Valenciennes, 1846)
23. Species Sphenia inaequalis E. A. Smith, 1893 accepted as Sphenia perversa Blanford, 1867
24. Species Sphenia ornatissima A. d'Orbigny, 1853 accepted as Cardiomya ornatissima (A. d'Orbigny, 1853) (unaccepted > superseded combination)
25. Species Sphenia ovoidea P. P. Carpenter, 1865 accepted as Mya arenaria Linnaeus, 1758 (unaccepted > junior subjective synonym)
26. Species Sphenia pacificiensis de Folin, 1867 accepted as Sphenia fragilis (H. Adams & A. Adams, 1854)
27. Species Sphenia philippinarum A. Adams, 1851 accepted as Cryptomya philippinarum (A. Adams, 1851)
28. Species Sphenia pholadidea Dall, 1916 accepted as Sphenia luticola (Valenciennes, 1846)
29. Species Sphenia princeps A. Adams, 1851 accepted as Cryptomya princeps (A. Adams, 1851) (unaccepted > superseded combination)
30. Species Sphenia quadrangularis Lynge, 1909 accepted as Aenictomya quadrangularis (Lynge, 1909)
31. Species Sphenia rietensis W. H. Turton, 1932 accepted as Sphenia natalensis E. A. Smith, 1910 (junior synonym)
32. Species Sphenia similis E. A. Smith, 1893 accepted as Sphenia sowerbyi E. A. Smith, 1893 accepted as Indosphenia sowerbyi (E. A. Smith, 1893)
33. Species Sphenia sowerbyi E. A. Smith, 1893 accepted as Indosphenia sowerbyi (E. A. Smith, 1893)
34. Species Sphenia subequalis Dall, 1908 accepted as Sphenia hatcheri Pilsbry, 1899
35. Species Sphenia swainsoni W. Turton, 1822 accepted as Mya truncata Linnaeus, 1758
36. Species Sphenia trunculus Dall, 1916 accepted as Sphenia fragilis (H. Adams & A. Adams, 1854) (junior subjective synonym)

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