| Donax punctatostriatus var. caelatus P. P. Carpenter, 1857 |
| Donax stultorum Mawe, 1823 |
| Donax texasianus Philippi, 1847 |
| Donax transversus G. B. Sowerby I, 1825 |
| Donax tumidus Philippi, 1848 |
| Donax variabilis Say, 1822 |
| Donax variabilis subsp. roemeri Philippi, 1849 |
| Iphigenia Schumacher, 1817 |
| Iphigenia altior (G. B. Sowerby I, 1833) |
| Iphigenia brasiliana (Lamarck, 1818) |
| Iphigenia brasiliensis (Lamarck, 1818) |