| Macoma constricta (Bruguière, 1792) |
| Macoma hesperus Dall, 1908 |
| Macoma indentata P. P. Carpenter, 1864 |
| Macoma inflatula Dall, 1897 |
| Macoma limula Dall, 1895 |
| Macoma mitchelli Dall, 1895 |
| Macoma nasuta (Conrad, 1837) |
| Macoma tenta (Say, 1834) |
| Macoma yoldiformis P. P. Carpenter, 1864 |
| Macoploma Pilsbry & Olsson, 1941 |
| Macoploma ecuadoriana (Pilsbry & Olsson, 1941) |
| Macoploma elytrum (Keen, 1958) |
| Macoploma extenuata Dall, 1900 |
| Macoploma hesperus (Dall, 1908) |
| Macoploma lamproleuca (Pilsbry & Lowe, 1932) |
| Macoploma limula (Dall, 1895) |
| Macoploma panamensis (Dall, 1900) |
| Macoploma siliqua (C. B. Adams, 1852) |
| Macoploma tageliformis (Dall, 1900) |
| Macoploma tenta (Say, 1834) |