| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Meioceras cornucopiae Carpenter, 1859 |
Western Atlantic | 0.22 | |
| Meioceras cubitatum de Folin, 1868 |
Smooth caecum | Western Atlantic | 0.2 |
| Meioceras nitidum (Stimpson, 1851) |
Little horn caecum | Western Atlantic | 0.31 |