| Scientific Name | Author | English Name |
|---|---|---|
| Indomodulus tectum | (Gmelin, 1791) | Tectum modulus |
| Modulus bayeri | Petuch, 2001 | |
| Modulus bermontianus | Petuch, 1994 | |
| Modulus calusa | Petuch, 1988 | |
| Modulus carchedonius | (Lamarck, 1822) | Angled modulus |
| Modulus catenulatus | (Philippi, 1849) | |
| Modulus cerodes | (Adams, 1851) | |
| Modulus disculus | Philippi, 1846 | |
| Modulus floridanus | Conrad, 1869 | |
| Modulus kaicherae | Petuch, 1987 | |
| Modulus lindae | Petuch, 1987 | |
| Modulus lividus | (Philippi, 1849) | |
| Modulus modulus | (Linnaeus, 1758) | Buttonsnail |
| Modulus nodosus | Macsotay & Campos, 2001 | |
| Modulus pacei | Petuch, 1987 |