| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Modulus angulata | Adams, 1845 | synonym | No | junior synonym |
original combination |
| Modulus carchedonius | (Lamarck, 1822) | accepted name | Yes | senior synonym |
new combination |
| Monodonta carchedonius | Lamarck, 1822 | synonym | No | senior synonym |
original combination |