| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Cymatium chlorostomum | Lamarck, 1822 | synonym | No | junior synonym |
original combination |
| Cymatium nicobaricum | (Roding, 1798) | accepted name | Yes | senior synonym |
new combination |
| Cymatium pulchellus | Adams, 1850 | synonym | No | junior synonym |
original combination |
| Cymatium pumilio | Morch, 1877 | synonym | No | junior synonym |
original combination |
| Tritonium nicobaricum | Röding, 1798 | synonym | No | senior synonym |
original combination |