| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Coelotrochus chathamensis | (Hutton, 1873) | accepted name | Yes | senior synonym |
new combination |
| Polydonta chathamensis | Hutton, 1873 | synonym | No | senior synonym |
original combination |
| Thoristella chathamensis | (Hutton, 1873) | synonym | No | senior synonym |
new combination |
| Thoristella chathamensis cookiana | Powell, 1934 | synonym | No | junior synonym |
original combination |