| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Cidaris galapagensis | Döderlein, 1887 | synonym | No | senior synonym |
original combination |
| Eucidaris galapagensis | Döderlein, 1887 | synonym | No | senior synonym |
original combination |
| Eucidaris thouarsii | (Agassiz & Desor, 1846) | accepted name | Yes | senior synonym |
new combination |
| Eucidaris thouarsii galapagensis | Döderlein, 1887 | accepted name | No | senior synonym |
change in rank |