| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Hydractinia allmani | Bonnevie, 1898 | synonym | No | senior synonym |
original combination |
| Hydractinia ornata | Bonnevie, 1899 | synonym | No | junior synonym |
original combination |
| Schuchertinia allmanii | (Bonnevie, 1898) | accepted name | Yes | senior synonym |
new combination |