| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Arhythmorhynchus frassoni | (Molin, 1858) | accepted name | Yes | senior synonym |
new combination |
| Echinorhynchus frassoni | Molin, 1858 | synonym | No | senior synonym |
original combination |
| Echinorhynchus roseus | Molin, 1858 | ambiguous synonym | No | other |
original combination |
| Echinorhynchus rubicundus | Molin, 1859 | synonym | No | junior synonym |
original combination |