| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Siphonosoma eniwetoki | Fisher, 1950 | synonym | No | junior synonym |
original combination |
| Siphonosoma hawaiense | Edmonds, 1966 | synonym | No | junior synonym |
original combination |
| Siphonosoma nanhaiensis | Li, 1985 | synonym | No | junior synonym |
original combination |
| Siphonosoma rotumanum | (Shipley, 1898) | accepted name | Yes | senior synonym |
new combination |
| ! Sipunculus rotumanus | Shipley, 1898 | synonym | No | senior synonym |
original combination |