| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Siphonosoma amamiense | (Ikeda, 1904) | synonym | No | junior synonym |
new combination |
| Siphonosoma funafuti | (Shipley, 1898) | accepted name | Yes | senior synonym |
new combination |
| Sipunculus amamiensis | Ikeda, 1904 | synonym | No | junior synonym |
original combination |
| Sipunculus funafuti | Shipley, 1898 | synonym | No | senior synonym |
original combination |