| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Lumbricus phalloides | Pallas, 1774 | synonym | No | senior synonym |
original combination |
| Sipunculus galapagensis | Fisher, 1947 | synonym | No | junior synonym |
original combination |
| Sipunculus inclusus | Sluiter, 1902 | synonym | No | senior synonym |
original combination |
| Sipunculus multisulcatus | Fischer, 1913 | synonym | No | junior synonym |
original combination |
| Sipunculus phalloides | (Pallas, 1774) | accepted name | Yes | senior synonym |
new combination |
| Sipunculus phalloides inclusus | Sluiter, 1902 | accepted name | No | senior synonym |
original combination |
| Sipunculus phalloides phalloides | (Pallas, 1774) | accepted name | No | senior synonym |
new combination |