| Species | Name Used |
|---|---|
| Spiochaetopterus oculatus Webster, 1879 | Spiochaetopterus oculatus (p. 115-126 ) |
| Syllis cornuta Rathke, 1843 | Syllis cornuta (p. 115-126 ) |
| Syllis hyalina Grube, 1863 | Syllis hyalina (p. 115-126 ) |
| Synelmis rigida (Fauvel, 1919) | Ancistrosyllis rigida (p. 115-126 ) |
| Syringodium filiforme Kützing, 1860 | Syringodium filiforme (p. 115-126 ) |
| Thelepus setosus (Quatrefages, 1865) | Thelepus setosus (p. 115-126 ) |
| Trichobranchus glacialis Malmgren, 1866 | Trichobranchus glacialis (p. 115-126 ) |