| Species | Name Used |
|---|---|
| Sertularia cupressoides Clark, 1876 | Sertularia cupressoides (p. 115 ) |
| Spiochaetopterus typicus Sars, 1853 | Spiochaetopterus typicus (p. 115 ) |
| Stegophiura nodosa unspecified | Stegophiura nodosa (p. 114 ) |
| Stomphia coccinea (Müller, 1776) | Sagartia repens (p. 115 ) |
| Strongylocentrotus pallidus (Sars, 1871) | Strongylocentrotus pallidus (p. 114 ) |
| Terebellides stroemii Sars, 1835 | Terebellides stroemi (p. 114 ) |
| Travisia forbesii Johnston, 1840 | Travisia forbesii (p. 115 ) |
| Urticina felina (Linnaeus, 1767) | Urticina coriacea (p. 115 ) |