| Species | Name Used |
|---|---|
| Serratosagitta bierii (Alvariño, 1961) | Serratosagitta bierii (p. ) |
| Siriella thompsonii (Milne-Edwards, 1837) | Siriella thompsonii (p. ) |
| Sycon arcticum (Haeckel, 1870) | Sycon arcticum (p. ) |
| Tachyeres patachonicus (King, 1831) | Tachyeres patachonicus (p. ) |
| Thalassophis anomalus Schmidt, 1852 | Thalassophis anomalus (p. ) |
| Zonosagitta bedoti (Béraneck, 1895) | Zonosagitta bedoti (p. ) |