| Species | Name Used |
|---|---|
| Styelopsis tricostata (Millar, 1960) | Styelopsis tricostata (p. ) |
| Sycozoa georgiana (Michaelsen, 1907) | Sycozoa georgiana (p. ) |
| Sycozoa sigillinoides Lesson, 1830 | Sycozoa sigillinoides (p. ) |
| Synoicum kerguelenense (Hartmeyer, 1911) | Synoicum kerguelenense (p. ) |
| Synoicum kuranui Brewin, 1950 | Synoicum kurani (p. ) |
| Synoicum pererratum (Sluiter, 1912) | Synoicum pererratum (p. ) |
| Synoicum ramulosum Kott, 1969 | Synoicum ramulosum (p. ) |
| Synoicum tentaculatum Kott, 1969 | Synoicum tentaculatum (p. ) |
| Trididemnum auriculatum Michaelsen, 1919 | Trididemnum auriculatum (p. ) |
| Trididemnum propinquum (Herdman, 1886) | Trididemnum propinquum (p. ) |
| Xenobranchion insigne Ärnbäck, 1950 | Xenobranchion insigne (p. ) |