| Nominal Species (n = 11) | Present allocation (n = 11) | Ref. |
|---|---|---|
| Cytaeis adherens Bouillon, Boero & Seghers, 1991 | Cytaeis adherens | 3134 |
| Hydractinia clavata Jäderholm, 1905 | Perarella clavata | 3477 |
| Cnidostoma fallax Vanhoeffen, 1911 | Cnidostoma fallax | 19 |
| Cytaeis imperialis Uchida, 1964 | Cytaeis imperialis | 3134 |
| Cytaeis nassa Millard, 1959 | Cytaeis nassa | 3134 |
| Cytaeis nuda Rees, 1962 | Cytaeis nuda | 3134 |
| Paracytaeis octona Bouillon, 1978 | Paracytaeis octona | 8278 |
| Cytaeis pusilla Gegenbaur, 1857 | Cytaeis pusilla | 8278 |
| Cytaeis tetrastyla Eschscholtz, 1829 | Cytaeis tetrastyla | 19 |
| Cytaeis uchidae Rees, 1962 | Cytaeis uchidae | 3134 |
| Cytaeis vulgaris Agassiz & Mayer, 1899 | Cytaeis vulgaris | 19 |