| Scientific Name | Author | English Name |
|---|---|---|
| Cuspidella costata | Hincks, 1868 | |
| Cuspidella grandis | Hincks, 1868 | |
| Cuspidella humilis | (Alder, 1862) | |
| Cuspidella mertensi | unspecified | |
| Cuspidella procumbens | Kramp, 1911 | |
| Egmundella fasciculata | Fraser, 1940 | |
| Egmundella gracilis | Stechow, 1921 | Gracile hydroid |
| Egmundella grandis | Fraser, 1941 | |
| Egmundella grimaldii | Leloup, 1940 | |
| Egmundella polynema | Fraser, 1938 | |
| Egmundella superba | Stechow, 1921 | |
| Keratosum maximum | (Levinsen, 1893) |