| Helgicirrha Hartlaub, 1909 |
| Helgicirrha medusifera (H. B. Bigelow, 1909) |
| Helgicirrha shulzei Hartlaub, 1909 |
| Irenium Haeckel, 1879 |
| Irenium alabiatum Zamponi, Suárez-Morales & Gasca, 1999 |
| Irenium labiatum Zamponi, Suárez-Morales & Gasca, 1999 |
| Irenopsis Goette, 1886 |
| Irenopsis hexanemalis Goette, 1886 |
| Phialopsis Torrey, 1909 |
| Phialopsis diegensis Torrey, 1909 |
| Phortis McCrady, 1857 |
| Phortis lactea Mayer, 1900 |
| Plancia Forbes & Goodsir, 1848 |
| Plancia gracilis Forbes & Goodsir, 1851 |