| Hydroides Gunnerus, 1768 |
| Hydroides (Eucarphus) Mörch, 1863 |
| Hydroides (Eucarphus) crucigera Mörch, 1863 |
| Hydroides (Eucarphus) dirampha Mörch, 1863 |
| Hydroides (Eucarphus) microtis Mörch, 1863 |
| Hydroides (Eucarphus) sanctaecrucis Kröyer, 1863 |
| Hydroides (Eupomatus) Philippi, 1844 |
| Hydroides (Eupomatus) gairacensis Augener, 1934 |
| Hydroides alatalateralis (M.L. Jones, 1962) |
| Hydroides bispinosa Bush, 1910 |
| Hydroides bispinosus Bush, 1910 |
| Hydroides brachyacantha Rioja, 1941 |
| Hydroides brachyacanthus Rioja, 1941 |
| Hydroides californicus Treadwell, 1929 |
| Hydroides chilensis Hartmann-Schröder, 1962 |
| Hydroides cruciger Mörch, 1863 |
| Hydroides crucigera Mörch, 1863 |
| Hydroides deleoni Bastida-Zavala & ten Hove, 2003 |
| Hydroides dianthus (Verrill, 1873) |
| Hydroides dirampha Mörch, 1863 |