| Hydroides gracilis (Bush, 1905) |
| Hydroides humilis (Bush, 1905) |
| Hydroides lambecki Bastida-Zavala & ten Hove, 2002 |
| Hydroides lunulifer (Claparède, 1870) |
| Hydroides microtis Mörch, 1863 |
| Hydroides mongeslopezi Rioja, 1958 |
| Hydroides mucronatus Rioja, 1958 |
| Hydroides norvegica Gunnerus, 1768 |
| Hydroides ochotereana Rioja, 1941 |
| Hydroides ochoterena Rioja, 1941 |
| Hydroides panamensis Bastida-Zavala & ten Hove, 2003 |
| Hydroides parvus (Treadwell, 1902) |
| Hydroides protulicola Benedict, 1887 |
| Hydroides recurvispina Rioja, 1941 |
| Hydroides sanctaecrucis Kröyer, 1863 |
| Hydroides similis (Treadwell, 1929) |
| Hydroides similoides Bastida-Zavala & ten Hove, 2002 |
| Hydroides tenhovei Bastida-Zavala & de León-González, 2002 |
| Hydroides trompi Bastida-Zavala & ten Hove, 2003 |
| Janua de Saint-Joseph, 1894 |