| Grubeosyllis rugulosa Verrill, 1900 |
| Grubeosyllis vieitezi (San Martín, 1984) |
| Haplosyllides Augener, 1924 |
| Haplosyllides floridana Augener, 1924 |
| Haplosyllis Langerhans, 1879 |
| Haplosyllis agelas Uebelacker, 1982 |
| Haplosyllis floridana (Augener, 1924) |
| Haplosyllis spongicola (Grube, 1855) |
| Inermosyllis San Martín, 2003 |
| Inermosyllis curacaoensis (Augener, 1927) |
| Inermosyllis mexicana (Góngora-Garza & de León-González, 1993) |
| Langerhansia Czerniavsky, 1881 |
| Langerhansia beneliahui Campoy & Alquézar, 1982 |
| Langerhansia cornuta Imajima, 1966 |
| Langerhansia garciai Campoy, 1982 |
| Levidorum Hartman, 1967 |
| Levidorum hartmanae Perkins, 1987 |
| Levidorum pettiboneae Perkins, 1987 |
| Myrianida H. Milne-Edwards, 1845 |
| Myrianida arborea (Westheide, 1974) |