| Megalomma Johansson, 1926 |
| Megalomma bioculatum (Ehlers, 1887) |
| Megalomma carunculata Tovar-Hernández & Salazar-Vallejo, 2008 |
| Megalomma circumspectum (Moore, 1923) |
| Megalomma coloratum (Chamberlin, 1919) |
| Megalomma heterops Perkins, 1984 |
| Megalomma lobiferum (Ehlers, 1887) |
| Megalomma pacifici (Grube & Örsted, 1859) |
| Megalomma pigmentum Reish, 1963 |
| Megalomma quadrioculatum (Willey, 1905) |
| Megalomma vesiculosum (Montagu, 1815) |
| Metachone Bush, 1905 |
| Metachone mollis Bush, 1905 |
| Metalaonome Bush, 1905 |
| Metalaonome brunnea Treadwell, 1917 |
| Myxicola Renier, 1847 |
| Myxicola infundibulum (Renier, 1847) |
| Notaulax Tauber, 1879 |
| Notaulax bahamensis Perkins, 1984 |
| Notaulax californica (Treadwell, 1906) |