| Nothria geophiliformis (Moore, 1903) |
| Nothria guadalupensis Fauchald, 1968 |
| Nothria hartmani Kirkegaard, 1980 |
| Nothria hiatidentata Moore, 1911 |
| Nothria iridescens (Johnson, 1901) |
| Nothria mexicana Fauchald, 1968 |
| Nothria occidentalis Fauchald, 1968 |
| Nothria pallidula Hartman, 1965 |
| Nothria pycnobranchiata McIntosh, 1885 |
| Nothria pygidialis Fauchald, 1968 |
| Nothria quadricuspis Sars, 1872 |
| Nothria rubescens (Augener, 1906) |
| Nothria setosa (Kinberg, 1865) |
| Nothria similis Fauchald, 1968 |
| Nothria sombreriana McIntosh, 1885 |
| Nothria stigmatis (Treadwell, 1922) |
| Nothria stigmatis subsp. cirrata Hartman, 1944 |
| Nothria textor Hartman & Fauchald, 1971 |
| Nothria vibex Fauchald, 1972 |
| Onuphidae Kinberg, 1865 |