| Scientific Name | Author | English Name |
|---|---|---|
| Hedylopsis ballantinei | Sommerfeldt & Schrödl, 2004 | |
| Hedylopsis microhedyle | unspecified | |
| Hedylopsis riseri | Morse, 1976 | |
| Hedylopsis spiculifera | (Kowalewsky, 1901) | |
| Microhedyle glandulifera | (Kowalevsky, 1901) | |
| Microhedyle milaschewitschii | (Kowalevsky, 1901) | |
| Parahedyle cryptophtalma | (Westheide & Wawra, 1974) | |
| Unela nahantensis | Doe, 1974 | |
| Unela remanei | Marcus, 1953 | Sand slug |