| Scientific Name | Author | English Name |
|---|---|---|
| Coronadena mutabilis | unspecified | |
| Kaburakia excelsa | unspecified | Giant flatworm |
| Leptostylochus pacificus | (Kato, 1943) | |
| Mexistylochus levis | unspecified | |
| Stylochus californicus | Hyman, 1953 | |
| Stylochus ellipticus | unspecified | |
| Stylochus exiguus | Hyman, 1953 | |
| Stylochus franciscanus | Hyman, 1953 | |
| Stylochus frontalis | unspecified | |
| Stylochus oculiferus | unspecified | Spotted flatworm |
| Stylochus tripartitus | unspecified | |
| Stylochus zebra | unspecified |