| Scientific Name | Author | English Name |
|---|---|---|
| Ceratoplana colobocentroti | unspecified | |
| Copidoplana paradoxa | unspecified | |
| Copidoplana tripyla | unspecified | |
| Diplandros singularis | unspecified | |
| Euplana gracilis | unspecified | |
| Freemania litoricola | unspecified | |
| Leptoplana chloranota | unspecified | |
| Leptoplana schizoporellae | Hallez, 1893 | |
| Leptoplana tremellaris | (Müller, 1774) | |
| Leptoplana vesiculata | unspecified | |
| Macginitiella delmaris | unspecified | |
| Notoplana acticola | (Boone, 1929) | |
| Notoplana atomata | (Müller, 1776) | |
| Notoplana celeris | unspecified | |
| Notoplana inquieta | unspecified | |
| Notoplana kuekenthali | (Plehn, 1896) | |
| Notoplana longastyletta | unspecified | |
| Notoplana natans | unspecified | |
| Notoplana rupicola | unspecified | |
| Notoplana sanguinea | unspecified | |
| Notoplana sanjuania | unspecified | |
| Notoplana saxicola | (Heath & Mcgregor, 1912) | |
| Parviplana californica | unspecified | |
| Phylloplana viridis | unspecified | Green flatworm |
| Stylochoplana gracilis | unspecified | |
| Stylochoplana parasitica | unspecified | |
| Zygantroplana angusta | unspecified |