| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Onchidella armadilla (Mörch, 1863) |
Western Atlantic | 1.2 | |
| Onchidella borealis Dall, 1871 |
Northwest onchidella | Eastern Pacific | |
| Onchidella brattstroemi Marcus, 1978 |
Western Atlantic | 0.4 | |
| Onchidella carpenteri (Binney, 1860) |
Eastern Pacific | ||
| Onchidella celtica (Forbes & Hanley, 1852) |
Northeast Atlantic | ||
| Onchidella floridana (Dall, 1885) |
Florida onchidella | Western Atlantic | 2 |
| Onchidella indolens (Couthouy, 1852) |
Western Atlantic | 3 | |
| Onchidella marginata (Couthouy, 1852) |
Western Atlantic and Eastern Pacific | 1.5 | |
| Onchidella miusha Marcus, 1978 |
Western Atlantic | 0.25 | |
| Onchidella patelloides Quoy & Gaimard, 1832 |
Southwest Pacific | ||
| Onchidella wah Marcus, 1978 |
Western Atlantic | 0.35 |