| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Ptychogena antarctica Browne, 1907 |
Antarctic | 10 | |
| Ptychogena aurea Vanhoeffen, 1912 |
Antarctic Pacific | 1.25 | |
| Ptychogena californica Torrey, 1909 |
Eastern Pacific | 9 | |
| Ptychogena crocea Kramp & Damas, 1925 |
Northeast Atlantic | 2.5 | |
| Ptychogena hyperborea Kramp, 1942 |
Northwest Atlantic and Antarctic | 1.5 | |
| Ptychogena lactea Agassiz, 1865 |
Arctic, Northern Atlantic and Northern Pacific | 9 | |
| Ptychogena longigona Maas, 1893 |
Northern Atlantic | 2.5 |