| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Protis arctica (Hansen, 1879) |
Arctic and the Mediterranean Sea | ||
| Protis hydrotherma ten Hove & Zibrowius, 1986 |
Eastern Pacific | ||
| Protis hydrothermica Ten Hove & Zibrowius, 1986 |
Pacific Ocean | ||
| Protis simplex Ehlers, 1887 |
Western Central Atlantic | ||
| Protis torquata Hoagland, 1919 |
Western Central Atlantic |