| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Halonympha atlanta Allen & Morgan, 1981 |
Atlantic Ocean | 0.37 | |
| Halonympha congenita (Smith, 1885) |
Western Atlantic | ||
| Halonympha depressa (Jeffreys, 1882) |
Northeast Atlantic and the Mediterranean Sea |