| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Thoracostoma angustifissulatum Mawson, 1956 |
Antarctic | ||
| Thoracostoma anocellatum Schurmans-Stekhoven & Mawson, 1954 |
Antarctic Indian Ocean | ||
| Thoracostoma coronatum (Eberth, 1863) |
Northeast Atlantic | ||
| Thoracostoma trachygaster Hope, 1967 |
Southeast Pacific |