| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Mecynoecia brevicula Canu & Bassler, 1929 |
Western Central Pacific | ||
| Mecynoecia delicatula (Busk, 1875) |
Western Central Atlantic, Pacific and the Mediterranean | ||
| Mecynoecia proboscideoides (Gabb & Horn, 1862) |
Western Central Atlantic |