| Acanthocarpus Stimpson, 1871 |
| Acanthocarpus alexandri Stimpson, 1871 |
| Calappa Weber, 1795 |
| Calappa angusta A. Milne-Edwards, 1880 |
| Calappa convexa de Saussure, 1853 |
| Calappa flammea (Herbst, 1794) |
| Calappa gallus (Herbst, 1803) |
| Calappa saussurei Rathbun, 1898 |
| Calappa springeri Rathbun, 1931 |
| Calappa sulcata Rathbun, 1898 |
| Calappidae H. Milne-Edwards, 1837 |
| Calappula Galil, 1997 |
| Calappula saussurei (Rathbun, 1898) |
| Cryptosoma Brullé, 1839 |
| Cryptosoma bairdii (Stimpson, 1860) |
| Cryptosoma garthi Galil & Clark, 1996 |
| Cycloes De Hann, 1837 |
| Cycloes bairdi Stimpson, 1860 |
| Cycloes bairdii Stimpson, 1860 |
| Cyclozodion Williams & Child, 1990 |