| Costellaria Swainson, 1840 |
| Costellariidae McDonald, 1860 |
| Latiromitra Locard, 1897 |
| Latiromitra meekiana (Dall, 1889) |
| Mitromica Berry, 1958 |
| Mitromica dicksoni G. Rosenberg & R. Salisbury, 2003 |
| Mitromica foveata (G. B. Sowerby II, 1874) |
| Mitromica gratiosa (Reeve, 1845) |
| Mitromica solitaria (C. B. Adams, 1852) |
| Pusia Swainson, 1840 |
| Pusia dermestinum (Lamarck, 1811) |
| Pusia epiphanea Rehder, 1943 |
| Pusia puella (Reeve, 1845) |
| Pusia sykesi (Melvill, 1925) |
| Pusia venusta Sarasúa, 1978 |
| Pusiolina Cossmann, 1921 |
| Pusiolina aresta Rehder, 1943 |
| Thala H. Adams & A. Adams, 1853 |
| Thala floridana (Dall, 1884) |
| Thala gratiosa (Reeve, 1845) |