| Salasiella guadalajarensis Pilsbry & Cockerell, 1926 |
| Salasiella hinkleyi Pilsbry, 1920 |
| Salasiella margaritacea (Pfeiffer, 1856) |
| Salasiella minima Pilsbry, 1907 |
| Salasiella modesta (Pfeiffer, 1862) |
| Salasiella pfeiffeti Yihbry, 1899 |
| Salasiella pulchella (Pfeiffer, 1856) |
| Spiraxidae H. B. Baker, 1939 |
| Spiraxinae H. B. Baker, 1939 |
| Spiraxis C. B. Adams, 1850 |
| Spiraxis (Versutaxis) H. B. Baker, 1939 |
| Spiraxis (Versutaxis) futilis H. B. Baker, 1939 |
| Spiraxis (Volutaxis) Strebel, 1882 |
| Spiraxis (Volutaxis) nitidus Strebel, 1882 |
| Spiraxis (Volutaxis) nitidus subsp. persulcatus H. B. Baker, 1940 |
| Spiraxis (Volutaxis) tenuecostatus H. B. Baker, 1940 |
| Spiraxis (Volutaxis) tenuecostatus subsp. obesus H. B. Baker, 1940 |
| Spiraxis (Volutaxis) tenuecostatus subsp. tenuecostatus H. B. Baker, 1940 |
| Spiraxis acus Shuttleworth, 1852 |
| Spiraxis auriculacea Pfeiffer, 1856 |