| Species | Name Used |
|---|---|
| Spongiobranchaea australis d'Orbigny, 1834 | Spongiobranchaea australis (p. ) |
| Spongiobranchaea intermedia Pruvot-Fol, 1926 | Spongiobranchaea intermedia (p. ) |
| Tambja divae (Marcus, 1958) | Tambja divae (p. ) |
| Thordisa lurca (Marcus & Marcus, 1967) | Thordisa lurca (p. ) |
| Torellia delicata (Philippi, 1844) | Torellia delicata (p. ) |
| Trachypollia nodulosa (Adams, 1845) | Trachypollia nodulosa (p. ) |
| Turbonilla caroliniana Holmes, 1859 | Turbonilla caroliniana (p. ) |
| Turbonilla reticulata (Adams, 1850) | Turbonilla reticulata (p. ) |
| Tyrinna evelinae (Marcus, 1958) | Tyrinna evelinae (p. ) |
| Vokesimurex tryoni (Hidalgo, 1880) | Vokesimurex tryoni (p. ) |
| Waldo parasiticus (Dall, 1876) | Waldo parasiticus (p. ) |