| Species | Name Used |
|---|---|
| Tricolia affinis (Adams, 1850) | Tricolia affinis (p. ) |
| Tricolia bella (Smith, 1937) | Tricolia bella (p. ) |
| Tridentata marginata (Kirchenpauer, 1884) | Sertularia inflata (p. ) |
| Tripneustes ventricosus (Lamarck, 1816) | Tripneustes ventricosus (p. ) |
| Trivia quadripunctata (Gray, 1827) | Trivia quadripunctata (p. ) |
| Trivia suffusa (Gray, 1832) | Trivia suffusa (p. ) |
| Tropiometra carinata (Lamarck, 1816) | Tropiometra carinata (p. ) |
| Turritriton labiosus (Wood, 1828) | Cymatium labiosum (p. ) |
| Uca speciosa (Ives, 1891) | Uca speciosa (p. ) |
| Ucides cordatus (Linnaeus, 1763) | Ucides cordatus (p. ) |
| Urosalpinx perrugata (Conrad, 1846) | Urosalpinx perrugata (p. ) |
| Vallicula multiformis Rankin, 1956 | Vallicula multiformis (p. ) |
| Vasum muricatum (Born, 1778) | Vasum muricatum (p. ) |
| Vermicularia spirata (Philippi, 1836) | Vermetus spirata (p. ) |
| Zoanthus sociatus (Ellis & Solander, 1786) | Zoanthus sociatus (p. ) |