| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Falsitromina simplex | (Powell, 1951) | synonym | No | senior synonym |
new combination |
| Sipho simplex | Verrill, 1884 | synonym | No | senior synonym |
original combination |
| Tromina simplex | Powell, 1951 | synonym | No | senior synonym |
original combination |
| ! Volutopsius castanea | (Morch, 1858) | synonym | No | senior synonym |
new combination |
| Volutopsius castaneus | (Morch, 1858) | accepted name | Yes | senior synonym |
new combination |
| Volutopsius simplex | Dall, 1907 | synonym | No | junior synonym |
original combination |