| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Cadulus quadrifissatus | Pilsbry & Sharp, 1898 | synonym | No | senior synonym |
original combination |
| Polyschides quadrifissatus | (Pilsbry & Sharp, 1898) | accepted name | Yes | senior synonym |
new combination |
| Siphonodentalium quadrifissatum | (Pilsbry & Sharp, 1898) | synonym | No | senior synonym |
new combination |