| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Caecum biminicola | Pilsbry, 1951 | synonym | No | junior synonym |
original combination |
| Caecum decussatum | Folin, 1868 | synonym | No | junior synonym |
original combination |
| Caecum plicatum | Carpenter, 1858 | accepted name | Yes | senior synonym |
original combination |
| Caecum termes | Heilprin, 1889 | synonym | No | junior synonym |
original combination |
| Elephantanellum plicatum | (Carpenter, 1858) | synonym | No | senior synonym |
new combination |