| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Cassidea royana | Iredale, 1914 | synonym | No | senior synonym |
original combination |
| Semicassis royana | (Iredale, 1914) | accepted name | Yes | senior synonym |
new combination |
| ! Semicassis royanum | (Iredale, 1914) | synonym | No | senior synonym |
new combination |
| Xenophalium royanum | (Iredale, 1914) | synonym | No | senior synonym |
new combination |