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| No. | Valid Name | Author | English Name |
| 1. | Ratabulus diversidens | (McCulloch, 1914) | Freespine flathead |
| 2. | Ratabulus fulviguttatus | Imamura & Gomon, 2010 | Orange-freckled flathead |
| 3. | Ratabulus megacephalus | (Tanaka, 1917) | |
| 4. | Ratabulus ventralis | Imamura & Gomon, 2010 |