| Nominal Species (n = 5) | Present allocation (n = 5) | Ref. |
|---|---|---|
| Dentalium aequatorium Pilsbry & Sharp, 1897 | Rhabdus aequatorius | 1821 |
| Dentalium dalli Pilsbry & Sharp, 1897 | Rhabdus dalli | 1821 |
| Dentalium perceptum Mabille & Rochebrune, 1889 | Rhabdus perceptus | 1821 |
| Dentalium rectius Carpernter, 1864 | Rhabdus rectius | 1821 |
| Dentalium toyamaense Kuroda & Kikuchi, 1933 | Rhabdus toyamaense | 1821 |