| Parent | Category | Figures | |
|---|---|---|---|
| 1 | Opeas | hexagyrum | 92 |
| 2 | Opeas | species | 67 |
| 3 | Opeas | javanicum | 13 |
| 4 | Opeas | striatissimum | 11 |
| 5 | Opeas | arctispirale | 10 |
| 6 | Opeas | pyrgula | 7 |
| 7 | Opeas | lineare | 1 |
| 8 | Opeas | nutans | 1 |
| 9 | Opeas | filare | 1 |
| 10 | Opeas | funiculare | 1 |
| 11 | Opeas | crystallinum | 1 |
| 12 | Opeas | goodalli | 1 |
| 13 | Opeas | suturale | 1 |
| 14 | Opeas | utriculus | 1 |
| 15 | Opeas | setchuanense | 1 |
| 16 | Opeas | mariae | 1 |
| 17 | Opeas | pumilum | 1 |