| Parent | Category | Figures | |
|---|---|---|---|
| 1 | Otala | lactea | 1784 |
| 2 | Otala | punctata | 57 |
| 3 | Otala | fauxnigra | 47 |
| 4 | Otala | depageana | 43 |
| 5 | Otala | ahmarina | 27 |
| 6 | Otala | freydieri | 26 |
| 7 | Otala | polita | 24 |
| 8 | Otala | lucasi | 22 |
| 9 | Otala | praelongata | 19 |
| 10 | Otala | riffensis | 16 |
| 11 | Otala | derenica | 13 |
| 12 | Otala | alabastra | 10 |
| 13 | Otala | gebiletana | 8 |
| 14 | Otala | sphaeromorpha | 8 |
| 15 | Otala | romalea | 6 |
| 16 | Otala | connollyi | 4 |
| 17 | Otala | tigris | 3 |
| 18 | Otala | hofmanni | 1 |
| 19 | Otala | houtiana | 1 |
| 20 | Otala | dupotetiana | 1 |
| 21 | Otala | constantinae | 1 |
| 22 | Otala | bleicheri | 1 |
| 23 | Otala | astcia | 1 |
| 24 | Otala | steppica | 1 |
| 25 | Otala | abrolena | 1 |
| 26 | Otala | xanthodon | 1 |