| Key | Title |
| 118 | Key to the species of stingrays (Dasyatidae) occuring in the Western Central Pacific. |
| 152 | Key to the genera of West African fresh- and brackish water Dasyatidae. |
| 153 | Key to the Dasyatis species of West Africa. |
| 888 | Key to species of stingrays (Dasyatidae) occurring in the Western Central Atlantic. |
| 1581 | Key to the species of Dasyatis of Lower Guinea, West-Central Africa. |