| Key | Title |
| 18 | Key to the species of citharines (Family Citharinidae, subfamily Distichodontinae) of southern Africa. |
| 1568 | Key to the species of Citharinus of West Africa. |
| 1569 | Key to the genera of Citharinidae of West Africa. |
| 1620 | Key to the genera of Distichodontidae of Lower Guinea, West-Central Africa. |