Tragelaphus derbianus - #990
Savanna of W Africa in Gambia (extinct), Guinea (extinct?), Guinea Bissau, SW Mali (extinct?), S Senegal, and Sierra Leone (formerly a vagrant); purported records from Ghana and Togo not accepted. C Africa in N Cameroon, Central African Republic, S Chad (extinct), N Dem. Rep. Congo, E Nigeria (extinct), SW Sudan, and NW Uganda (extinct).