Taurotragus derbianus (Gray, 1847) . Ann. Mag. Nat. Hist., [ser. 1], 20:286.

TYPE LOCALITY: Gambia .

DISTRIBUTION: Formerly, Gambia to S Sudan and NW Uganda; now in Senegal to Guinea and Cameroon to S Sudan; may survive in S Mali and NE Nigeria.

STATUS: U.S. ESA and IUCN - Endangered as T. d. derbianus; IUCN - Vulnerable as Tragelaphus derbianus gigas .

SYNONYMS: cameroonensis, colini, congolanus, gigas .

COMMENTS: Regarded as conspecific with T. oryx by Haltenorth (1963:86), but usually treated as a full species; see Ansell (1972:26).