_Kobus defassa_, =Gray=, Ann. Mag. N. H. (1) xviii. p. 232 (1846); =Hengl.= Ant. u. Büff. p. 15 (1863); =id.= Reise, ii. p. 109 (1877); =Fitz.= SB. Ak. Wien, lix. pt. 1, p. 176 (1869); =Matschie=, Sitz. Ges. nat. Fr. 1892, p. 134. _Kobus defassus_, =Jackson=, in Badm. Libr., Big Game Shooting, pp. 285, 304; =Jent.= Cat. Ost. Leyd. Mus. (Mus. de P.-B. ix.) p. 130. _Cobus defassus_, =Flow. & Lyd.= Mamm. p. 140; =Lyd.= Horns and Hoofs, p. 224 (1893) (partim). _Cobus defassa_, =Matschie=, Säugeth. Ost-Afr. p. 124 (1895); =Scl.= P. Z. S. 1893, p. 727; =id.= P. Z. S. 1895, p. 868 (Lake Stephanie). _Kolus sing-sing_, =Gray=, List Mamm. B. H. p. 159 (1843) (partim). _Kobus sing-sing_, =Gray=, Cat. Ung. B. M. p. 99 (1852); =id.= Cat. Rum. B. M. p. 15 (1872); =id.= Hand-l. Rum. B. M. p. 87 (1873); =id.= Knowsl. Men. p. 15 (1850) (partim). _Kobus sing-sing_ (?), =Scl.= P. Z. S. 1864, p. 101 (Uganda, _Speke_). _Ant. defassa_, var. _abyssinica_, =Wagn.= Schreb. Säug. v. p. 435 (1855). VERNACULAR NAMES:--_Defassa_ (Amharic) of the Abyssinians; _Om hetehet_ (Arabic), converted by Baker into _Mehedéhet_; _Bura_ or _Chora_ in Kordofan; _Kuru_ and _Nsumma_ in Uganda. Size large, about 46 to 50 inches in height at the withers. Above rufous brown, hairs at base greyish white; belly and inner side of limbs white; rump white. Face above chestnut-red, sides of face and eye-stripe white. Ears long (about 8 inches), pointed, rufous at back, white inside; line round nose and chin white. Hairs on neck long and harsh. Feet below knees blackish brown, passing into black towards the hoofs; tail above like the back, otherwise whitish, about 12 inches long, tuft of hairs beyond 4 inches. _Female_ similar but without horns; teats four (_Rüppell_). _Hab._ Western Abyssinia, Sennaar, Kordofan, and the Nile valley, south to Uganda and British and German East Africa.