Kobus sing-sing, Gray, Ann. Mag. N. H. (1) xviii. p. 232 (1846); id. Knowsl. Men. p. 15 (1850); id. P. Z. S. 1850, p. 131; id. Cat. Ung. B. M. p. 99 (1852); id. Cat. Rum. B. M. p. 15 (1872); id. Hand-l. Rum. B. M. p. 87 (1873); Gerrard, Cat. Bones, p. 239.
Cobus sing-sing, Scl. Cat. Vert. p. 144 (1883).
Adenota sing-sing, Fitz. SB. Ak. Wien, lix. pt. 1, p. 174 (1869).
Cobus defassus, Lyd. Horns and Hoofs, p. 224 (1893).
Cobus defassa, Scl. P. Z. S. 1892, p. 471.
Cobus unctuosus, Scl. P. Z. S. 1893, p. 727.
Vernacular Name:—Sing-sing of the natives on the Gambia (Whitfield).
Height at shoulder from 39 to 45 inches. Body above sandy brown, hairs beneath whitish; flanks rather browner, in contrast to the conspicuous white rump. Upper part of the ears outside and their rims blackish, inside filled with long white hairs. Hairs of neck long and thin, rather paler in colour than the back. Front of face brown like the back, but rather darker; eye-stripe, line round the naked black muzzle, and chin white. Inner sides of limbs white. Feet below the knees blackish, with slight white lines round the hoofs. Tail thin, above brown like the back, beneath white, tip black; length about 14 inches.
Horns rising backwards nearly in a line with the forehead, then turning upwards, strongly ringed; length along the curve about 26 inches.
Female. Similar to male but hornless, and slightly smaller in size.