CHARACTERS.--MALE.--Body-hairs long and rough; upper surface black, with pale fulvous annellations, except on a line between the shoulders, which is nearly black; ears nearly nude, with an inner hairy pencil; nose, upper lip, chin, and throat, pure white; rest of the under surface and of the limbs and tail black, {70}except the base of the tail, which has ringed hairs like the back all round. Length of body, 21 inches; of tail, 24 inches. (_Sclater._) FEMALE.--Nearly similar, but smaller, and having the hairs less ringed on the back and the head. (_Sclater._) Distinguished from _C. albigularis_ by its white nose and upper lips, black under surface, and blacker limbs. DISTRIBUTION.--North-east Africa: Kaffa, a province to the south of Shoa; and Gimma, a province in Central Abyssinia, to the south of Gojan. XXV. CAMPBELL'S GUENON. CERCOPITHECUS CAMPBELLI. _Cercopithecus campbelli_, Waterh., P. Z. S., 1838, p. 61; Fraser, Zool. Typ., pl. iii. (1848); Martin, Mammif. An., p. 544 (1841); Wagner in Schreber Säugeth. Suppl., v., p. 47 (1855); Gray, P. Z. S., 1868, p. 182; id., Cat. Monkeys Brit. Mus., p. 24 (1870); Schleg., Mus. Pays-Bas, vii., p. 82 (1876); Jentink, Notes, Leyden Mus., x., p. 9 (1888); Sclater, P. Z. S., 1893, p. 251. _Cercopithecus burnetti_, Gray, Ann. N. H., x., p. 256 (1842). CHARACTERS.--Fur long, longer on the hinder part of the back than on the front, separated along the back--the hairs black with broad yellow rings. Face bluish-black; lips flesh-coloured; band across the forehead white, washed with rufous--the hairs tipped with black; head as far as the nape of the neck, yellowish-brown; the fore part of the back brownish-black, the lower part of the back, the outer side of the hind-legs, the fore-legs, and basal third of the tail olive-black, washed with yellow; the long hair on the cheeks and side of the neck, which partly conceals the ears, greyish-white, ringed towards the tips with black and {71}yellow; the inner side of the ears furnished with long yellow-flecked grey hairs; the chest, throat, under side of the body, inner side of limbs and fore part of the thighs white; posterior two-thirds of the tail yellowish-grey, the hairs ringed with black and faded yellow, those of the under side with brown and grey; tip of the tail with a small black tuft. DISTRIBUTION.--West Africa: from Sierra Leone to the Gold Coast. HABITS.--This is the commonest Monkey, both in the interior and on the coast of this region of Africa. It frequents the moderate-sized trees of the forest in troops of fifty or more in number; and it occasionally even takes to the water of its own accord. XXVI. THE SAMANGO GUENON. CERCOPITHECUS SAMANGO.