_Cercopithecus ludio_, Gray, P. Z. S., 1849, p. 8, pl. ix., fig. 1; id.,
P. Z. S., 1868, p. 182; id., Cat. Monkeys Brit. Mus., p. 21 (1870),
Wagner, in Schreb., Säugeth. Suppl., v., p. 51 (1855); Sclater, P. Z. S.,
1893, p. 245.
_Cercopithecus ascanias_, Schl., Mus. Pays-Bas, vii., p. 87 (1876).
CHARACTERS.--Spot on lower half of nose large, oblong, higher than broad.
General colour of fur black or dark greenish-olive, minutely speckled with
greyish-yellow. Face and lips blackish-blue, the nose-spot white; ridge of
nose above the white spot, superciliary band, crown of head, shoulders and
fore-limbs, black; outer and inner aspects of hind-limbs and extremity of
tail black; chin, chest, inner side of the upper part of the arms, and
under side of body, whitish; {49}whiskers black; rump and under side of the
base of the tail rufous.
Distinguished from _C. petaurista_ by its black limbs, reddish rump and
base of tail.
DISTRIBUTION.--West Africa: Cameroons and the Delta of the Niger.