Chapter VII: The White-Thighed Guereza. Colobus Vellerosus

_Semnopithecus vellerosus_, Is. Geoffr. in Bélang. Voy. Mamm., p. 37
(1830).

{95}_Semnopithecus bicolor_, Wesmael, Bull. Acad. Sc. Brux., ii., p. 236
(1835).

_Colobus leucomeros_, Ogilby, P. Z. S., 1837, p. 69; Martin, Mammif.
Anim., p. 497 (1841).

_Colobus ursinus_, Temm., Esquiss. Zool. Guin., p. 21 (1853).

_Colobus vellerosus_, Is. Geoffr., Dict. H. N., iv., p. 116 (1849); id.,
Cat. Méth. Primates, p. 17 (1851); Gervais, H. N. Mamm., i., p. 65
(1854); Sclater, P. Z. S., 1860, p. 246; Reichenb., Naturg. Affen, p. 87
(1862); Matschie, S.B. Ges. Natur. Fr. Berlin, 1892, p. 226.

_Colobus bicolor_, Gray, P. Z. S., 1868, p. 181; id., Cat. Monkeys Brit.
Mus., p. 18 (1870); Schlegel, Mus. Pays-Bas, vii., p. 26 (1876);
Rochebr., Faun. Sénég., Mamm., p. 24 (1885).

_Guereza vellerosus_, Truess. Consp. Mamm., p. 10 (1879).

_Pterycolobus vellerosus_, Rochebr., _op. cit._, Suppl. Mamm., p. 125,
pl. x. (1887).

CHARACTERS.--Hair on the back, flanks, and loins, very long and silky; the fur everywhere deep black, excepting a frontal band, which coalesces with the long hair of the auricular region and sides of the neck, which are white, as well as the chin, the throat, a spot on each side of the buttocks, the external and posterior aspects of the thighs, and the short-haired tail, which is tufted at the tip; the thumbs very short, but distinct, and having a flat nail. Length of body, 28½ inches; of tail, 31 inches.

The young are similar in coloration to the adults, but the hair is not elongated.

{96}DISTRIBUTION.--West Africa: from the Gold Coast to Senegambia, where it is not uncommon.