Female.—Like the male. The young differ but little from the parents. Aged individuals retain the coloration of their maturity.
Distribution.—Northern Cochin-China; Hainan. (Meyer.)
Habits.—The Douc goes about in large troops.
XXVI. THE BLACK-FOOTED LANGUR. SEMNOPITHECUS NIGRIPES.
Semnopithecus nigripes, A. Milne-Edwards, Nouv. Arch. Mus. vi., p. 7 (1871); Schl., Mus. Pays-Bas, vii., p. 32 (1876); Anderson, Zool. Res. Exped. Yun-nan, p. 4 (1878).
Characters.—Similar to S. nemæus, but differing in having the posterior limbs black, and the fore-arms grizzled, instead of white. The whiskers are short and black, the body more slender, longer, and entirely white. The hind-limbs are also more elongated. Both sexes are alike; and the young differ little from the adults.
The brain-case is depressed, the face short, and the inter-orbital swelling peculiar to so many of the crested Semnopitheci, is wanting.
Distribution.—Saigon in Cochin-China, and the forests bordering the Mekong river towards its mouth.
XXVII. THE BLACK-CRESTED LANGUR. SEMNOPITHECUS MELANOLOPHUS.
Simia melalophus, Raffles, Tr. Linn. Soc., xiii., p. 244 (1821).