THE LANGURS. 



135 



of the hands, the rump, posterior region of the loins, and the 

 tail pure white ; the lower portion of the hind-limbs to the 

 middle of the feet reddish-brown. Tail shorter than the body. 

 Length of body, 25 inches; of tail, 20^ inches. 



In the skull the forehead is low, the intra-orbital region broad 

 and the facial portion broad at the base. {Anderson.) The 

 thumb is well developed. The foetus is remarkable for its 

 motley coloration, and shows also the white rump-spot. 



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 (187 1); Schl., Mus. Pays-Bas, vii., p. 32 (1876); 

 Anderson, Zool. Res. Exped. Yun-nan, p. 4 (1878). 



Characters. — Similar to S. nemceus, 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 bor- 

 dering the Mekong river towards its mouth. 



