SEMNOPITHECUS. 41 



thighs, hands and feet ; the anti-hrachium white, and the lower half of the hind 

 limb red or reddish brown. A large area on the rump immediately above the tail 

 involving its base and passing round to the groin, white, all the tail being similarly- 

 coloured. Head brown, with a narrow band of chestnut passing under the ears 

 backwards, and a broader band of the same colour, margined with black, posteriorly 

 passing over the chest from shoulder to shoulder ; the whiskers long, white, and 

 directed backwards. The face naked and lemon-coloured ; the callosities, palms, and 

 soles yellow. The hairs of the trunk are annulated with from 10 to 12 rings of 

 white and blackish. 



Ft. In. 



Length o£ body to root of tail .2 I'OO 



„ of tail 1 8-25 



Both sexes in this beautiful monkey, and in its near ally, >S'. nigripes, are alike 

 in colour, and the young differ but little from the adult. 



The skull has the forehead rather low and the interorbital space rather broad. 

 The facial portion is broad at the base, but rounded anteriorly. 



As is now well known, this animal presents all the structural features of 

 Semnopithecus. 



Inhabits the northern portion of Cochin China. The naturalists of the 

 ' Bonite ' encountered it in numerous troops near Tourane. 



Semnopithecus nigripes, a. M.-Edwards. 



Semnopithecus nigripes, A. M.-Edwards, Nouv. Arch. du. Mus. vol. vi, 1871, Bull, p. 7., Plate i. ; 

 Blyth., Jour. As. Soc. Beng. 1875, vol. xliv., ex. no. p. 11. 



In S. nigripes the posterior extremities are uniformly blackish from the origin 

 of the tail downwards, while in S. nemaeus the lower half of the limb is brown. 

 The anterior limbs are greyish black, uniformly speckled with white, whereas in 

 S. nemaeus the anti-brachium is white. The same general distribution of colour 

 prevails as in the last-mentioned species. The face is nude and appears to be 

 yellow as in the douc, and there is a frontal band of black hairs directed a little 

 forwards, but which, however, in S. nemaeus is less intense and more backwardly 

 recumbent. It also resembles the douc in having the base of the neck and front 

 of the breast surrounded by a black collar which is bordered with red, but the 

 whiskers of S. nigripes are black and shorter. 



The back, the flanks, and the belly are covered with clear brilliant grey hairs, 

 tending to fawn, and finely annulated with deep grey, often black. The precaudal 

 area is pure white, and contracts towards the tail, which is entirely white and very 

 long. 



The proportions between the skeleton of S. nigripes and S. nemaeus appear to 

 be very different, the limbs of the former being more elongated than those of the 

 latter. The skull is relatively much smaller and the brain-case is more depressed and 



