U SIMIID^. 



surrounded by a dense ruff of hair which clothes the cheeks and the malar and 

 superciliary arches, and which is prolonged on towards the nose as a fine line 

 separating the muzzle from the circumorbital area. Superciliary region, sides of 

 face and of the neck to the shoulder, the area around the ears, the chin, throat, 

 and under surface of fore-limbs and upper surface of feet yellow, brightest on the 

 ears, the upper surface of the hands being more grey. A few black hairs on 

 the supercilium, and dark hairs on the forehead tipped with blackish, which 

 become more frequent on the vertex, and constitute a kind of skull-cap tending 

 to grey, with shining ferruginous hairs intermised. The same colour is prolonged 

 on to the nape and the upper surface of the shoulders, but on the back it 

 assumes a lustrous silvery hue, the ends of the hairs becoming very brilliant 

 yellowish grey, and this tint increases on the hinder part of the trunk. The 

 outside of the fore-limb is almost concolorous with the shoulder. Front of thighs 

 and legs yellowish grey. Callosities and outer posterior margin of the thighs 

 clear yellow. Under surface clear grey, lightly washed with yellow. Tail strong, 

 tufted, and deep grey at the base, mixed with yellowish grey as it approaches the 

 extremity, which is clad with long hairs of that colour. Female coloured as the 

 male, but less brilliant. In the young, the top of the head is paler, and the 

 yellowish grey of the sides of the neck spreads above and before the ears, and the 

 whiskers are black. In the very young there is no trace of a skull-cap. Thumb 

 extremely short. 



Ft. In. 



Length from tip of muzzle to root of tail . . . . 2 1'75 



„ of tail 1 9-00 



Inhabits Moupin (western portion) to Kokinoor. 



This species, one of the many remarkable animals discovered by that distin- 

 guished traveller M. I'Abbe A. David, was first described by A. M.-Edwards 

 as a Semnopithecus, but after reconsideration was elevated to generic rank, chiefly 

 on the ground of the different proportions of its limbs to the vertebral column 

 as compared with Semnopithecus and the greater length of the humeral over the 

 radial portion of the limb, which is the inverse of what prevails in Semnopithecus. 

 Nothing is known regarding the digestive organs, but the animal has no cheek 

 pouches, and A. M.-Edwards assumes from the absence of these structures that 

 the stomach will probably prove multilocular. I do not think that the dis- 

 proportions of the limbs indicated by A. M.-Edwards outweigh the structural 

 characters in which this form resembles Semnopithecus and more especially S, 

 {nasalis) larvatus, and if the stomach should ultimately prove to be multi- 

 locular, a most important point in organic similarity is established between it and 

 Semnopithecus. 



