336 Dr. T. Cantor on a species of Semnopithecus. 



busque ischiaticis iiigris ; palpebris labiisque lacteis, uti halonibus 

 circumdatis, tarsis palpebrarum nigris ; phalangibus digitorum 

 primis membrana inter se junctis. 



Juvenis : Pallidior ; crista occipitis cinerea, facie nigro-cserulescenti. 



Neonatus : Nitide fulvus. 



The colour of tbe face, ears, hands and feet, and of the ischiatic 

 callosities is intense shining black. The back and external sur- 

 face of the extremities blackish or dark brownish ash, as well as 

 the chest and the inner side of the extremities. The tail is cylin- 

 drical, with a small terminal tuft of a lighter ash-colour. The 

 skin is milky-white, and is left to view on the abdomen, which is 

 thinly covered with ash-coloured hairs. The forehead is com- 

 pletely hidden by hairs, so closely adpressed to the skull, that 

 they appear as if they had been brushed backwards to the occiput, 

 which is covered by a long crest of grayish hairs lying flat down 

 the back, unless agitated by the movements of the head, when 

 they may be said to " stand on end." The eyebrows are promi- 

 nent, rendered more so by a ridge or bandeau of long, half-erect, 

 diverging, shining black hairs. The eye is dark brown, nearly 

 black, of great brilliancy, heightened by the milky-white colour 

 of the eyelids, which forms a broad halo, bordered by the black 

 tarsus and eyelashes. A similar broad halo is formed by the 

 white lips and chin. These white markings, which are most de- 

 veloped in the young, impart a very singular expression to the 

 physiognomy. The nose is a little prominent. The nostrils open 

 laterally, and the fleshy part between them is elevated. 



The lips and chin have a short grayish beard ; the cheeks are 

 covered with long, backwards pointing whiskers, which nearly 

 hide the black, rather large ears. The thumbs of the anterior 

 extremities are very minute. The first phalanges of the four 

 fingers are united by an interdigital membrane sufiiciently lax 

 to allow of the fingers being widely separated. This character 

 exists not only in the different species of Gibbons and Monkeys 

 enumerated by the author of ' The Natural History of Monkeys, 

 Opossums and Lemurs,^ but also in Semnopithecus cristatus, 

 Horsfield {Simia cristata, Raffles), Cercopithecus {Macacus) cyno- 

 molgus, Ogilby, and Papio nemestrinus {Simia aygula), Ogilby. 

 It is however difficult to recognise in preserved specimens, in 

 which it becomes shriveled, and may therefore easily escape ob- 

 servation. The sexes of the present species appear not to differ 

 in colour or size. The young ones are of the same but paler co- 

 lours, and the face is blackish blue. Immediately after birth the 

 colour is a shining fulvous. The fur consists of long soft hairs 

 of a silky texture. This species is very common on the hills and 

 forests of the Malayan Peninsula, Prince of Wales Island, and 

 other neighbouring islands. The dimensions of the adult are : — 



