214 CLASS MAMMALIA. 



in the form of a sloping spatula. It lives at Bor- 

 neo in great troops, which assemble morning 

 and evening on the branches of the great trees 

 on the banks of rivers. Kahau is its cry. It is 

 also said to belong to Cochin-China. 



Another Guenon, fully as large as the last, is 

 distinguished by having no callosities on the 

 posteriors. This is 



The Douc, or Cochin-China Monkey. (Simia Nemczus, L.) 

 Buff. XIV. xli. 



The most agreeably coloured of all the monkeys. 

 Body and arms grey; neck red and black; 

 yellow tufts on each side of the head ; black 

 band upon the forehead ; thighs, hands, and 

 feet, black; legs red, and a large triangular 

 spot upon the crupper, together with the tail, 

 white. It inhabits also in Cochin-China; Douc, 

 or Dok, signifies monkey in that country. 



The Baboons 



Have cheek pouches and callosities like the Guenons, 

 but their muzzle is more salient, and to their last 

 cheek tooth in the under range, there is an addi- 

 tional unequal tubercle. They vary in the length 

 of the tail, and in that of the muzzle. The generality 

 of them are more or less ferocious, and all have a 

 bag which communicates with the larynx, under the 

 tyroid cartilage, and which is filled with air when 

 they cry. We divide them as follows: 



