THE KAHAU OB PBOBOSOIS MONKEY. 159 



of the individuals ; wmie, siiuttttt farthei t,xammatioR 

 prove that it is really distinct, they propose to designate 

 it as a second species, under the title of N. recurvus, 

 or turned-up proboscis monkey. 



The kahau is a native of the Island of Borneo, and 

 is still rare in collections. It is^a gregarious animal, 

 and is said to assemble in large troops, at sunrise and 

 sunset, upon the trees bordering rivers. They are 

 possessed of great activity, and dart from tree to tree, 

 springing to a distance of fifteen or twenty feet. They 

 utter continued cries, somewhat similar to the expres- 

 sion of the common name which has been applied to 

 them. 



Our plate is taken from that of Audibert. 



The other animal we alluded to, which appears to 

 possess all the characteristics of the first division of 

 the Guenons, is, 



