OUAKARI MONKEYS 



S6l 



species B. rubicund us at any rate has an absolutely as well as 

 a relatively greater length of intestines and caecum than any 

 other American j\Ionkey known. 



Not the least remarkable fact about these Ouakari Monkeys is 

 their distribution in South America. We cannot do better than 



Fig 267 —White nosed balu Pithecia albmasa xi {-pvom Natme) 



quote the summary given by Messrs. P. L. and W. L. Sclater in 

 their Geography of Mammals, which is as follows: "Each of 

 them, as first shown by Bates and afterwards further explained 

 by Forbes, is limited to a comparatively small tract of forest on 

 the banks of the Amazon and its affluents. The Black-headed 

 Ouakari (B. melanocephahi.s) . is met with only in a tract 



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VOL. X 



