CHAPTER V. 

 THE OLD WORLD MONKEYS. 



THE LONG-TAILED MONKEYS— THE GENUS SEMNOPITHECUS — THE PROBOSCIS MONKEY — THE DOUC— 



THE GENUS COLOBUS — THE GUEREZA. 



1EAVING the anthropoid or tailless apes, we now proceed to 

 consider, the remaining apes of the Old World. The old world 

 — ^ monkeys differ from the anthropoid apes by the shortness of 

 their arm, the presence of tails and gluteal callosities, and, in many 

 instances, of cheek pouches. The "gluteal callosities" are those bare 

 and hard plates which are seen on the posterior parts of these animals, 

 and on which they rest when sitting. The cheek pouches are sacks, 

 more or less capacious, between the cheeks and the jaws, in which they 

 place their food when they wish to reserve it. Like the tailless apes, 

 the tailed monkeys of the Old World have the same " dental formula " as 

 we ourselves possess ; and their tails are not prehensile or able to lay 

 hold of anything. As a rule they are sagacious, but mischievous and 

 ungraceful, and very destructive. Hence some nations regard them 

 with fear and abhorrence, others regard them as sacred or divine. 



The apes described in this chapter differ, as we have said, from the 

 anthropoid apes by the possession of a tail : they differ also from those 

 which will be hereafter described in the length of this appendage and 

 in the use they make of it. The tail in these genera is usually very long ; 

 it is habitually raised, and serves as a balance. 



They are divided into two families, of which the first or Semno- 

 PITHECID.(E are distinguished by the absence of cheek pouches. 



I.— GENUS SEMNOPITHECUS. 



The genus Semnopithecus (from the Greek words scmnos, grave, 

 and pithecus, ape) is found in Asia. They are slender, with long limbs. 



