220 THE GEOGRAPHY OF MAMMALS 



agree together in possessing the same number of teeth and 

 the same general structure of these organs as Man, who, 

 if considered only from a material point of view, must 

 certainly be referred to the same group of animals. 



On the other hand, the two families of Quadrumana 

 belonging to the New World have each of them a dentition 

 peculiar to themselves and different from that of the 

 Catarrhine Monkeys, to which they are inferior in every 

 point of organization. The first of these two families, the 

 Cebidze, have been designated " Platyrrhines," in reference to 

 the broad septum which separates the nostrils from each 

 other, and thus distinguishes them from the Catarrhine 

 Monkeys of the Old World. The second family of New 

 World Monkeys, the Marmosets, are unquestionably the 

 lowest of the Quadrumana, and have some superficial 

 resemblance to the Squirrels and other Rodents. 



Section III. — Distribution of the Old World 

 Monkeys 



The Catarrhine Monkeys, as already stated, are re- 

 stricted to the Old World, and in present days, as we 

 shall see, mainly to the tropics, though a few species 

 are found farther north, and other forms, now extinct, 

 have left their remains in the tertiary and post-tertiary 

 formations of more temperate countries. 



The Catarrhine Monkeys form two families, the 

 Simiidiz or Man-like Apes, and the Cercopithecidee or 

 Monkeys proper. The Man-like Apes, in the present con- 

 dition of the world's surface, are confined entirely to the 

 equatorial Regions of Africa and Asia. They are usually 



