298 THE GEOGRAPHY OF MAMMALS 



of the genus Padua, distinguished from Cariacus by its 

 remarkable foot-structure, consists of two species, one from 

 Chili and Western Patagonia and the other from the hisfh 

 Andes of Ecuador. 



The Musk-Deer which constitute a second well-defined 

 sub-family of the CervidiB and should perhaps even be 

 recognized as a different family, contains only the genus 

 Moschus, with two species, which are restricted to the 

 Palrearctic Region. 



Section XL — Distribution of Chevrotains 



The Tragulidm, or Chevrotains, consist of a few animals 

 of small size, often known as Moose-Deer, which are 

 intermediate in structure between the Deer, the Camels, 

 and the Pigs. There are only two known genera of these 

 animals at present existing, of which one (Tragulas), with 

 about five species, belongs to the Oriental Region and the 

 other (Hyomoschus), with a single species, is peculiar to 

 Western Africa. The latter form is closely allied, if not 

 identical with the extinct Dorcatherium of the tertiaries of 

 the Old World, and is placed by some authorities in the 

 same genus. Other extinct forms of small Ungulates serve to 

 connect the Chevrotains, in former epochs, with the Deer. 



Section XII. — Distribution of the Camels 



The forms of the Camel family now existing are two 

 only, the true Camels of the Old World and the Lamas 

 of the New. These are now separate in structure as in 



