56 



THE GEOGRAPHY OF MAMMALS 



species of the group, which is found all through the Region, 

 from Southern Mexico to La Plata. 



The third Order of mammals — the Edentata — is highly 

 characteristic of the Neotropical Region. Of the five 



Fig. 7.— The Quica Opossum. 



(Didelphys opossum.) 



generally recognised families two belong entirely to the 

 Old World ; the other three — the Sloths, the Ant-eaters, 

 and the Armadilloes (which are more nearly allied to one 

 another than to the two Old World families) — are, with 

 the exception of one species of Armadillo (Tatusia 



