156 



THE GEOGRAPHY OF MAMMALS 



history, we ascertain that the genus Didelphys was formerly 

 found both in Europe and in North America during Eocene 

 and Miocene times, so that it is possible that the Virginian 



Fig. 30. — The Prong-buck. 

 (A ntilocapra americana. ) 



opossum may be a survivor rather than an intruder in 

 North America. 



The next order, the Edentates, is represented in this 



