THE EDENTATA, OK ANIMALS POOR IN TEETH. 113 



nearest relatives, in those days, lived in the southern 

 centre of distribution where they continue to live 

 up to the present time or whether the migration 



FIG. 8. Skull of the Giant Sloth. One-tenth nat. size. 

 After d'Alton. 



from the north southwards was the origin of the 

 present distribution. 



The limbs of our present leaf-eating Sloths are 

 most perfectly adapted for clutching hold of the 



