THE EDENTATA, OK ANIMALS POOR IN TEETH. 115 



both they bear witness to the peaceful habits of a 

 plant-eater, and the unmistakable agreement in the 

 type of skull leaves but little space for a brain, 

 even in the Giant Sloth. 



But what a difference in the limbs! Of the 

 character of these limbs in the two species, Mega- 



FIG. 9. Skull of the Three-toed Sloth. Nat. size. 



therium and Mylodon, and of the mode of life of 

 these animals as it has to be imagined from the 

 limbs, Owen gives an admirable account. We will 

 here quote his description of the Primeval Sloths 

 which supplements our knowledge of the nature 

 and habits of the living species, even though it 

 may not give any direct explanation of them. 



