622 



THE CARNIVORES 



and thus but little different in form from the corresponding teeth of the dogs. The 

 most important difference from the bears occurs, however, in the form of the flesh- 

 tooth in both jaws ; these teeth being very similar to those 

 of the dogs, and of a thoroughly carnivorous type. Whereas, 

 however, the upper flesh-tooth of the dogs has but two lobes 

 to its cutting blade, that of the hysenarctus had three such 

 lobes. That the hysenarctus was a thoroughly carnivorous 

 animal, there can be no reasonable doubt. Another Miocene 

 Carnivore, known as the hernicyon, has still more dog-like 

 teeth ; and the transition from this animal to the planti- 

 grade and dog-like amphicyon is, therefore, scarcely more 

 than a step, so that the passage from the dog-like bears 

 to the bear-like dogs is practically complete. 



THE LEFT UPPER MOLAR 

 TEETH OF A SMALL 

 SPECIES OF 

 ARCTUS. 



(After Koken.) 



