THALAKCTOS 



299 



elongate. Palate noticeably broader than in Ursus arclos, a 

 character made more conspicuous by the relative weakness of the 

 teeth. Mandible with no special peculiarities except that the 



FIS. 54. 

 Thalarctos maritimus. X J. 



lower margin is nearly straight throughout, the posterior concavity 

 being very slightly indicated, and lower border of angular process 

 only a little elevated above general outline. 



Teeth. — While the general character of the dentition differs 



