8 OLDFIELD THOMAS 



out by its describers , that animal lias a partially naked ear, 

 very short furry part of tail, and comparatively large posterior 

 premolars, in all of which points Ph. leucippus more or less 

 resembles it. But a comparison of the two skulls shows that 

 Ph. gymnotis is very considerably larger, while its posterior 

 premolars, though undoubtedly more developed than in Ph. >>/■/'<•, >- 

 talis, are of nothing like the exceptional size they attain in /'//. 

 leucippus. The canines of the two forms are alike in their 

 position and development. 



