436 



THE VERTEBRATE SKELETON. 



in Hydromys and certain other forms, in which the formula is 



.10 02 



i y c -: pm - m - , total 1 2. The hares and rabbits are the 



VI 



FIG. 84. CABNASSIAL OR SECTOEIAL TEETH OF CARNIVORA (from 

 FLOWER). 



Upper sectorial teeth of I. Felts, II. Cams, III. Ursus. 1. anterior, 

 2. middle, 3. posterior cusp of blade, 4. inner lobe supported on distinct 

 root, 5. inner lobe posterior in position and without distinct root, 

 characteristic of the Ursidae. 



Lower sectorial teeth. 1. Fells, 2. Cauls, 3. Herpestes. 1. anterior, 

 2. posterior lobe of blade, 3. inner tubercle, 4. heel. 



