FAUNA AMERICANA. 35 



exist two ver}"^ small tubercles, one before, the 

 other behind ; the external or lateral incisor the 

 smallest of all, simply conic, slightly compressed, 

 and recurved at the point, placed at some distance 

 from the incisor in form of a canine. 



Four inferior incisors flattened, projecting and 

 scooped ; the lateral lay in part horizontally on 

 the intermediate, slightly elevated at the extreme 

 border. 



Three conical teeth, (false molars, or false ca- 

 nines) in the upper jaw on each side, separated 

 from each other, rather wide, and furnished each 

 with a small pointed lobe at base, and one also 

 posteriorly; five teeth in the lower jaw on each 

 side, similar to these, separated from each other ; 

 the first being largest, in which only it resembles 

 a canine, having three lobes, the principal of 

 which is intermediate, the first nearly effaced, and 

 the posterior slightly projecting; the second near- 

 ly similar, but shorter and more compressed, with 

 the posterior lobe more apparent than in the pre- 

 ceding ; the third has four lobes, a small one an- 

 teriorly ; a second, the largest of all, and the most 

 apparent, and two small ones posteriorly; the 

 fourth nearly like the third, with this difference, 

 that the first posterior lobe is more internal, which 

 makes the tooth thicker; the fifth differs from the 

 first only in being broader, nearly equal to the 

 first molar; four superior true molars on each 

 side, composed each of two folds of enamel, form- 



