FAUNA AMERICANA. 31 



CHARACTERS. 



r Incisor 2. 

 rsuperior 14. < Canine 6. 



2. Dental formula— Teeth 30 J i ^^^^ ^\ 



I C Incisor 4. 



inferior 16. < Canine 6. 



C. Molar 6. Desmarest. 



The two intermediate superior incisors very 

 strong and broad, plain and perpendicular to the 

 jaw, and truncated cuneiform ; the two external in- 

 ferior incisors, conical, straight, rather long, and 

 inclosing in their interval two very small, inter- 

 mediate incisors. A considerable intermediate 

 space in the upper jaw after the two large inci- 

 sors ; a less space in the lower jaw after the late- 

 ral incisors. 



First and third superior conical teeth, on each 

 side larger than the second ; inferior conical teeth 

 increasing from the first to the third. 



Crowns of the molars furnished with sharp tu- 

 bercles, the first being antero-posteriorly com- 

 pressed, is rather thin, and with two points only, 

 the one external, the other internal. 



Snout elongated, terminated with a cartilagin- 

 ous button. 



Eyes very small ; external ears wanting ; feet 

 very short, pentadactyle ; the anterior very broad, 

 having the fingers united to the last phalanx ; nails 

 long, flattened, linear, and proper for digging; in- 

 creasing from the thumb to the third finger, the 

 two remaining decreasing, the external the small- 



