Peterson: Material Discovered in Uinta Basin. 107 



dec]-), and not of the thick and round character met with in tlie recent 

 tapir. The symphysis is solidly fused and there is a long and sharp 

 edentulous border between the front and the cheek-teeth. The 

 actual contact is lost between the anterior and posterior portions of the 

 lower jaws. 



Unfortunately the symphysis of the jaws is broken back of the front 

 teeth so that their characters or number cannot be stated. This is 

 also true of the canine and the anterior premolars. F^, however, is 

 completely preserved. Its crown is submolariform, the tetraconid 

 being absent. Externally the base of the crown has a light cingulum, 

 while internally the tooth is smooth. The molars are well represented; 

 their cross-crests are perfectly formed and sharp. As in the upper 

 molars, there are anterior and posterior cingula, while internally and 

 externally the teeth are more or less smooth. The hypoconulid 

 of Mtt may be said to be only a heavy cingulum. 



M EASUREMENTS. 



Total length of skull fragment 123 mm. 



Length of skull from end of premaxillary to anterior border of orbit, 



approximately 73 



Length of alveolar border U to and including M'* approximately 95 " 



Length of diastema between incisors and canine 8 



Length of diastema between canine and P- 16 



Length of premolar series 26 



Length of molar series 30 " 



Antero-posterior diameter of canine at base of crown 5 " 



Transverse diameter of canine at base of crown 3 " 



Antero-posterior diameter of P- 4.5 " 



Transverse " " " 3 " 



" P^ 7 



Antero-posterior " " " 7 " 



" P^ 7-5 " 



Transverse " " " approximately 8 " 



" P' 9-5 " 



Antero-posterior " " " 8 



" ' "Ml 9 



Transverse " " " 10 



" M? II 



Antero-posterior " " " 10 



" M-* 9 



Transverse " " " 10.5 



Depth of lower jaw at M ' , approximately 19 



" " " " M,, " 21 



Antero-posterior diameter of P.j 8 



