250 WASATCH FAUNA. 



The foramina ovale and hichrymale are rather largo. There are two in- 

 fraorbital canals, lying beside each other, and issuing by two foramina ex- 

 terna. The external appearance justified this conclusion, but the lact was 

 demonstrated when I accidently broke away the anterior border of one of 

 the orbits. This displayed the two canals filled with matrix their entire 

 length. The anterior foramen externum is anterior to and above the pos- 

 terior, and both are above the first (third) premolar tooth. The lachrvmal 

 foramen is above the space between that tooth and the canine. 



The crown of the canine tooth is a cone with a very oblique base, and 

 a convex anterior face. The base rises behind, and the posterior face has 

 on the median line a low angular edge. The internal cone of the third 

 (first) premolar is not so prominent as that of the second, though large. 

 The external cusps of both premolars rise directly from the external base. 

 They are flattened cones, with anterior and posterior cutting edges. The 

 crowns are a little contracted at the middle, so as to be narrower than the 

 inner lobe of the tooth, which is narrower than the external portion. Both 

 premolars have delicate anterior, posterior, and external cingula. The ex- 

 ternal cusps of the true molars rise directly from the external base, and, 

 like those of the premolars, have a regularly lenticular section. At the 

 internal base of each one is a small intermediate tubercle, which is con- 

 nected by an angular ridge with the single internal cusps. There are deli- 

 cate anterior, posterior, and external cingula, but no internal. The poste- 

 rior cingulum shows a trace of enlargement at its inner part, which is well 

 marked on the second molar, but it is not as prominent as in many Creo- 

 dont genera. The posterior external cusp of the last true molar is reduced 

 in size. Taking the molars together, the first true molar is the largest, and 

 they diminish in size both anteriorly and posteriorly. The third true molar 

 is a little smaller than the first (third) premolar. Enamel smooth. 



Measurements. 



M. 



Length of rraiiiiiiii to occipital prominence above paroccipital process, and minns premazillarr 



boiio f^2S0 



Total width at posterior border of orbit, below (i240 



LfMi;;tli of piiliitu from front of canine tooth , 0116 



Width of palate jind ]ir>niiltiniato molars 012.'> 



Length of suixTior molar wrics 001)5 



Length of superior true niolars 0060 



