[902.] 



Osl>or>], American Eocene Primates. 



207 



Another specimen (No. 2557 6, Amer. Mus.) shows that 

 the enlarged incisor is still a spatulate tooth with the enamel 



Fig. 31. Mixodectes pungens. Am. Mus. No. 25571^. Left lower jaw. Median 

 incisor partly displaced. 



completely surrounding the crown and a persistent fang 

 (Fig. 31). Still another specimen (No. 3083 Amer. Mus.) 

 gives a better view of 

 the molar teeth. 



(Sp. 52) Mixodectes 

 crassiusculus Cope. — 

 The type, No. 3087 

 Amer. Mus., consists 

 of the posterior por- 

 tion of the right and 

 left rami of the lower 

 jaws containing molar 

 teeth. This specimen 

 gives a perfect view 

 of the structure of 

 the molars, showing 

 that they are even 

 more specialized than 

 those of Cynodonto- 

 mys and Microsyops 

 in the degeneration 

 of the paraconid. 



Fig. 32. Mixodectes crassiusculus. Am. Mus. Cope, 

 No. 3087. Parts of right and left rami. 



