Douglass: ^'I•;R^^:nKA^Ks krom Montana 'I'ikiiarn. 



I.")l 



tions of the nasals, were put together ami it ai)i)ears that the nasals 

 were reduced and shortened, in this respect being intermediate be- 

 tween Hyrachyus and Frotapirus. The anterior upper i)ortion of the 

 skull is broadly and evenly convex. 



The longitudinal portion of the mandible is robust, but it contracts 

 just in front of the anterior premolar, making the symphyseal region 

 small. The ascending portion is broad. The angle extends a little 

 below the posterior lower border of the horizontal ramus. The last mo- 



FlG. 



Hyrachyus prisciis. No. 784. Sage Creek Beds. One half natural size. 



lar is considerably in advance of the ascending ramus The masseteric 

 fossa extends nearly down to the level of the molars. 



The animal was old and not all of the structure of the teeth can be 

 made out on account of their worn condition. The worn surfaces of 

 the upper incisors are oblong-oval or elliptical. They stand in a 

 nearly vertical position as in the tapir. They are all nearly of the 

 same size. The premolars are very much like those of //. axrarius. 

 P' is small. P- is the only one which appears to have a tendency to 



