180 University of California Publications in Geology [Vol. 9 



plications (fig. 15). The anterior and inner faces are enamel-covered; 

 the outer face and a portion of the anterior one are naked. The 

 enamel of the inner face is covered with a layer of 

 cement filling the fold on this side. The outer face 

 is beveled obliquely. The beveled surface is faintly 

 grooved longitudinally. 



Measurements of No. 19799 



Length of crown 9.7 mm. 



Anteroposterior diameter 2. 



, r T Transverse diameter 3.7 



Fig. 15. Lepus, 



near vetus Kel- 

 logg. Cheek- The form represented by the specimen measured is 



tooth, 10^19799, considerably smaller than the type of Panolax sanctae- 



Mountain beds. Maei from the Upper Miocene of New Mexico, and is 

 Stewart Valley . , .„ „ ■-. 



Nevada quite certainly specifically distinct. 



Rhinocerotidae 



Two forms known by astragali representing this group are found 

 with the Cedar Mountain fauna, but the systematic position within the 

 group is doubtful in both cases. In addition to these forms a number of 

 tooth fragments and several foot bones (no. 22284) from near locality 

 2028 about four miles north of Stewart Spring represent a large 

 rhinoceros with short feet approaching the Teleoceras type. 



Fig. 16. Aphelops?, sp. A. Astragalus, no. 19824, X M>. Cedar Mountain 

 beds, Stewart Valley, Nevada. 



Fig. 17. Aphelops?, sp. B. Astragalus, no. 19822, X V- 2 . Cedar Mountain 

 beds, Nevada. 



Fig. 20. Hypohipptis, near osborni Gidley, M 2 ?, occlusal view, no. 19763, 

 natural size. Cedar Mountain beds, Stewart Valley, Nevada. 



