I9I5-] 



LOWER PLIOCENE SNAKE CREEK BEDS. 



95 



sharply angular instead of a flowing curve as in D. borealis. Lower 

 jaw of practically the same size as in that species and dentition 

 not specifically separable therefrom. 



The inclusion in the same new species of type material not 

 found associated is most unsafe. In this instance it seems justi- 

 fiable because the collections made by two parties (American Mu- 

 seum and Princeton) have shown the presence of but one species 

 of Dromomeryx in the Snake Creek beds, the so-called Palceomeryx 

 of Matthew and Cook being undoubtedly Dromomeryx and not 

 separable from the new species here described. 



^77 3, 



/>¥. 



2. 



Fig. i8. Dromomeryx zvhitfordi, paratype, right ramus of the lower jaw, 

 side view, and crown view of the teeth, two thirds natural size, No. 12086. 

 The distance from Pa-mgis a little greater in the crown view, owing to elimi- 

 nation in the drawing of the fore-shortening due to curvature of dental series. 



..11. 

 Measurements. 



Width of horn-base across middle of wing-like process 7^ 



Anteroposterior diameter of beam three inches above base ... 30 



Transverse diameter of beam three inches above base 25 



Legnth, p^-mj measured as chord of arc 109 



Length, m^-mg 67y2 



P2, anteroposterior 12%, transverse 6% 



Pj, anteroposterior 14^, transverse 10 



Pj, anteroposterior 15, transverse 10^ 



m^' anteroposterior 17, transverse 14 



m^' anteroposterior igVi, transverse 15 



mj, anteroposterior 31, transverse 15 



Depth of jaw beneath pg 31 



Depth of jaw beneath mj 31^ 



Princeton University, April, 191 5. 



