254 



DOUGLASS — FOSSIL MAMMALIA 



The canine is long and slender but not curved backward toward the apex. P 2 has 

 a high crown as in H. cruentus and H. horridus. It has no heel and is therefore nearly 

 like that of the former species. The anterior border is only slightly convex longitu- 

 dinally. The posterior is concave as in that species. There is a small tritocone on I >:! , 

 and the rudiment of a deuterocone supported by an inner root. In P 4 the tritocone, 

 the deuterocone and its supporting root are all larger. There is no antero-external basal 

 cusp. 



The lower canine curves backward. P T is small and low, P-y bends backward. It 

 is higher than P-y. P T is much larger and higher than P.,. 



Measurements. 



V ri-KTi Jaw. 



M. 



Length of upper series of teeth, exclusive of incisors 094 



Length of upper molar-premolar scries 083 



Length of upper premolar series 053 



Length of upper canine • .012 



Width of upper canine 0083 



Height of crown of upper canine .026 



Length of I"- 009 



Height of crown of I" 007 



Length of P* 0125 



Height of P* 014 



Length of ps 0135 



Height of P^ 010 



Length of P ' 013 



Height of 1" 011 



Length of M ' 013 



Height of M ! 01.0 



Length of M* ' 017 



Height of M 2 Oil 



Lower Jaw. 



Length of lower series of teeth, exclusive of incisors 



Length of lower molar-premolar series 



Length of lower premolar scries 



Length of lower molar scries 



092 



090 



052 



039 



Length of lower canine 011 



Width of lower canine 0095 



Length of P T ; . .008 



Height of l\ 004 



Length of P, 011 



Height of Pj oio 



Length of I', 0125 



Height Of IV. 011 



Length of l\ 0133 



