ALLEN : MAMMALIA : CANID^. 



157 



Measurements. — Fourteen adults, of which 11 are males and 3 are 

 females, taken by Mr. O. A. Peterson and measured by him in the flesh, 

 give the following dimensions (in millimeters) : 



External Measurements of Cerdocyon griseus. 



S/^u//. — The skull is slender and fox-like, with the rostral portion long 

 and narrow. In old skulls of both sexes the occipital crest is well devel- 

 oped across the central portion of the skull and there is a very short 

 sagittal crest. The dental armature is rather weak and delicate. There 

 are two well developed posterior cusps on pm^, one on pm^, with a slight 

 indication of a second, and none or only a slight trace of one on pm^- 

 In much worn teeth these all nearly or quite disappear through wear, 

 except the last posterior cusp of pm^^. M- is large, about half the size 

 of m-. 



Seven fully adult skulls give the following measurements : 



Measurements of Skulls of Cerdocyon griseus. 



"Am. Mus. Nat. Hist. 



