MAMMALS 



415 



Photograph by E. R. Sanborn, N. Y. Zool. Soc. 



FIG. 104. Persian wild ass; showing the dorsal stripe which appears to be a 

 primitive character in the Equidae. 



Photograph by E. R. Sanborn, N. Y. Zool. Soc. 

 FIG. 195. Grant's zebra (Equus burchclli grand). 



