1909.] 



DIFFERENTIATION OF ZEBRAS. 



549 



British East Africa as far south as the River Tana, is covered 

 with narrow stripes (text- fig. 140), and its ears are more ass-like 

 than those of the other two species, though its feet are more like 

 those of the horse. In many specimens thei-e are small stripes 

 coming out from the dorsal stripe over the croup, but there are 

 distinct variations in coloration between the Somali, Shoa, and 

 British East Africa sj^ecimens. 



The Mountain Zebra (text-fig. 141) is also striped all over its 

 body and legs, but the stripes on the haunches difier completely 

 from those of the Grevy species, whilst a chief characteristic is 

 the small stripes on its croup termed its " gridiron." 



Text-fig. 142. 



Ward's Zebra (^Bariiigo). 



In a skin procured from Mr. Rowland Ward, Prof. Ewart found 

 an animal almost the same as the Sovith African Mountain Zebra, 

 which he named Ward's Zebra. There is some doubt as regards 

 the provenance of this skin. It first appeared to have come from 

 Somaliland, but I embodied in my ' Origin and Influence of the 

 Thoroughbred Horse ' (p. 508) a note from Prof. Ewart stating 

 that it came from the Lombori Hills, which form the southern 

 edce of the Naivasha Plateau near the Uganda Railway m 

 Bntish East Africa. Of its provenance I will say more later on. 



