GRE VY'S ZEBRA 



49 



It will be evident from this that the stripes on the rump hav^e their 

 concavity directed upwards (fig. 15), whereas in the next species the 

 convexity is upwards. 



Two races, or subspecies, of Grevy's zebra have been defined, 

 namely, the typical Abyssinian race and the Somali E. grevyi bcr- 

 berensis. In the former the stripes are black and the interspaces 

 white, like the under-parts. In the latter the stripes are dark brown and 

 the interspaces buff, and thus distinctly darker than the lower surface. 



Fig. 15. — Grevy's Zebra. 



Mr. A. H. Neumann remarks that Grevy's zebra lives chiefly in 

 open or sparsely wooded country ; and although near the Tana it is 

 found in more bushy ground, it always avoids anything like thick bush. 

 Mainly an animal of the arid plains, it sometimes frequents bare stony 

 hills, but always in barren country where the grass is short. The 

 bonte-quagga, on the other hand, may be found in all kinds of 

 country, except dense forest and extensive scrubs where there are no 

 open spaces and no grass. The foals are usually born in August or 

 September, though a new-born foal has been seen in May. The 

 number in a herd is not usually very large, ranging from about half- 

 a-dozen to as many as twenty, or occasionally thirty. 



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