ODD-TOED UNC4ULATES (pEKISSODACTYLA) 265 



Africa there are two species : the Nubian Avild ass and 

 tlie wild ass of Sonialiland. It is from the Nubian 

 wild ass that our friend tlie donkey is descended. 



Fig. 59. — Chapman's Zebra. (Photo, from life.) 



Africa is the liome of the zebras. There are 

 three species : the mountain or common zebra, 

 Bur ch ell's zebra, and Grevy's zebra. 



Chapman's zebra (Fig. 59) is striped in the same 

 way as the common zebra, but it has also shadow 

 stripes between the dark bands, which are clearly 

 seen in the figure. 



