FIG. 4. THE PRINCE OF THE ZEBRA FAMILY, Equus grevyi 

 From photograph by Sanborn, in the Zoological Park 



erect mane and black stripe down the back. In fact, this black stripe 

 down the back so well shown also in the back view of the Grevy 

 Zebra (Fig. 5), is the most universal of all the color markings in the 

 family of horses. 



It is difficult to conjecture what advantage this dark brown or black 

 line brings to the animal. In all the accompanying photographs it 

 appears to shade off into the background. 



The very brilliant dark-brown stripes of the Grevy zebra, shown in 

 Fig. 4, certainly tend to make the animal very conspicuous as seen in 

 its yard; but from certain points of view, such as that of Fig. 4, where 

 the sunshine glances off the glistening hair, the white and brown stripes 

 on certain regions of the body entirely disappear. Those who strongly 

 believe in the color protection theory truly point out that in certain sur- 

 roundings this most brilliantly marked of all the mammalia almost 



