disappears from human vision. I myself have seen a small herd of 

 Grevy Zebras standing under a tree in the Duke of Bedford's Park, 

 Woburn Abbey, with the sunshine glistening down on them against a 

 light background, become almost invisible. The vanishing effect is 

 only transitory, however, and from other points of view they again be- 

 come conspicuous. 



The Grevy is readily distinguished as the largest of the zebras. It is 

 characterized by delicate striping, a very long head, and very large, 



rounded ears, like those of 

 many other forest-loving ani- 

 mals. Its narrow striping 

 contrasts very strongly with 

 the broad and brilliant stripes 

 of the Grant zebra, which, 

 as shown in Fig. 6, so com- 

 pletely surround the body 

 that they unite with a black 

 line extending along the under 

 surface of the belly. Grant's 

 zebra, like the Grevy, has a 

 very conspicuous set of hori- 

 zontal stripes extending down 

 the legs to the hoofs, and is 

 thus readily distinguished 

 from the Chapman zebra in 

 which the lower portion of 

 the leg is quite pale. 



The Grant Zebra is typical of a very large group entirely distinct 

 from the Grevy and Mountain zebras. It is broadly known as the 

 Burchell group, the type of which was the zebra found and described by 

 the English explorer Burchell north of the Orange River, which roamed 

 north of that stream as the Quagga roamed to the south. In the 

 typical Burchell zebra (E. burchelli, now believed to be almost extinct) 



[34] 



FKS. .->. THE GREVY ZEBRA, FROM 

 ABYSSINIA 



Distinguished by sharply defined and very 

 numerous narrow white, and dark chocolate 

 stripes, and by a very heavy dorsal stripe 

 which is continued down the center of the tail. 



