210 THE HORSE AND ITS RELATIVES 



the races of the bontequagga this zebra (pi. xix. 

 fig. i) is distinguished by the larger number of main 

 stripes on the body and hind-quarters, and also by 

 the absence of any backward bending (except in the 

 last of the series) of the stripes on the middle of 

 the body (about ten in number) as they approach the 

 dorsal stripe, to which they run approximately at 

 right angles. In this respect Foa's zebra approxi- 

 mates to the zebra and Gravy's zebra, from both 

 of which it differs by the stripes on the hind- 

 quarters adjacent to the dorsal stripe running 

 parallel with the latter in the direction of the tail, 

 as in the bontequagga, instead of at right angles. 

 Consequently, the gridiron-pattern of the true 

 zebra, and the concentric stripe arrangement of 

 Gravy's zebra in this region are wanting. In the 

 general build, as well as in the shape of the head and 

 ears, Foa's zebra is nearer to the bontequagga than 

 to either of the other two species ; this being borne 

 out by the fact that the body-stripes meet the stripe 

 traversing the middle line of the under surface. 

 The legs are barred to the fetlocks, and the pasterns 

 black. By Mr. Pocock ^ Foa's zebra is regarded as 

 related to the Nyasa bontequagga, E. b. crawshayi. 

 The marked difference between the markings of 

 Foa's zebra and the Masai bontequagga is well 

 exhibited in plate xix. 



Although, as mentioned above, the title of typical 



^ Harmsworth Natural History^ p. 789. 



