136 SOUTH AFRICAN MAMMALS 



of almost every so-called race can be picked out of one 

 herd in the Northern Transvaal ? So far as I can see 

 from our records, the heavily marked form (selousi) is 

 never found in Bechuanaland on the one side nor Zulu- 

 land on the other ; and, if it coiold be proved that the 

 joining of the barrel stripe with the median belly line was 

 constant in both the dark and light forms (i.e., lightly and 

 heavily marked), as seems to be the case, then this migbt 



be used as the determining factor, and two species, or 

 sub-species, recognized, named burchelli and chapnianni. 

 The Zebras from the Eustenburg district of the Trans- 

 vaal are of the lightly-marked variety, so far as our 

 records go, and are therefore in this particular nearer 

 the Bechuanaland form. Only large series from the 

 various localities can settle this question definitely, but 

 for me there is only one, or at most two, varieties of 

 Burchell's Zebra. 



The height of Burchell's Zebra at the shoulder is 

 4 feet, and the total length of the head and body 8 feet 



