the Cape Colony Qaaggas. 327 



a. Stripes on neck narrow, narrower than interspaces, not 

 ruaching- middle line of throat ; body with only a lew- 

 short stripes behind withers, its posterior portion neither 



striped nor spotted Danielli. 



a^. Stripes on ntck broad, as broad as interspaces, at least 



close to the mane, and extending to the middle line of the 



throat ; body with more or less distinct long stripes 



behind the withers. 



h. Stripes black, interspaces bright bay; neck-stripes 



thinning greally towards middle line of throat ; body 



■with strongly marked black stripes, those on its hinder 



half broken up into spots quagga. 



h^. Stripes brown, interspaces, at least on neck, creamy 

 yellow ; body much less distinctly striped. 

 c. Stripes exceedingly wide, those on the neck entire, 

 the interspaces forming- distinct but very narrow 

 lines on the head, neck, and at least the upper half 

 of the body ; stripes on the hind-quarters ex- 

 tending- as far back and having the same direction 



as in E. quagga Burchelli Lorenzi. 



c'. Stripes narrower, those on the neck fused or inter- 

 rupted, the interspaces forming moderately broad 

 bands, except when interrupted by shadow-stripes ; 

 the interspaces on the body behind the shoulder 

 almost as dark as the stripes, which are therefore 

 scarcely distinguishable and do not extend on to the 

 haunches Greyi. 



As an alternative the following table perhaps better ex- 

 presses the relationships of the four forms : — 



a. Ground-colour or interspaces bay or chestnut, stripes black 

 or blackish brown. 

 h. Stripes on neck and shoulders very short and narrow, 

 not reaching the middle line of the throat, and on the 



body scarcely passing- beyond the withers Danielli. 



b\ Stripes broad and long, on the neck reaching for the 

 most part the middle line of the throat and on the body 

 extending to the white of the belly, those on its poste- 

 rior half breaking up into large spots quagga. 



a}. Ground-colour or interspaces, at least of the neck, creamy 

 yellow ; stripes brown. 



c. Stripes exceedingly wide, &c. (as above) Lorenzi. 



c^. Stripes much narrower, &c. (as above) Greyi, 



It is not easy to point out the exact relationship between 

 these four forms. The two that depart farthest from the 

 typical Burchelli are Danielli on one side and Greyi on the 

 other, Lorenzi holding an intermediate position between 

 Burchelli and Greyiy and quagga a similar position between 

 Burchelli and Danielli. Quagga may have been derived 

 from Burchelli by an increase in the rufescence of the inter- 

 spaces all over the body, neck, and head, by the disappear- 

 ance of the stripes on the hind-quarters, and by the splitting 

 into spots of those on the posterior half of the body. The 



