the Cape Colony Qanggas. \\21 



a. Stripes on neck narrow, narrower tlian inttirs])ar('«i, not 

 rt'achin|i- middle line of tliroat ; body witii only a few 

 short stripes bciiiiid withers, ltd posterior portion nfither 



striped nor spotted DanielU. 



a^. Stripes on nt ck broad, as broad as interspaces, at least 



close to tile inane, and extending to tlie middle lin'^of the 



throut ; body with more or less distinct long stripes 



behind the witliers. 



h. Stripes black, interspaces brigiit bay ; nt^ck-stripes 



thinning greatly towards middle line of tliroat ; body 



with strongly marked black stripes, those on its hinder 



half broken np into spots (piar/<ja. 



b^. Stri])i's brown, interspaces, at least on neck, creamy 

 yellow ; body mnch 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 liaviug the same direction 



as in E. quayya BurcheUi Lorenzi. 



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

 rupted, the interspaces forming moderated 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 Greiji. 



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. 



b. 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. 



bK 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 quugya. 



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 tour forms. The two that depart farthest from the 

 typical BurcJielli are Danielli on one side and Greyi on the 

 othei-, Lorenzi hohling an intermediate position between 

 BurcheUi and Greyi^ and quagga a similar jiosition between 

 BurcheUi and DanielU. Quagga may have been derived 

 from BurcheUi by an increase in the rufesconcc 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 .'^plittin^ 

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



