Species and Subspecies of Zebras, 49 



and conclusions mentioned in the foregoing pages. The 

 S|)ecics have been arranged in accordance with mj views as to 

 tlicir affinities. In my opinion Gr(jvy's zebra stands apart 

 from all the rest, the common mountain zebra having less 

 affinity with it than with those of the Ihirchelli ty\)e, altliough 

 lu'lping in part to bridge over the interval between the two. 

 There seems, however, to be but little evidence to show to 

 which of the fully-striped subspecies of Burehell's the common 

 zebra is most related, though ibr choice one would suggest 

 one of those that occur to the north of the Zambesi — perhaps 

 CraicshoTji — in which there are no shadow-stripes. It is inter- 

 esting to note in connexion with the subspecies of Burehell's 

 zebra that from north to south there is a gradual lessen- 

 ing of the stripes both in intensity and extension, the gradation 

 from Craivshoyi to Selousii and thence through Chapmanni 

 and Wahlbergi or antiquorum to Burchelli being very striking, 

 the culminating point being reached by the quagga, which 

 resembles the true Burchelli in many points both of colour 

 and structure. 



a. Head, neck, and body, -with the exception of 



the spinal and sometimes the shoulder-stripe, 

 unstriped ; no longitudinal belly-stripe; 

 muzzle white, without patches above the 

 notjtrils, contrasting sharply with the darker 



tint of the head Asses. (Central Asia 



to Somaliland.) 



b. Head, neck, and, at all events, the fore part of 



the body distinctly striped ; a longitudinal 

 belly-stripe present ; muzzle usually black, 

 at all events not lighter than the ground- 

 colour of the face, with a conspicuous blotch 



of dark-coloured hair above the nostrils .... Zebras. (Abyssinia 



and SomaHland to 

 Cape Colony.) 

 a}. Warts on the fore legs very small ; stripes 

 on body and quarters narrow ; none of those 

 on the flanks bent backwards dorsally to 

 extend on to the quarters, the upper half of 

 which is covered -with vertical stripes 

 arranged concentrically and almost semi- 

 circularly around the root of the tail ; spinal 

 stripe very broad, broadest on the middle of 

 the back ; muzzle of a greyish tint ; stripes 

 on the nose practically stopping short of 



the nostril-patches Grevyi. (Abyssinia 



and Somaliland.) 

 h^. Warts on fore legs large ; stripes broader ; 

 quarters marked with obliquely longitu- 

 dinal stripes, the upper of which arise from 

 the posterior end of the body, where the 

 upper extremities of the stripes are bent 



Ann. & Mag. N. Hist. Ser. 6. Vol. xx. 4 



