Species and Subspecies of Zebras. 49 
and conclusions mentioned in the foregoing pages. ‘The 
species have been arranged in accordance with my views as to 
their affinities. In my opinion Grévy’s zebra stands apart 
from all the rest, the common mountain zebra having less 
affinity with it than with those of the Burchell type, although 
helping 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 Burchell’s the common 
zebra is most related, though for choice one would suggest 
one of those that occur to the north of the Zambesi—perhaps 
Crawshayi—in which there are no shadow-stripes. It is inter- 
esting to note in connexion with the subspecies of Burchell’s 
zebra that from north to south there is a gradual lessen- 
ing of the stripes both in intensity and extension, the gradation 
from Crawshayt to Selousid and thence through Chapmanni 
and Wahlberg? 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 
nostrils, contrasting sharply with the darker 
EMiite OE CHOP MEAMH Ss. chads vicld eta ciecw adiss oa wae Assgs. (Central Asia 
to Somaliland.) 
6. 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 Somaliland 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-patchesil, J. 4445 65 oad le nace Grevyt. (Abyssinia 
and Somaliland.) 
b'. 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. f 
