48 Mr. R. I. Pocock on the 
once from both of the East-African forms established by 
Mr. de Winton. 
(4) Equus Grevyt, Oustalet. 
Equus Grevyi, Oustalet, ‘La Nature,’ x. p. 12, 1882. 
This species, the most northerly of the zebras inhabiting 
Abyssinia and Somaliland, is strikingly different from the 
rest of the group (see figures in Proc. Zool. Soc. 1882, p. 721, 
and 1890, p. 413). The flanks and quarters are covered with 
a great number of narrow deep brown stripes separated by 
still narrower interspaces. The belly is free from transverse 
stripes as in the mountain zebra (1. zebra) ; but upon the 
quarters there are no broad obliquely longitudinal stripes, 
such as are seen in the last-named species and the various 
forms of , Burchell, the bands upon the upper half of this 
area being vertical (transverse), resembling both in size and 
direction those of the flanks; on the lower half of the quarters 
they assume a longitudinal direction, and are continued thence 
on to the hind Jegs, which, like the fore pair, are closely 
striped to the hoof inside and outside. Again, the spinal 
stripe, narrow behind the withers, is very broad over the 
saddle and rump, but broader on the saddle, where it fuses 
with the flank-stripes, than on the rump, where it is separated 
by a very wide space on each side from the upper ends of the 
quarter-stripes. The tail is not striped at the sides, but 
spotted, and its tuft is composed of black and white hairs. 
Connected with the markings on the head there are two pecu- 
liarities :—Firstly, the muzzle is not black, as in the other 
species (? the quagga), but greyish, and not many shades 
darker than the pale ground-colour of the rest of the head ; 
and, secondly, the stripes continued from the forehead on to 
the nose usually fail to meet the muzzle-patches, being at 
most connected with them by very fine lines. Lastly, the 
nostril-patches are not black, as stated by Matschie (Zool. 
Garten, xxxv. p. 71), but tan-coloured. 
So far as structural features are concerned, in ‘addition to 
the greater length of the face and ears as compared with the 
other zebras, this species is quite peculiar for the minute size 
of those bare patches of skin above the knee on the fore legs, 
which in England are spoken of as warts or chestnuts. 
The British Museum has skins and heads of this species 
from Berbera and from Durhi, Ogardain, 3000 feet alt., in 
Somaliland (Capt. Swayne), as well as a mounted specimen 
shot by Col. Paget in this same country. 
The subjoined table gives a summary of the chief characters 
OO EE Ee 
