196 
Ward, Horn Meas. (1) p. 108, (2) p. 150 (1896) ; Lyd. Horns and Hoofs, p. 236 
(fig., head) (1893) ; Swayne, P. Z.S. 1895, p. 805 (habits); id. Seventeen Trips 
to Somaliland, p. 314 (1895) ; Donaldson Smith, P. Z.S. 1895, p. 868 (Juba R.) ; 
Hoyos, Zu den Aulihan, p. 179, pl. x. fig. 6 (1895); Thos. Ann. Mus. Genoy. (2) 
xvii. p. 107 (1896); Elliot, Publ. Chicago Mus., Zool. i. p. 122 (1897). 
Antilope soemmerringii berberana, Matsch. SB. nat. Freund. 1893, p. 65 ; Rhoads, 
P. Ac. Philad. 1896, p. 519. 
Vernacutar Names :—Arab or Harab at Massowa, Bus-Adu in Danakil, Om-Sabah 
in Arabic (Heuglin) ; Aoul of Somalis (Swayne). 
Size large, height at withers 353 inches in an old male of the Somali 
subspecies. General colour very pale fawn, and very uniform everywhere, as 
there are neither light nor dark lateral bands nor any pygal bands. Central 
facial band black or blackish fulvous, contrasting markedly with the white 
lateral facial streaks. Dark facial streaks also black, but very narrow. Sides 
of muzzle black, continuous with the central facial band. Back of ears 
whitish, margined and tipped with black. White of rump very broad and 
extended, projecting far into the body-colour, which it broadly shuts off from 
the tail. The latter is white basally, black tufted terminally. Knee-brushes 
present, whitish or fawn. 
Basal length of skull 8°85 inches, greatest breadth 4:2, muzzle to orbit 5:4, 
Horns long, nearly circular in section, heavily ringed. In the typical 
subspecies they are but little divergent for their basal half, but then curve 
widely outwards above, their tips being again abruptly hooked inwards so as 
to point almost directly towards each other. In the Somali subspecies their 
length is greater and their divergence is quite even, not increasing above, so 
that their upper portions are not nearly so widely separated ; their tips also 
hook rather forwards, and not so directly inwards. 
Female similar to the male, but the horns much thinner and less rough, 
though almost as long as those of the maie. In both of the subspecies their 
curvature is closely similar to that found in their respective males. 
Hab. Coastland of Red Sea from Suakin south to Tajurah (subspecies 
typica) ; Northern Somaliland (subspecies berberana). 
This fine Gazelle was cne of the many discoveries made in North-east 
Africa by the great traveller and naturalist Edouard Riippell, and was first 
