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Size large, form graceful. Colour nearly all over white, the only parts 
which are of the usual rufous shade being the neck and anterior back, the 
sides and rump gradually shading off into white. Head and ears white, a 
faint rufous tinge on the centre line of the face. Neck deep rufous all 
round, except for a white spot on its anterior surface. Lower part of fore legs 
faintly rufous, rest of limbs and whole of tail white. Kmnee-brushes present. 
Skull, basal length in an immature male 8°85 inches, greatest breadth 4:15, 
muzzle to orbit 5:3. 
Horns of male thick, curved strongly backwards below, then hooked 
inwards and forwards above. Horns of female almost equally long, but 
comparatively thin, slightly curved, and not hooked terminally. 
Hab. Dongola and Sennaar. 
In concluding our account of the true Gazelles we come, at the end of the 
list, to a small but attractive group of three species which are closely related 
to one another, and take each other’s places as representatives in the different 
countries where they have been found. ‘These three Antelopes are certainly 
nearly allied, and it is by no means improbable that, although all the 
accessible specimens known to us are distinguishable, intermediate forms will 
ultimately be found to link them together. It is especially likely that this 
will prove to be the case with the two western species, G. dama and G. mhorr. 
All the three species of this group are exceedingly rare in collections, and 
we have been able to obtain but very little information about them, and 
very little material for comparison, the British Museum being badly off for 
specimens of all of them. It is to be hoped, however, that the prospective 
opening of the Soudan, by France on one side and England on the other, will 
lead to an increase of our knowledge of this group of Antelopes, and of the 
many other interesting forms of the great North-African desert. 
We will commence our account of these three Gazelles with the one which 
inhabits the eastern part of the Soudan, where our own countrymen may soon 
be expected to meet with it. 
The first notice of the existence of a species of this form in North- 
eastern Africa appears to have been given by Lichtenstein, who read a paper 
on the Antelopes of Northern Africa before the Academy of Sciences of Berlin 
on March 11th, 1824. Amongst the four Antelopes discussed in this learned 
