342 
SAVAGE SUDAN 
I mention these details because, shortly after returning- 
home, at a meeting- of the Zoological Society (May 19th, 
1914) there were exhibited examples of hornless male 
oribi shot on this.same Dinder River in 1903. It was 
also stated that Sir S. Baker and von Heuglin had both 
been aware of the existence of this phenomenon. I have, 
however, been unable to find the reference-—Baker, in fact, 
never mentions the oribi at all. Still, in the light of the 
above note, it is conceivably possible that some of the 
many hornless oribi seen on the Dinder may have been 
males; without shooting 
them, it would be impos¬ 
sible to decide the point. 
On the Dinder the local 
name for oribi was digdig, 
which at first was mislead¬ 
ing. One evening after 
sundown I saw a pair of 
small blue-grey antelopes 
playing together, and was 
only prevented from secur¬ 
ing them by the failing 
light. At the time, I im¬ 
agined these were true 
dikdiks ; possibly, however, they may have been the little 
blue duiker of Sudan (Cephalophus abyssinicus ), since 
Mr Butler tells me he has never met with dikdiks on the 
Dinder. Captain Lynes also put up another tiny antelope, 
a mahogany-coloured beast, from a bush at his very feet; 
but was only armed with a collecting-gun. 
(iv.) Gazelles in the Sudan 
Of the seven species of gazelle found in the Sudan, 
four frequent exclusively the desert-regions of the north 
and east; while the other three (two of them closely 
allied) favour forest and bush farther south. 
