The true oryx of classical writers was probably the East and North-east African beisa-oryx (Oryx beisa), which is replaced in South Africa by the gemsbuck (oryx gazella).
The addax is a desert antelope, and in habits probably resembles the gemsbuck.
In the South African gemsbuck (Oryx gazella), fig.
- Gemsbuck, or Cape Oryx (Oryx gazella).
Among the varieties are the greater and lesser kudu (both rather rare); the duiker, gemsbuck, hartebeest, gerenuk (the most common - it has long thin legs and a camel-like neck); klipspringer, found on the high plateaus as well as in the lower districts; and the dik-dik, the smallest of the antelopes, its weight rarely exceeding so lb, common in the low countries and the foothills.