That the strepsiceros of Pliny, or the addax of the Africans, is the antelope.
Unlike the addax, it is gregarious in its habits, and lives in large herds.
In this desert region is found the addax, the rarest of Sudan antelopes.
addax, ad′aks, n. a species of large antelope found in Africa, with long twisted horns.
The ordinary height of the addax is three feet seven or eight inches, and the horns are almost exactly alike in the two sexes.
The wide-spread hoofs of the addax antelope enable it to travel over sand at a great pace.