THE BROAD-HOOFED ANTELOPE
GAZ. MYTILOPES.
Date 1827-1835.
Source http://www.flickr.com/photos/biodivlibrary/8189196344
Author Bull; Georges Cuvier; George Robert Gray; John Edward Gray; Edward Griffith; Edward Pidgeon; Charles Hamilton Smith; J. O. Westwood
Full title The animal kingdom : arranged in conformity with its organization /
Source: https://commons.wikimedia.org/wiki/File:The_animal_kingdom_(Pl._25)_(8189196344).jpg

The addax (Addax nasomaculatus), also known as the white antelope and the screwhorn antelope, is an antelope of the genus Addax and family Bovidae, that lives in the Sahara desert. As suggested by its alternative name, this pale antelope has long, twisted horns and in the summer, the coat turns almost completely white or sandy blonde.