64 
von Heuglin proposed to call this Antelope, after its native name, is a repre- 
sentative form of the Korrigum in the upper valley of the Nile, and, so far 
as we are acquainted with it at present, agrees in all essential respects with 
its West-African ally, except in its slightly smaller bulk, and some differences 
Skull of Damaliscus tiang, 9. 
in the black markings on the face and limbs. ‘The Tiang, Topi, and 
Korrigum have been until lately generally regarded as conspecific ; but in 
1892 Herr Paul Matschie, of the Royal Natural History Museum of Berlin, 
