TIANG 81 



of the horn-pedicles and simpler form of horn in this 

 case a gentle backward curve, contrasting 1 with the 

 abrupt angles in hartebeest proper. A glance at the 

 annexed diagram showing- horns of (A] tiang, and (B] 

 Jackson's hartebeest which latter animal also occurs 

 in the Sudan will demonstrate the difference between the 

 two genera better than words. 



The Upper Sudan seems to form, not exactly a 

 rendezvous (since none of the animals actually meet), but 

 rather a centre of dispersal for three out of the four allied 

 species of Damaliscus. 1 From its southern limits (say 



TIANG ON GAZE. 



about 5 North latitude) the tiang our present subject- 

 spreads away northwards to Sahara ; while southward 

 with a gap between its cousin, the topi, extends into 

 Equatoria ; and from the west again separated by a 

 hiatus intrudes the korrigum from Senegal. The first 

 two of these three relatives agree among themselves 

 (and equally with their somewhat segregated cousin, the 

 sassaby of southern Africa) in the extreme richness and 

 depth of colour of their coats. No other group quite 

 matches it a deep glossy mahogany-red, set-off by con- 



1 Besides the four referred to, other three species are, rightly or 

 wrongly, included in the genus Damaliscus^ to wit : (i) Hunter's antelope, 

 the headquarters of which lie along the Tana River in British East Africa ; 

 (2) the blessbuck ; and (3y - .the bontebuck, both these latter being 

 exclusively South African. None of these three quite conform in external 

 characteristics with the four species under review ; nor are they included 

 in this particular survey of the Damaliscus group. 



F 



