TRAGELAPHIN^ 217 



The races are distinguishable as follows : — 



A. Horns shorter and stouter ; frontal tuft chocolate 



(reddish fulvous). 

 a. General colour deep chestnut or rufous ; 14 or 



15 stripes T. d. derhianua. 



h. General colour paler ; about 10 stripes T. d. gigas. 



B. Horns larger and more slender : frontal tuft 



blackish chestnut T. d. congolanus. 



The typical locality of the so-called Oreas colini is Kitu, 

 Upper Senegal. 



A. — Taurotragus derbianus derbianus. 



Taurotragus derbianus typious, Ward, Becords of Big Game, ed. 6, 



p. 334, 1910, ed. 7, p. 332, 1914. 

 Taurotragus derbianus derbianus, Bothschild, Ann. Mag. Nat. Hist. 



ser. 8, vol. xii, p. 575, 1913. 



Typical locality Casamance, south of the Gambia. 



General colour deep chestnut or rufous ; white stripes 

 fourteen or iifteen. Fine horns measvire from 30 to 42 inches, 

 with a basal girth of from 9 j to 14|, and a tip-to-tip interval 

 of from 15j to 29-| inches. 



1648, h (originally 647, c). Frontlet and horns. Gambia ; 

 collected by Mr. T. Whitfield. Cotype. 



Presented hy the Earl of Derly, about 1842. 



1648, a (originally 647, a). Frontlet and horns. Same 

 locality and collector. Sa7ne history. 



63. 4. 15. 1 (1648, c). Skull, with horns, and skin. 

 Senegal. Presented iy F. Winwood Beade, Esq., 1863. 



63. 4. 15. 2 (1648, d). Skull, with horns. Same locality. 



Same history. 



89. 10. 7. 6. Skull, with horns, and head-skin. Barcote, 

 Upper Gambia. Presented by Dr. Percy Rendall, 1889. 



11. 6. 10. 111. Skull, with horns, and skin, female. 

 Upper Gambia. Presented by G. Fenwiok-Oiven, Esq., 1911. 



B. — Taupotragrus derbianus gigas. 



Taurotragus (Boselaphus) oreas, Heuglin, Nova Acta Ac. Goes. Leop.- 

 Car. vol. XXX, p. 19, 1863, Bei'se Weiss. Nil, p. 319, 1869, nee 

 Antilope oreas, Ballas. 



