THE SELOtfS COLLECTION. 75 



EAST AFEICAN ELAND. 



TAUBOTEAGUS OEYX PATTEESOXIAXUS. 



Taurotragus oryx patter sonianus, Lydekker, Field, vol. cviii. p. 579, 

 1906 ; Novit. Zool. vol. xiv. p. 325, pi. i., 1907. 



Very closely allied to the foregoing race ; general colour rather 

 darker, with a darker mane. As in the case of the Mashonaland 

 race the white suborbital markings are only present in animals not 

 very advanced in age, and similarly the gradual increase of size of 

 the frontal tuft from a dark central streak to a broad long-haired 

 growth is' also a change brought about by age. 



The only specimen of this Eland in the Collection is a bull with 

 horns measuring as follows : length from point to base 24 ; circum- 

 ference 10| ; spread from tip to tip 10|. 



Typical locality, Laikipia Plateau, Naivasha Province, Kenya 

 Colony ; range includes the greater part of Kenya Colony, the race 

 extending as far north as the Northern Guaso Nyiro Valley, and 

 penetrating northwards from the typical locality into Uganda. It 

 also occurs in Tanganyika Territory and further south probably 

 merges with the Mashonaland form. 



415 19. 7. 15. 440. Sirgoit Hills, Uasin Gishu District, Kenya 

 Colony. 



SUDAN DERBY ELAND. 



TAUEOTEAUUS DEEBIANUS OIOAS. 



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



vol. xxx. p. 19, 1863; Eeise Weiss. Nil, p. 319, 1869, nee Antilope 



oreas, Pallas. 

 Taurotragus (Boselaphus) gigas, Heuglin, Nova Acta Ac. Caes. Leop.-Car. 



vol. xxx. p. 19, pi. i. fig. 2, 1863 ; Eeise Weiss. Nil, p. 318, 1869. 

 Taurotragus gigas, Baker, Wild Beasts and their Ways, vol. ii. p. 189, 



1890. 

 Taurotragus oryx gigas, Sclater and Thomas, Book of Antelopes, vol. iv. 



p. 198, 1900. 

 Taurotragus derbianus gigas, Rothschild, Novit. Zool. vol. xii. p. 447, 



pi. xii., 1905 ; Ann. Mag. Nat. Hist. ser. 8, vol. xii. p. 575, 1913. 



Closely allied to the typical form from West Africa, distin- 

 guished by the adult males being lighter in colour and having 



