526 AFRICAN GAME ANIMALS 



The three specimens described above shot by Colonel 

 Roosevelt at Lake No show great color variation. The 

 youngest specimen, a fully adult male with horns twenty- 

 three inches in length and premolars showing slight wear, 

 has the white areas of the withers and head most distinct 

 with the remaining dorsal surface darkest in color. In the 

 oldest male the body color has become suffused strongly 

 with rufous, the white and black areas showing a strong 

 tendency to become uniformly rufous. The male of inter- 

 mediate age is no doubt an abnormally colored specimen or 

 freak, being somewhat lighter and more uniform than the 

 female in color. Adult males showing distinct white with- 

 ers and dark bodies have been examined at the British 

 Museum, the Congo Museum at Brussels, and the Field 

 Museum at Chicago, all of which showed well-developed 

 horns and were without doubt fully adult. A large series of 

 specimens, however, are needed to determine the individual 

 and age variation in color in this species. It is quite possible 

 that this species is subject to as great individual color 

 changes as its geographical associate, the white-eared kob. 



An adult male showed the following flesh measurements: 

 head and body, 63 inches; tail, 18^ inches; hind foot, 20 

 inches; ear, 5/4 inches. The old female measured less in 

 length of tail and hind foot, these measurements being i6>^ 

 and 17 inches, respectively. In a series of three males the 

 longest-horned specimen measured 29^ inches in length, 

 20^ inches in greatest spread, and had a skull length of 

 ii]4. inches. The female skull measures 10^ inches. The 

 longest-horned specimen recorded by Rowland Ward in a 

 series of 26 measures 33^2 inches. 



