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, inches. The old female measured less in 
length of tail and hind foot, these measurements being 16% 
and 17 inches, respectively. In a series of three males the 
longest-horned specimen measured 29^ inches in length, 
inches in greatest spread, and had a skull length of 
nj 4 inches. The female skull measures 10^2 inches. The 
longest-horned specimen recorded by Rowland Ward in a 
series of 26 measures 33^ inches. 
