WATERBUCKS AND REEDBUCKS 
497 
color averaging somewhat darker. From the ’Nzoia defassa 
the Uganda race is readily distinguishable by its short pel- 
age and absence of cinnamon suffusion to the body colora¬ 
tion, as well as by its longer and more widely spread horns. 
Dimensions of specimens in the flesh are not available 
for comparison, but those of the horns and skulls are abun¬ 
dantly recorded. Skulls of old adults usually measure six¬ 
teen inches in greatest length. The longest horns, as well 
as those showing the greatest spread, recorded by Ward are 
a pair shot by A. F. B. Wollaston near Lake Albert Edward. 
This pair has a length on the front curve of 36^ inches 
with a spread of 36 inches. Several other heads of almost 
equal dimensions are recorded from the same general local¬ 
ity by Ward. The direction of the horns laterally, or the 
amount of spread, varies greatly from specimens in which 
it exceeds the length to ones having a spread only half the 
length. As a rule, however, the horns are remarkably wide¬ 
spread and exceed the horns of other races in this respect. 
Rudolf Defassa Waterbuck 
Kobus defassa matschiei 
Kobus unctuosus matschiei Neumann, 1905, Sitz. Ber. Ges. Nat. Freund. 
Berl., p. 92. 
Range. —Northern shores of Lake Rudolf north through 
the Rift Valley of southern Abyssinia as far as Lake Zwai. 
The defassa from the Lake Rudolf region and the Rift 
Valley of southern Abyssinia has been named for Doctor 
Paul Matschie by Herr Neumann from specimens which 
he shot at Lake Abaya during his journey across Abyssinia 
to the Sobat River in 1899. Some years earlier, Donald¬ 
son Smith reported waterbuck on the north shore of Lake 
Stephanie, and about the same time A. H. Neumann met 
with this race of the defassa on the northeast shore of Lake 
Rudolf while elephant shooting. The race is distinguish¬ 
able from the typical defassa of the highlands of Abyssinia 
by its more grayish or drab coloration and by its much 
shorter and thinner pelage, in which respect it approaches 
the Nile defassa. It can, however, be distinguished from 
the latter by its more cinnamon coloration. Judging by the 
