THE GAZELLES AND THEIR ALLIES 615 
Equatorial Impalla 
JEpyceros melampus suara 
Native Names: Kinyamwesi, suara ; Swahili, swala ; Kikamba, ndadai. 
Strepsiceros suara Matschie, 1892, Sitz.-Ber. Ges. Nat. Freu., Berl., p. 135. 
Range.— Occurring throughout German East Africa 
and extending north in British East Africa as far as the 
Tana River drainage and the northern slopes of Mount 
Kenia, thence westward to the Turkwell River. In Uganda 
it extends as far north as Ankole. 
The present name of suara , by which the equatorial 
impalla is now known in zoology, was applied by Matschie 
originally to an association of material consisting of the skull 
and horns of a lesser koodoo, the skin of a female impalla, 
and the painting of an impalla by Doctor Richard Bohm. 
Some years afterward, upon discovering his mistake, Matschie 
applied the name suara to the impalla in his monograph 
on the mammals of German East Africa, published in 1894, 
thus eliminating the koodoo element of the original descrip¬ 
tion. The impalla was first recorded in 1863 from East Africa 
by Speke and Grant, who met with it in German East Africa. 
Since their time it has been reported by practically every 
traveller in the region. Von Heuglin reported the impalla 
from the White Nile, but it is now known not to occur in 
the Nile Valley proper. This error may have been due 
to a confusion of the impalla with the kob, which it resem¬ 
bles closely in color and size, and from which it is not dis¬ 
tinguishable in life except on close inspection. 
The equatorial impalla is distinguishable with some 
difficulty from the typical form of South Africa. It differs 
chiefly by its lighter or brighter tawny coloration and by 
larger horns. From the Angola race, peter si, it is distin¬ 
guishable by the absence of a black face blaze and ocular 
stripes. Indications of these dark markings, however, are 
often found on specimens from British East Africa, where 
only the old males are without some faint trace of them. 
The dorsal coloration is bright cinnamon-rufous, and 
extends well down on the sides, where it is sharply defined 
against the ochraceous-buff of the sides, which covers a strip 
about three inches wide extending the whole length of the 
