XI KUDUS AND ELANDS a5 
this is not so marked as in O. beatriz, which is largely white 
with, however, brown legs. The Gemsbok is a handsome creature 
with greyish tawny colour, much darker on the legs, and with a 
Gazelle-like, dark, side stripe. It has received its vernacular name 
on account of its supposed hkeness to the Chamois (“ Geise ”), 
just as the Rehbok was so-called from its supposed likeness to the 
Roe Deer, and the Eland to the Elk. The Beisa (0. beisa) is of 
a similar tawny colour to the last, and also with darker stripes. 
The Addax (Addax) of North Africa, Arabia and Syria, has 
but one species (4. nasomaculatus). The horns are spirally twisted. 
the Tragelaphine section includes the Kudus, Elands, Nilgais, 
Fic. 164.—Speke’s Antelope. Tragelaphus spekii (9). x 5. 
and Harnessed Antelopes. They are all long-horned (when the 
horns are present in both sexes), the horns being twisted; the 
nose is naked with a slight median groove, and all are Ethiopian 
or Oriental-in range. 
The genus 7’ragelaphus includes the Harnessed Antelopes, so 
called on account of the direction of the stripes suggesting 
harness. The females are hornless, and the colours of the two 
sexes are different. The hoofs are long and the toes rather 
unusually separable, which state of affairs is in accord with the 
