171 
Genus IV. STREPSICEROS. 
Type. 
Strepsiceros, Hamilton Smith, Griff. An. K. v. p. 365 (1827) . . . . S. capensis. 
CaliopenUsilby ea lSd0, pe l3dS9) . . . « © « « » « « |S. CAPENSIS, 
Large-sized Antelopes resembling Tragelaphus and Limnotragus in that 
the horns are spirally twisted and present only in the male; but differing 
from these two genera in that the horns are rounded behind at the base, with 
a scarcely appreciable external ridge, and form from two and a half to three 
complete turns with a more open spiral curvature. Further differing from 
Limnotragus, but resembling Tragelaphus, in the structure of the feet, which 
are adapted for progression on hard ground. ‘Tail thickly hairy at the sides 
as in Limnotragus and in most of the species of Tragelaphus. 
Range of the Genus. Eastern and Southern Africa from Abyssinia and 
Somaliland to Cape Colony, extending in Western Africa as far north as the 
Congo region. 
The two known species of this genus may be recognized as follows :— 
a. Height of adult male about four feet or over; horns with a bold and open 
spiral curvature and strongly diverging from the base; a mane of hairs 
running along throat in male; no white patches on the throat in either 
sex, and transverse body-stripes varying from four to ten. 
130. S. capensis. 
6. Height of adult male only a little over three feet ; horns with much less 
open curve and but little diverging from base; no throat-mane in the 
male ; two white throat-patches in both sexes, and transverse body-stripes 
almost always more thantwelve . . . . . . . I3l. S. anberdis. 
