SEXUAL SELECTION- 



70S 



gular colors and marks of many other antelopes, though 

 common to both sexes, have been gained and transmitted 

 in a like manner. Both sexes, for instance, of the koodoo 

 {Strepsiceros kudu) (Fig. 64) have narrow white vertical lines 

 on their hind flanks, and an elegant angular white mark on 

 their foreheads. Both sexes in the genus Damalis are very 

 oddly colored; in J), pygarga the back and neck are pur- 



Fia. 71. — Damalis pygarga, male (from the Enowsley Menagerie). 



plish red, shading on the flanks into black; and these 

 colors are abruptly separated from the white belly and 

 from a large white space on the buttocks; the head is 

 still more oddly colored, a large oblong white mask, nar- 

 rowly edged with black, covers the face up to the eyes 

 (Fig. 71); there are three white stripes on the forehead, 

 and the ears are marked with white. The fawns of this 

 species are of a uniform pale yellowish brown. In Da- 



