GOA OR TIBETAN GAZELLE 241 
Head of Goa, 
The GOA or TIBETAN GAZELLE (Gazella picticaudata). 
The true gazelles form an extensive group of delicately-built ante- 
lopes, of medium or rather small size, with the muzzle of ordinary shape, 
the neck not unduly elongated, and no fold containing a crest of long 
erectile hairs running down the middle of the back. To suit the nature 
of their haunts, their coloration is generally of a sandy hue, with the under- 
parts white, and the face in most cases marked with parallel dark and 
light longitudinal streaks ; dark bands being also frequently present on 
the rump and on the flanks to separate the tawny of the back from the 
white beneath. The knees are very generally furnished with brush-like 
tufts of long, stiff hairs, and the tail is either short or of medium length. 
With the exception of a few species, horns are present in both sexes ; 
those of the males being stout, distinctly ridged, and generally of about 
the same length as the head, although occasionally much longer. Ex- 
cept at the tips, they curve backwards, so as to present an anteriorly 
convex lower portion, above which they are generally more or less 
curved forwards and upwards. Gazelles have a wider geographical 
distribution than any other genus of antelopes, and are, for the most 
part, inhabitants of more or less desert regions, or their confines. 
The Tibetan goa belongs to a small group of the genus in which 
the tail is very short, the usual dark and light streaks on the face are 
generally wanting, and the females are mostly hornless. As a species, 
it is distinguished by its comparatively small size, and the strongly 
marked backward curvature of the horns, which are not hooked at the 
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