882 THE UNGULATES, OR HOOFED MAMMALS 



Another group is formed by three Asiatic gazelles, which differ 

 Persian Gazelle frQm ^ Qther members o f t he genus by the females being hornless. 

 Of these, the Persian gazelle (G. subgutturosa) inhabits the highlands of Persia and 

 a large area in Central Asia, extending as far as Gobi desert. This species has 

 lyrate horns, with incurved tips, which may have from sixteen to twenty-five rings, 

 and the tail is not surrounded by a white disc. The longest pair of horns known 

 measure fourteen and one-half inches. In Mongolia, this species is replaced by 

 the larger Mongolian gazelle (G. gutturosa), characterized by its extremely pale 

 colored horns. The third member of the group is the goa or Tibetan gazelle (G. 

 picticaudata], distinguished by the white disc round the tail, the long winter coat, 

 short ears and tail, the greatly curved horns, and the uniform color of the face. 

 The height of the animal is twenty-four inches, and the largest recorded horns meas- 

 ured fifteen and three-fourths inches in length, the number of rings varying from 

 twenty to thirty. This gazelle inhabits the Tibetan plateau at elevations of from 

 13,000 to 18,000 feet, and goes in small parties of from two or three to a dozen. It 

 is less shy than other species. 



The last group of the true gazelles is characterized by the white of 

 6 the rump extending forward in an angle into the fawn color of the 

 haunches; both sexes having horns, which are frequently longer than in the other 

 groups; the animals themselves being also relatively large. Perhaps the handsom- 

 est member of the whole genus is the East- African Grant's gazelle ( G. granti} , 

 from the Kilima-Njaro district and the neighborhood of Zanzibar, of which the head 

 is show in the cut on p. 878. 



Grant's gazelle has longer and finer horns than any other species of the genus; 

 their length being frequently as much as twenty-six inches, while in one instance a 

 length of thirty inches has been recorded. The general color of the upper part of 

 the body is fawn, and there is no dark band on the flanks dividing 

 the fawn color from the white of the under parts. On the neck 

 and back' the hair has a kind of wavy appearance, somewhat like 

 the pattern on watered silk. This gazelle is common on the open 

 plains of East Africa, and is generally found in small parties com- 

 prising from ten to fifteen does and fawns accompanied by a single 

 adult buck. Sir J. Willoughby states that in the Kilima-Njaro 

 district these gazelles "were in extraordinary profusion, though 

 extremely wild, and among the herds we noticed many fine bucks. 

 It may be worthy of record that they would often allow us to crawl 

 toward them without showing any sign of alarm, until we were 

 within a fair rifle range; whereas if we attempted to walk toward 

 them, even in a stooping position they would invariably start off 

 before we had approached within four hundred yards. ' ' 



, In Masailand, on the east coast to the north of Zan- 



Gazelle z i bar > Grant's gazelle is replaced by the allied but 

 HORNS OF THOM- smaller Thomson's gazelle (G. thomsoni}, of which 



SON'S GAZEi,i,i5. the horns are shown in the accompanying cut. In this species the 

 (From Giinther.\ horns are relatively smaller and thinner than in the last, not ex- 



