THE GAZELLES AND THEIR ALLIES 587 



which, as experience had taught us, it resorted in the morn- 

 ing or afternoon in the course of its daily round of exist- 

 ence. In some places we found stamping-grounds, or areas 

 of bare earth several roods in extent, to which, apparently, 

 herds of these gazelles must have resorted at intervals for 

 long periods of time, for they were thickly covered with 

 dung pellets in various stages of dryness. 



At McMillan's ranch there was a tame doe of the big 

 gazelle which was as friendly and as much at home as any 

 domestic animal. 



Key to the Races of grand 



Cinnamon of back extending onto the tail as a narrow line separat- 

 ing the white rump patch or else stopping within 

 one inch of the base; tail chiefly black, only 

 basal one-third white 



serengetce 



Cinnamon of back well separated by a broad white rump patch two 

 or three inches wide; black of tail less exten- 

 sive, confined to terminal one-half 

 A dark flank band in adult males notata 



Flanks without dark band in adult males 



A dark pygal stripe bordering the white rump patch in adult 

 males 

 Horns turned outward and wide-spread, the tips hooked 

 backward robertsi 



Horns evenly spreading and lyrate in shape, the tips ap- 

 proaching one another 

 Dorsal color lighter cinnamon, horns longer and 

 wider-spread granti 



Dorsal color darker cinnamon, horns smaller and 

 narrower roosevelti 



Horns more nearly parallel, not curved outward 



Dorsal color lighter, dark flank band obsolete in 

 the adult female lacuum 



