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 granti 
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 
serengeta 
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 
