194 GAME BIRDS OF NORTH AMERICA. 
KEY TO THE SPECIES. 
A. Adult Males.—Lower parts, white, irreg- 
ularly barred with black. 
a. Throat, white. 
a’. Band on breast. 
a’. Breast band, hght chestnut, inner BOB WHITE. 
edges of tertials, deep buff. C. virginianus, 
6". Breast band, pale cinnamon ; inner 
edges of tertials, buffy white. eae 
TEXAN BOB 
C. uv. texanus. 
FLORIDA BOB 
WHITE. 
C.v floridanus. 
MASKED BOB 
B. Adult Male.—Lower parts, cinnamon 
, WHITE. 
rufous. Throat, black. | Cpl ’ 
_ ridgwaye. 
d'. No band on breast. 
- | 
GENOSORELOR IVE 
(Greek, épos, ovos, amountain; + éprvé, ortyx, a quail). 
Oreortyx, Baird. B. North Am., 1858, p. 642. Type Ortyx 
picta., Doug}. 
Head with a long, slender crest, consisting of two feathers, either 
standing upright or inclining slightly backward. ‘Tail broad, 
rounded, almost hidden by upper coverts. Tarsus equal to 
middle toe and claw. 
One species and two subspecies of this genus are recognized, 
but there is so very slight a difference between the subspecies 
that a close examination is required to separate them, especially 
if the locality of the specimens is unknown. They are among 
the most brilliantly plumaged members of the family and of a 
larger size and greater weight than the other North American 
Partridges. Strictly mountain dwellers, they are found in the 
summer at very high elevations. Their coloring is peculiar, be- 
ing massed in large areas and of strongly contrasting hues. 
There is considerable difference in the appearance of the sexes, 
the female being less gaudily attired and with a much shorter 
crest. 
