THE COLINS OR BOB-WHITES. 135 
Range.—Central America ; Guatemala. 
THE COLINS OR BOB-WHITES. GENUS ORTYX. 
Oriyx, Steph. in Shaw’s Gen. Zool. xi. p. 376 (1819). 
Type, O. virginianus (Linn.). 
Sexes differentin plumage. Vo distinct crest. 
First primary flight-feathers ¢xtermediate in length between 
the seventh and eighth ; fourth slightly the longest. 
Tail composed of twelve feathers, rather more than half the 
length of the wing. 
Tarsus shorter than the middle toe and claw. 
Ten small Quail-like forms are known. 
I. THE VIRGINIAN COLIN OR BOB-WHITE. ORTYX VIRGINIANUS. 
Letrao virginianus, T. marilandicus, and T. mexicanus, Linn. 
Seale? p. 277 (1766). 
LPerdix virginiana, Wilson, Am. Orn. vi. p. 21, pl. xlvii. 
(1812); Aud. Orn. Biogr. i. p. 388, pl. 76 (1831), v. D 
564 (1839). 
Ortyx virginianus, Aud. B. Amer. v p. 59, pl. 289 (1842) ; 
Gould, Monogr. Odontoph. pt. i. pl. 1 (1844); Ogilvie- 
Grant, Cat. B. Brit. Mus. xxii. p. 415 (1893). 
Colinus virginianus, Bendire, N. Am. B. p. i. pl. i. fig. i. [ege], 
(1892.) 
Adult Male-—Chin and throat white, surrounded by a black 
band ; a black band from the gape to the chestnut ear-coverts : 
feathers of the mantle w7aceous-rufous, the edges grey, barred 
with black ; middle of the breast and belly white or whitish- 
buff, with the V-shaped black bars narrower and less marked. 
Total length, 8°5 inches; wing, 4°5, tail, 2-5; tarsus, ee 
middle toe and claw, 1°45. 
Adult Female.—Distinguished from the male by having the 
throat dright buff, the black bands from the gape to the ear- 
coverts and round the throat ill-defined, and the black bars on 
