TETBAONID^ - ODONTOPHORINJE : PARTRIDGES OR QUAIL. 589 



forty-odd species are known. In habits, they agree more or less completely with the well 

 known Bob-white. Our species are apparently monogamous, and go iu small flocks, called 

 " coveys," usually consisting of the members of one family; they are terrestrial, but take to the 

 trees on occasion; nest on the ground, laying numerous white or speckled eggs; are chiefly 

 granivorous, but also feed ou buds, soft fruits, and insects ; and are non-migratory. 



Analysis of Genera. 

 An inconspicuous crest, scarcely visible except in life. Tail about I as long as the wing. Coloration 



everywhere variegated. (One species) Ortyx 210 



A sliort, soft, full crest. Tail J the wing. Coloration much the same all over, showing curious semi- 

 circular markings. (One species) Callipepla 213 



A long, slender, arrowy crest, two or three inches long, of two narrowly linear feathers. Tail g as long as 

 the wing. Parti-colored, but the coloration chiefly in masses. (One species) ....... Orortyx 211 



A long, recurved, helmet-like crest, of several imbricated i)lume8, enlarged at the extremity. Tail % as 



long as the wing. Coloration chiefly in masses. (Two species) Lojthortyx 212 



A short, soft, full crest. Tail scarcely A as long as the wing. Coloration peculiar, in round, white spots 



on the under parts of the cf. (One species) Cyrtonyx 214 



As all these genera have each but a single species in this country, excepting Lophortyx, the foregoing is 

 nearly ecjuivalent to a determination of the species. 



OR'TYX. (Gr. opru^. ortux, a quail.) 

 Feathers of crown lengthened and erec- 

 tile, but hardly forming a true crest. 

 Tail about f as long as the wing. 

 Outstretched feet reaching beyond end 

 of tail. Coloration much variegated ; 

 a reddish-brown varied with black 

 and white the leading color. Eggs 

 white, pyriform, numerous. Fig. 407. — Bill and foot of Ortyx, nat. size. (Ad nat. del. E. C.) 



Analysis of Varieties. 

 Length of ^f, 10 inches or rather more; extent 15 or more; wing 4.50 or more. Bill blackish-brown. 



Ground color dull pinkish-red with narrow black bars below rirginiana 571 



Lengthof^f, scarcely 10 inches; extent under 15; wing scarcely or not 4.60. Bill jet black. Ground 



color dark reddish, with much broader black bars below floridana 572 



Length etc. as in floridana. Ground color paler than in virginiana, with numerous black bars, and 

 mcrease of ashy and tawny texana 573 



Fio. 408. — Mr. and Mrs. Bob White, nat. size. (Ad nat. del. E. 0.) 



571. O. virginia'na. (Of Virginia. Figs. 407, 40S, 409.) Virginia Partridge, or '' Quail." 

 Bob- WHITE. " Quail : " New England, wherever the Rufied Grouse is called " partridge." 



