BIRDS OF NORTH AND MIDDLE AMERICA 333 



Life Zones, from central and central-western Tamaulipas south to the 

 northern part of southeastern San Luis Potosi. 

 Type locality. — Jaumave, Tamaulipas. 



Colinus virginianus maculatus Nf.lson, Auk, xvi, 1899, 26, part (Jaumave Valley, 

 Tamaulipas). — Phillips, Auk, xxviii, 1911, 74, part (Guiaves, Rio Santo, 

 Santa Leonara, Rio de la Cruz, Montelunga, Tamaulipas, Mexico).— Peters, 

 Check-list Birds World, ii, 1934, 48, part. — Hellmayr and Conover, Cat. Birds 

 Amer., i. No. 1, 1942, 242, part (syn. ; distr.). 



C[olinns] vlirginiamis] maculatus Sutton and Pettingill, Auk, lix, 1942, 12, in text 

 (Gomez Farias region, southwestern Tamaulipas; crit.). 



Colinus virginianus aridus Aldrtch, Proc. Biol. Soc. Washington, Iv, 1942, 67 

 (Jaumave, Tamaulipas; orig. descr. ; crit.; meas.). 



Colinus virginianus Sutton and PErriNCiLL, Auk, lix, 1942, 12 (G6mez Farias area, 

 sw. Tamaulipas). 



COLINUS VIRGINIANUS GRAYSONI (Lawrence) 



Gr.a.yson's Bobwhite 



Adult male. — Similar to that of the nominate form but with the entire 

 underparts posterior to a narrow black pectoral band uniform bright 

 ochraceous-tawny with a slight hazel tinge; the top of the head darker, 

 more blackish; the interscapulars darker and redder — between dark cin- 

 namon-rufous and hazel, the feathers marginally incompletely barred with 

 blackish ; rest of upperparts darker, the blackish markings more extensive 

 and the brownish ground color duskier, more grayish; upper wing coverts 

 brighter reddish — hazel to bright ochraceous-tawny, heavily barred with 

 black and white, the white bars always bordered broadly with black; the 

 superciliary, lores, chin, and upper throat often washed with pale buff. 



Adult female. — Similar to that of the nominate race, even more similar 

 to that of Colinus virginianus texanus but with the entire underparts warm 

 buff tinged with pale ochraceous, becoming fairly tawny on the breast, the 

 markings on this ground color as in the nominate form, but many of the 

 abdominal V-shaped bars fuscous instead of black; the black pectoral 

 necklace narrower and more interrupted ; the immediately posterior tawny 

 area less extensive than in the typical race ; above very similar to texanus 

 but more rufescent, the interscapulars bright ochraceous-tawny to hazel 

 barred very heavily with black and, to a lesser extent, with whitish ; rest 

 of upperparts buffy brown abundantly barred with black-bordered white 

 bars and splotched with black to dark sepia. 



Other plumages apparently unknown. 



Adult male.—Wmg 104-114.5 (108.5); tail 57.5-67 (61.3); culmen 

 from base 15-17.1 (15.7) ; tarsus 29.1-32.5 (31.0) ; middle toe without 

 claw 25.5-28.7 (26.9 mm.).i^ 



"Twenty specimens from Jalisco, San Luis Potosi, Hidalgo, Guadalajara, and 

 Guanajuato. 



