310 BULLETIN 50, UNITED STATES NATIONAL MUSEUM 



ec. Upperparts (crown, nape, back, and wings) more reddish brown than 

 grayish. 

 /. Pale edges of feathers of crown more graj'ish than brownish 

 (Palenque area, Chiapas). 



Colinus virginianus minor, ad. ? (p. 337) 

 ff. Pale edges of feathers of crown more brownish than grayish. 



g. Size smaller; wing under 110 mm. (Florida Peninsula; introduced 

 in the Bahamas). 



Colinus virginianus floridanus, ad. 9 (p. 326) 

 gg. Size larger; wing over 110 mm. (eastern and central United States; 

 southeastern Canada; introduced in West Indies and western 

 United States). 



Colinus virginianus virginianus, ad. ? (p. 312) 

 dd. Breast without a distinct cinnamomeous wash. 



e. Size larger; wing over 106 mm. (southern Puebla). 



Colinus virginianus nigripectus, ad. ? (p. 334) 

 ee. Size smaller ; wing under 106 mm. 



/. Pale edges of feathers of crown more grayish than brownish. 

 g. Smaller, wing under 95 mm. 

 h. Breast washed with tawny-buff (Palenque area, Chiapas). 



Colinus virginianus minor, ad. 9 (p. 337) 

 hh. Breast not washed with tawny-buff (Honduras and Guatemala). 

 Colinus nigrogularis nigrogularis, ad. 9 (p. 350) 

 gg. Larger, wing over 95 mm. 



h. Upperparts slightly darker, more brownish, less grayish"* 

 (Yucatan, except Progreso region). 



Colinus nigrogularis caboti, ad. 9 (p. 347) 

 hh. Upperparts slightly paler, less brownish, more grayish (Progreso 

 region, Yucatan). 



Colinus nigrogularis persiccus, ad. 9 (p. 350) 

 ff. Pale edges of feathers of crown more brownish than grayish. 



g. Dorsal coloration grayer; interscapulars and upper brown more 



grayish than rufescent. 



h. Buff confined to chin and upper throat (Cuba and Isle of Pines). 



Colinus virginianus cubanensis, ad. 9 (p. 329) 



hh. Entire throat and upper breast buffy (Putla area, western 



Oaxaca) Colinus virginianus atriceps, ad. 9 (p. 344) 



gg. Dorsal coloration more rufescent; interscapulars and upper back 

 with little grayish ; dark brown and ruf escent-brown. 

 h. Shaft streaks of interscapulars broader and darker — Mikado 

 brown (eastern Chiapas and adjacent western Guatemala). 



Colinus virginianus insignis, ad. 9 (p. 338) 

 hh. Shaft streaks of interscapulars narrower and paler — cinnamon- 

 rufous Colinus virginianus thayeri, ad. 9 (p. 343) 



Colinus virginianus coyolcos, ad. 9 (p. 339)* 



=" The females of C. n. caholi and C. n. persiccus are impossible to "key out" except 

 by such comparative adjectives, which are, admittedly, useless when the reader has 

 but one of the two forms available. In such cases, geography must be used as a 

 guide. 



* These two races cannot be distinguished in this sex. The range of C. v. thayeri 

 is the Isthmus of Tehuantepcc, eastern Oaxaca ; that of C. v. coyolcos is the Pacific 

 slope of Oaxaca and Chiapas, from Tehuantepec City to Tonala. 



