BIRDS OF NORTH AND MIDDLE AMERICA 311 



cc. Abdomen spotted rather than barred (spots sometimes broadened so as to 

 approximate barrings)." 

 d. Entire chin and upper throat streaked or heavily spotted with blackish 

 brown. 

 e. Upperparts dark grayish black, not brownish (coastal plains of southern 



Chiapas) Colinus virginianus salvini, ad. 9 ( p. 341 ) 



ee. Upperparts definitely brownish. 



/. Feathers of upper back tawny to dark brown with numerous black 

 blotches as well as vermiculations. 

 g. General tone of upperparts rufescent-tawny (Pacific lowlands of 

 western Panama). 



Colinus cristatus panamensis, ad. ? (p. 363) 



gg. General tone of upperparts bister (largely extrallmital — the 



Guianas, Brazil, and Venezuela ; introduced in the Grenadines and 



Virgin Islands) Colinus cristatus sonnini, ad. 9 (p. 360) 



^. Feathers of upper back grayish brown, with no black blotches but 

 only vermiculations. 

 g. Pale spots on abdomen definitely buflfy (El Salvador, east of 

 Lempa River). 



Colinus leucopogon leucopogon, ad. 9 (p. 357) 

 gg. Pale spots on abdomen white, only slightly tinged with buffy. 

 h. Chin, throat, and superciliaries darker — ochraceous-buff to honey 

 yellow (western Nicaragua). 



Colinus leucopogon sclateri, ad. 9 (p. 355) 

 hh. Chin, throat, and superciliaries paler — light pinkish buff to pale 

 ochraceous-buff (western Honduras). 



Colinus leucopogon leylandi, ad. 9 (p. 353) 

 dd. Entire chin and upper throat immaculate or only faintly spotted with 

 blackish brown. 

 e. Chin and upper throat with some blackish spots. 

 /. Chin and upper throat bordered laterally and posteriorly with a band 

 of tawny spotted with blackish. 

 g. Paler, general color of upperparts pale buckthorn brown with a 

 grayish tinge (western Guatemala). 



Colinus leucopogon incanus, ad. 9 (p. 359) 

 gg. Darker, general color of upperparts snuff brown with a grayish 

 tinge (El Salvador west of Lempa River). 



Colinus leucopogon hypoleucus, ad. 9 (p. 358) 

 ^. Chin and upper throat without a tawny, black-spotted border (plateau 

 and western slope of Costa Rica). 



Colinus leucopogon dickeyi, ad. 9 (p. 356) 

 ec. Chin and upper throat immaculate. 



/. Breast feathers avellaneous to wood brown, finely vermiculated with 

 blackish, forming a distinct pectoral band. 

 g. Throat generally pale, slightly washed with buflfy; middle of 

 abdomen also slightly tinged with buffy (western Honduras). 



Colinus leucopogon leylandi, ad. 9 (p. 353) 

 gg. Throat generally darker, heavily suffused with ochraceous-buff; 

 middle of abdomen definitely buffy (western Nicaragua). 



Colinus leucopogon sclateri, ad. 9 (p. 355) 



' As in some specimens of Colinus leucopogon hypoleucus. 



