BIRDS OF ISrOETH AND MIDDLE AMERICA. 197 



/. White of back more extended, unbroken; lateral rectrices never with 

 black spots, and flanks never distinctly (if at all) spotted or streaked. 

 g. Larger (wing averaging 133.3 in Biale, 131.1 in female). (Rocky Mt. 

 district, from British Columbia to northern New Mexico.) 



Dryobates villosus monticola (p. 212). 

 gg. Smaller (wing averaging 126.3 in male, 123.6 in female). (Extreme 

 western Texas, New Mexico and Arizona, except extreme southern 

 portion, and southern Utah.) 



Dryobates villosus leucothorectis (p. 214). 

 ee. Underparts not pure white. 

 /. Larger (wing averaging 129.1 in male, 126.3 in female). (Sierra Nevada 

 district of California, Oregon, Washington, and Nevada.) 



Dryobates villosus orius (p. 215). 

 /. Smaller (wing averaging 122.6 in male, 120.1 in female). (Northern 

 Lower California, southern California, and coast district of middle 

 California, north to Mendocino Co.) 



Dryobates villosus hyloscopus (p. 217). 

 dd. Underparts not white (pale brownish gray to deep smoky brown). 

 e. Underparts drab-grayish or buffy grayish. 

 /. Larger (wing averaging 124 or more, tail 77 or more); under parts deeper 

 smoke-gray or drab gray. 

 g. Pale grayish or whitish of back not usually broken into spots or 

 irregular bars; flanks not heavily, if at all spotted with black; 

 lateral rectrices without black bars or spots. 

 h. Under parts darker and grayer or more smoky; white of back more 

 strongly tinged with gray; wing-coverts less often spotted; nasal 

 tufts usually dull whitish or grayish. (Northwest coast district, 

 from Humboldt Co., California, to British Columbia.) 



Dryobates villosus harrisi (p. 21S). 



hh. Under parts paler (often nearly white) and more buffy; white of 



back less tinged with gray (often not at all) ; wing-coverts more 



often spotted; nasal tufts usually strongly buffy or tawny. 



(Southeastern coast of Alaska, including Alexander Archipelago.) 



Dryobates villosus sitkensis (p. 220). 



gg. Pale grayish or whitish of back broken into spots or irregular bars; 



flanks heavily spotted with black; lateral rectrices usually broadly 



barred or spotted with black. (Queen Charlotte Islands, British 



Columbia.) Dryobates villosus picoideus (p. 220). 



/. Smaller (wing averaging less than 124, tail less than 75); underparts 

 paler smoke-gray, drab-gray, or buffy gray. 

 g. Larger (wing averaging 123.5 in male, 123.3 in female); underparts 

 slightly paler. (Southwestern New Mexico, southern Arizona, and 

 southward to Durango, Zacatecas, and Coahuila.) 



Dryobates villosus icastus (p. 221). 

 gg. Smaller (wing averaging 120.7 in male, 118.2 in female); underparts 

 slightly darker. (Middle-eastern portion of Mexican plateau, in 

 States of San Luis Potosf and southern Tamaulipas.) 



Dryobates villosus intermedius (p. 222). 



ee. Underparts decidedly brownish. 



/. Larger (averaging: wing 117.7 in male, 114.6 in female, tail 71.5 in male, 



69.5 in female); underparts more grayish brown. (Highlands of 



southern Mexico, in States of Vera Cruz, Puebla, Mexico, Morelos, 



Oaxaca, Guerrero, Michoacdn, and Jalisco.) 



Dryobates villosus jardinii (p. 223). 



