no. 1840. REVISION OF HAIRY WOODPECKERS— OBERIIOLSER. 597 



d' '. Larger, wing of male usually more than 128 mm. (average, 132.4). 



Dryobates villosus septentrionalis. 

 b'. Upper wing-coverts with few or no white spots. 

 c. Lower parts white or brownish white. 

 d. Lower surface pure white. 

 e. Larger, wing of male averaging more than 130 mm. 



Dryobates villosus monticola. 

 e'. Smaller, wing of male averaging less than 130 mm. 

 /. Dorsal white stripe without spots or bars of black; superior wing-coverts 

 with less white; size slightly smaller. 



Dryobates villosus leucothorectis . 

 f / . Dorsal white stripe often with spots or bars of black; superior wing- 

 coverts with more white; size slightly larger. 



Dryobates villosus terraenovae. 

 d / . Lower surface brownish white. 

 e. Larger, wing of male over 126 mm. (averaging 129.1). 



Dryobates villosus orius. 

 e / . Smaller, wing of male less than 126 mm. (averaging 121.7). 



/. Bill much larger Dryobates villosus hyloscopus. 



f '. Bill much smaller Dryobates villosus icastus. 



d '. Lower parts smoky brown. 



d. Lower surface lighter — usually light smoky brown. 



e. Larger; ventral surface paler Dryobates villosus intermedius. 



e / . Smaller; ventral surface usually darker. 

 /. Red occipital band of male wider; lower parts more rusty brown. 



Dryobates villosus furaeus. 

 f. Red occipital band of male more narrow; lower parts more grayish brown. 



Dryobates villosus enissomenus. 

 d'. Lower surface darker — deep smoky brown. 



e. Light dorsal stripe and white tail-feathers more or less spotted or barred 



with black Dryobates villosus picoideus. 



e' '. Light dorsal stripe and white tail-feathers without spots or bars of black. 



/. Larger (wing of male usually more than 125 mm., averaging 127.8 mm.; 



exposed culmen usually more than 29 mm., averaging 31.7 mm.); 



lower parts paler, more grayish, brown Dryobates villosus harrisi. 



f '. Smaller (wing of male less than 125 mm., averaging under 124 mm.; 

 exposed culmen less than 29 mm., averaging under 28 mm.); lower 

 parts darker, more rufescent, brown. 

 g. Under surface lighter; size larger (wing of male more than 113 mm., 

 averaging over 114 mm.). 

 h. Smaller (wing of male less than 120 mm.). 



Dryobates villosus jardinii. 

 h' . Larger (wing of male more than 120 mm.). 



Dryobates villosus hylobatus. 

 g / . Under surface darker; size smaller (wing of male less than 113 mm., 

 averaging under 112 mm.). 

 h. Larger (wing of male usually more than 107 mm., averaging 109.4 

 mm.); dorsal stripe darker, more brownish. 



Dryobates villosus sanctorum. 

 h'. Smaller (wing of male usually less than 107 mm., averaging 102.8 

 mm.); dorsal stripe paler, more whitish. 



Dryobates villosus extimus. 



