434 NORTH AMERICAN BIRDS. 



of the peninsula) ; in winter, over whole of eastern United States to 



Gulf coast , 585. P. iliaca (Mere.). Fox Sparrow. 



b\ Upper parts plain grayish brown or brownish gray, with wings, upper tail- 

 coverts, and tail rusty brownish, or else continuously deep vandyke- 

 brown ; wing-coverts without lighter tips, and back without trace of 

 streaks; 1 markings on lower parts vandyke-brown ; length 7.00-7.50, 

 wing 3.00-3.50 (3.24), tail 2.85-3.20 (3.03), exposed culmen .43-.50 (.46), 

 depth of bill .29-.32 (.30), tarsus .99-1.02 (1.00), hind-claw .42-.50 (.46). 

 Eggs .90 X -66, the brownish style comparatively rare (?). Sab. Pacific 

 coast, breeding from southern Alaska (British Columbia ?) to Unalashka ; 

 south, in winter, to southern California. 



585a. P. iliaca unalaschcensis (Gmel.). Townsend's Sparrow. 



a 8 . Wing shorter than tail ; spots on chest, etc., smaller, more scattered. (Upper 



parts plain brownish gray, becoming rusty brownish on wings, upper 



tail-coverts, and tail.) 



b 1 . Larger, with longer tail and larger and much thicker bill ; length 7.00-7.75, 



wing 3.10-3.45 (3.27), tail 3.30-3.80 (3.50), exposed culmen .43-.55 (.48), 



depth of bill .38-.45 (.40), tarsus .90-1.00 (.96), hind-claw .40-.52 (.46). 



Eggs .86 X -64, colored like those of P. unalaschcensis. Sab. Mountains 



of California, including eastern slope of Sierra Nevada. 



5856. P. iliaca megarhyncha (Baird). Thick-billed Sparrow. 

 b % . Smaller, with smaller and slenderer bill; length 6.80-7.65, wing 3.05-3.35 

 (3.20), tail 3.20-3.50 (3.34), exposed culmen .40-.49 (.43), depth o£ bill 

 .29-.32 (.31), tarsus .90-.96 (.93), hind-claw .40-.50 (.45). Eggs .85 X 

 .64, colored like those of P. unalaschcensis. Sab. Boeky Mountains, 

 west across Great Basin (occasional in California during migrations) ; 

 east, in winter, to Great Plains (Kansas, etc.). 



585c. P. iliaca schistacea (Baird). Slate-colored Sparrow. 



Genus EMBERNAGRA Lesson. (Page 385, pi. CX., fig. 6.) 



Species. 



Adult : Above plain olive-green, the top of the head with two dull chestnut- 

 brown (lateral) and one grayish or olive-greenish (median) stripes ; sides of head 

 grayish, with a brown streak behind eye ; lower parts dull white, strongly tinged 

 anteriorly and laterally with pale buffy grayish ; edge of wing bright yellow. 



a 1 . Upper mandible reddish brown; legs and feet pale brown; stripes on crown 

 entirely chestnut-brown, not sharply defined. 

 b 1 . Bill slender, its depth at base not more than .25 ; the length of upper man- 

 dible from nostril to tip .35-.38 ; flanks pale grayish buff, or light gray- 



1 Except in specimens approaching P. iliaca ; such are sometimes almost undistinguishable as far as color 

 is concerned from P. schiatacea except by the brown or rusty streaks on back ; the proportions, however, may 

 apparently always be relied upon to distinguish them. 



