434 NORTH AMERICAN BIRDS. 



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



Gulf coast 585. P. iliaca (Merr.). Fox Sparrow. 



6^ 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 ;^ 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 (?). Hah. Pacific 

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

 south, in winter, to southern California. 



585(7,. P. iliaca unalaschcensis (Gmel.). Townsend's Sparrow. 



a?. 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.) 



6\ 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. Hab. Mountains 



of California, including eastern slope of Sierra Nevada. 



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

 6^ 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 of bill 

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

 .64, colored like those of P. unalaschcensis. Hah. Eocky 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 gi-ayish ; edge of wing bright yellow. 



rt'. Upper mandible reddish brown ; legs and feet pale brown ; stripes on crown 

 entirely chestnut-brown, not sharply defined. 

 b^. 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. schistacea except by the brown or rusty streaks on backj the proportions, however, may 

 apparently always be relied upon to distinguish them. 



