AMMODRAMVS. 411 



from nostril. Adult: Crown blackish or dark brown, streaked 

 with light r grayish buffy and divided by a very distinct median 

 line of pale grayish buff; rest of upper parts mixed grayish, 

 buffy, and reddish brown, spotted with black ; sides of head, chin, 

 throat, chest, and sides plain buffy, the chest and sides indis- 

 tinctly streaked with brown in winter ; belly white ; edge of wing 

 yellow. Young : Essentially like adult, but with little if any red- 

 dish brown on upper parts, which have feathers more conspicuously 

 bordered with pale buffy and dull whitish, and the median crown- 

 stripe more ashy whitish ; lower parts entirely dull buffy whitish, 

 the chest distinctly streaked with dusky. 



d l . Darker colored, with (usually) shorter wing and tail and thicker 

 bill ; length about 4.85-5.20, wing 2.35-2.60 (2.43), tail 1.80- 

 2.00 (1.87), exposed culmen .40-.47 (.43), depth of bill at base 

 .28-.31 (.29), tarsus .75-.S2 (.73). Eggs .73 X -58. Hab. 

 Eastern United States and southern Canada, wintering in 

 Gulf States, Bahamas, Cuba, Porto Rico, and Gulf coast of 



Mexico 546. A. savannarum passerinus (WiLs.). 



Grasshopper Sparrow. 



d*. Paler, with (usually) longer wing and tail, and more slender bill; 

 length about 5.00-5.50, wing 2.50-2.60 (2.52), tail 1.75-2.00 

 (1.91), exposed culmen .40-.47 (.42), depth of bill at base .20- 

 .28 (.25), tarsus .75-.80 (.77). Eggs .75 X -57. Hab. Western 

 United States, east to Great Plains, south over table-lands of 



Mexico 546a. A. savannarum perpallidus EIDGW. 



Western Grasshopper Sparrow. 



c 2 . Tail graduated, the lateral feathers much shorter than middle pair 

 (difference "bet ween their tips much greater than length of bill from 

 nostril), the middle pair longest. 



d 1 . Tail not longer than wing, its graduation decidedly less than 

 length of exposed culmen ; bill stout, its depth at base nearly 

 or quite equal to length from nostril; a blackish rictal and 

 (usually) submalar streak. Adult : Head and neck buffy olive, 

 the crown heavily streaked, except along middle line, with 

 black, the hind-neck much more narrowly streaked ; back and 

 scapulars chestnut, feathers centred with black and narrowly 

 edged or bordered with whitish ; wings mainly chestnut ; a 

 blackish streak behind eye, another from corner of mouth, 

 and another along each side of chin and upper throat (last 

 sometimes indistinct) ; chin and throat pale buff or buffy 

 whitish ; chest, sides, and flanks deeper buffy, streaked with 

 blackish ; belly whitish. Young : Above dull brownish buffy, 

 streaked and spotted with black ; beneath light buff, the sides 

 (but not chest) streaked with black; a distinct black streak 

 from corner of mouth, but none on side of chin or throat. 



