MELOSPIZA. 431 



f 1 . Lighter colored, with ground-color of upper parts more 

 or less distinctly grayish ; the streaks on chest brown- 

 ish (rarely blackish). 

 g 1 . With shorter wing and tail, stouter bill, general tone 

 of plumage more brown, and streaks both above 

 and below broader ; length 6.00-6.75, wing 2.45- 

 2.80 (2 60), tail 2.58-3.02 (2.75), culmen .50-.54 

 (.52), depth of bill .27-.30 (.29), tarsus .81-.90 (.85). 

 Eggs .79 X -59. Sab. Eastern United States and 

 British Provinces, west to base of Eocky Moun- 

 tains ; breeding chiefly north of 40°, except east 

 of Alleghanies. 



581. M. fasciata (Gmel.). Song Sparrow. 

 p 2 . With longer wing and tail, smaller and more slender 

 bill, general tone of plumage more gray, and 

 streaks, both above and below, narrower ; length 

 6.25-7.00, wing 2.52-3.05 (2.74), tail 2.58-3.05 

 (2.91), culmen .49-.51 (.50), depth of bill .26-. 28 

 (.27), tarsus .86-.93 (.90). Eggs .79 X 58. Sab. 

 Eocky Mountain district, west to Nevada, eastern 

 Oregon, and eastern Washington Territory. 



5816. M. fasciata montana (Hensh.). 

 Mountain Song Sparrow. 

 p. Darker, with ground-color of upper parts decidedly brown 

 or olive, the dark streaks, both above and below, 

 heavier and blacker. 

 g l . Thighs rather light grayish brown, or hair-brown; 

 spots on chest smaller and narrower, always 

 distinct from one another. 

 h\ Larger, with stouter bill ; length 6.25-6.50, wing 

 2.45-2.80 (2.62), tail 2.68-3.14 (2.88), culmen 

 .50-.59 (.53), depth of bill .26-.31 (.28), tar- 

 sus .84-.94 (.90). Eggs .86 X -64. Sab. In- 

 terior districts of California, including eastern 

 side of Sierra Nevada. 



581c. M. fasciata heermanni (Baird). 



Heermann's Song Sparrow. 



h\ Smaller, with slenderer bill; length 4.70-5.75, 



wing 2.15-2.50 (2.35), tail 2.00-2.68 (2.44), 



culmen .50-.55!(.52), depth of bill .24-.28 (.26), 



tarsus .81-.89 (.86). Eggs .74 X -58. Sab. 



Coast of California. 581d. M. fasciata sam- 



uelis (Baird). Samuels's Song Sparrow. 



g*. Thighs deep tawny- or umber-brown ; spots on chest 



larger and broader, often united into a large patch. 



