SPIZELLA. 417 



stripe dirty brownish white, scarcely, if at all, yellowish anteri- 

 orly; throat not distinctly whitish, and chest dirty brownish white, 

 streaked with dusky. Length 6.30-7.65, wing 2.80-3.15, tail 3.05- 

 3.35. Eggs .83 X -59j similar in color to those of Z. intermedia. 

 Sab. Eastern Worth America, breeding from northern United States 

 northward ; west to edge of Great Plains, casually to Utah. 



558. Z. albicollis (Gmel.). White-throated Sparrow. 



Genus SPIZELLA Bonaparte. (Page 385, pi. CIX., fig. 5.) 



Species. 



Common Characters. — Back and scapulars brownish, streaked with black; 

 lower back, rump, and upper tail-coverts plain grayish or grayish brown, or else 

 very indistinctly streaked ; greater wing-coverts (and usually middle coverts also) 

 tipped, more or less distinctly, with white or light brownish ; lower parts plain 

 whitish, grayish, or pale brownish (belly always white) in adult, streaked with 

 dusky in young, except of S. atrigularis. 



a 1 . With head more or less conspicuously marked, but without black on chin or 



throat ; young, streaked beneath. 



b\ Wing with two distinct white bands ; lower mandible yellow ; adult with 



dusky spot in centre of chest. (Adult : Top of head and streak behind 



eye deep rufous ; rest of head and neck plain ashy, the hind-neck tinged 



with brown ; back mixed rufous and light tawny or dull buffy, streaked 



with black; lower parts pale ashy anteriorly and laterally, the sides 



and flanks tinged with buffy (strongly so in winter). Young : Top of 



head dull brownish, streaked with dusky ; superciliary stripe and sides 



of head and neck dull whitish, finely streaked with darker ; chest pale 



dull buffy, tinged laterally with rusty, and distinctly streaked with 



dusky. Nest on ground or in low bushes, composed of dried grasses, 



feathers, etc. Eggs 3-5, colored like those of ZonotricMa leucophrys.') 



c 1 . Plumage darker throughout, the ground-color of back largely rusty or 



rufous, and the black streaks broader ; rufous of crown darker, and 



never with more than a slight indication of median ashy stripe ; 



outer webs of greater wing-coverts and tertials bright rufous or 



rusty ; whitish or light ashy edgings to tail-feathers narrower, wings 



and tail shorter, bill rather stouter, etc. ; length about 6.00-6.50, 



wing 2.80-3.10 (2.95), tail 2.60-2.90 (2.70). Eggs .75 X -58. Sab. 



Eastern North America, breeding in Labrador and region about 



Hudson's Bay; south, in winter, through eastern United States, 



west to edge of Great Plains. 



559. S. monticola (Gmel.). Tree Sparrow. 

 c 2 . Plumage paler throughout, the ground-color of back with little if any 



53 



