58 
J 
NORTH AMERICAN BIRDS. 
2. B. pusilla. Crown dull rufous, indistinctly divided medially ; 
lores entirely whitish ; wing-bands not sharply defined, pale brown. 
No black spot on breast; jugulum tinged with buff. Bill entirely 
light brownish-red. Length, 5.75; wing, 2.70; tail, 2.80. Nest 
both on ground and in bushes ; of grass, lined with hairs or fine 
roots. Eggs pale clay-color, with ferruginous blotches. Hab. 
Eastern Province of United States. {Field Sparrow .) 
II. Streak behind the eye blackish. No rufous tinge on side of breast. 
Egg deep blue , with black dots and streaks round larger end. 
3. S. socialis. Crown bright rufous, not distinctly divided, gen- 
erally plain. Forehead black, divided medially with white. Streak 
of black on lore and behind eye. Rump pure bluish-ash. Bill 
blackish, lower mandible paler. Nest never on ground. Eggs 
bright bluish-green, sparingly spotted with dusky about larger end. 
Auriculars deep ash, in strong contrast with pure white of 
the superciliary stripe and throat ; breast without ashy tinge. 
Dorsal streaks broad. Length, 5.75 ; wing, 2.80 ; tail, 2.30. 
Hab. Eastern Province of United States. ( Chipping Sparrow. ) 
var. socialis. 
Auriculars lighter ash, less strongly contrasted with the 
f white above and below; breast strongly tinged with ash. 
Dorsal streaks narrow. Length, 6.00; wing, 3.00; tail, 2.90. 
Hab. Western Province of United States, and table-lands of 
Mexico. {Arizona Chippy .) . . . . var. arizonce. 
b. Crown light grayish-brown, with distinct black streaks ; young 
differing in streaked under parts. 
4. B. pallida. Nesting and eggs as in socialis. 
Crown divided medially by a distinct pale stripe ; whitish 
superciliary stripe, and blackish post-ocular streak sharply 
defined. A dusky sub-maxillary streak. Nape ashy in con- 
trast with the crown and back. Length, 4.75; wing, 2.50; 
tail, 2.40. Hab. Plains of United States, from the Saskatche- 
wan southward. ( Clay -colored Sparrow .) . . var. pallida. 
Crown without a distinct median stripe. Markings on side 
of head not sharply defined. No dusky sub-maxillary streak, 
f and nape scarcely different from crown and back. Length, 
5.00; wing, 2.50; tail, 2.60. Hab. Middle and Western Prov- 
inces. {Brewer's Sparroiv.) . . . • . . var. breweri. 
II. Crown not different from the sides of head ; no light superciliary stripe. 
5. B. atrigularis. Head and neck ail round, and rump, uniform 
dark ash, gradually fading into white on the abdomen; wing- 
bands indistinct ; bill light brownish-red. Ad. Lores, chin, and 
upper part of throat black. Juv. without black about the head. 
Nesting and eggs unknown. Length, 5.50 ; wing, 2.50 ; tail, 3.00. 
Ilab. Adjacent portions of Mexico and southern Middle Province 
of United States (Fort Whipple, Arizona, Coues ; Cape St. Lucas, 
Xantus). {Black-chinned Sparrow.) 
