BIRDS OP WORTH AND MIDDLE AMERICA. 311 



liwack).— Fisher, N.Am. Fauna, no. 7, 1893,90 (Pahrump Eanch, Nevada, 



Feb.). 

 -S'. [pizella] monticola ochracea Ridgw.vy, :Man. N. Am. Birds, 1887, 418. 

 [Spizella monticola.} Subsp. a. SpizellaochraceaSnAJiVB, Cat. Birds Brit. Mus., xii, 



1888, 659 (Fort Anderson, British America; British Colmnbia). 



SPIZELLA SOCIALIS SOCIALIS (Wilson). 

 CHIPPING SPARROW, 



Adult male. — Pileuui deep cinnamon-rufous to rufous-chestnut, the 

 forehead, more or less extensively, black divided by a more or less 

 distinct median streak of whitish; a broad superciliary stripe of white 

 or very pale gray, margined below by a conspicuous loral and post- 

 ocular streak of black, the latter extending beyond the auriculars and 

 more or less expanded and broken terminally ; auricular and suborbital 

 regions, sides of neck, and hindneck, gray, the last more or less streaked 

 with blackish; back and scapulars light broccoli brown or drab liroadly 

 streaked with black, the black streaks edged, more or less broadlj', 

 with rusty brown; rump and upper tail-coverts deep oli\'e-gray or 

 mouse gray, the latter somewhat darker medially; tail dusky, the 

 rectrices edged with light gray; lesser wing-coverts mouse gray with 

 darker centers; middle coverts dusky, broadly margined terminally 

 with white or buffy, forming a more or less distinct band; greater 

 coverts dusky, edged with pale wood bi'own or buffy brown, usually 

 passing into whitish or pale buffy at tips of feathers; tertials dusky, 

 broadly edged with wood brown or pale buffy brown; primaries dusky, 

 narrowly edged with pale grayish; under parts white, or grayish white, 

 the chest, sides, and flanks more or less strongly shaded with pale gray;' 

 bill black; iris brown; tarsi pale brownish, toes darker; length (skins), 

 118.62-127.00 (124.21); wing, 67.31-T1.12 (69.09); tail, 63.34-59.69 

 (56.90); exposed culmen, 8.89-9.65 (9.40); depth of bill at base, 5.33- 

 5.84(5.59); tarsus, 15.7.5-16.76 (16.26); middle toe, 11.18-12.46 (11.68).' 



Ad/iilt female. — Similar to the male and frequently not distinguish- 

 able, but usually (?) with the rufous pileum slightly less extended and 

 often more or less streaked with dusky;'' length (skins), 114.81-132.84 

 (122.68); wing, 63.26-71.37 (67.06); tail, 61.05-59.69 (54.61); exposed 

 culmen, 8.64-9.66 (9.14); depth of bill at base, 6.33-6.69 (5.59); tarsus, 

 15.49-16.76 (16.26); middle toe, 10.41-12.46 (11.94).' (Winter adults 

 have the colors duller, the markings less sharply contrasted, the gray 

 less pure, the chestnut pileum more or less obscured b}- buffy tips to 

 the feathers, and the bill cinnamon-brownish, paler on the mandible.) 



'Very rarely there is a dusky or chestnut submalar streak. 

 ^ Nine specimens. 



^Many adult males also show more or less of this dark streaking, but apparently 

 not so many in proportion as among females. 



