318 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Spizella domestica arizoniv Ridgwav, Proc. U. S. Nat. Mus., iii, Aug. 24, 1880, 179; 

 Nom. N. Am. Birds, 1881, no. 211o. — Brown, Bull. Nutt. Orn. Club, vii, 

 1882, 38 (Kendall Co., Texas, winter) .—Coues, Check List, 2d ed., 1882, no. 

 270. 



S.[_pizella^ (L\_o)nesfica'\ (irizonir Coues, Key N. Am. Birds, 2d ed., 1884, 380. 



SPIZELLA PUSILLA PUSILLA (Wilson). 

 FIELD SPARROW. 



Adults {sexes «7/Av-).^Pileum rusty brown (intermediate between 

 russet and cinnamon-rufous), sometimes with more or less of an indi- 

 cation of a median stripe of grayish (this rarely distinct); sides of head 

 light gra}" (smoke gra}^ or olive-gray), relieved by a rusty brown post- 

 ocular streak; back and scapulars rust}' brown, narrowh' streaked with 

 black, often streaked also (on edges of feathers) with light dull buH'y 

 or clay color; rump and upper tail-coverts light brown, or hair brown, 

 sometimes indistinctly streaked with darker; tail deep hair brown, the 

 rectrices edged with pale gra^^ish; larger wing-coverts and tertials 

 dusk}" centrally; middle and greater coverts tipped with whitish, form- 

 ing two more or less distinct bands, the greater coverts edged with 

 pale brown, more gravish on outermost, more rust}" on innermost, 

 feathers; outer web of tertials broadly edged with pale rusty brown 

 or cinnamon; under parts pale grayish buffy anteriorly and laterally, 

 the buffy tinge most pronounced on chest, fading into dull white on 

 throat, abdomen, etc. ; a more or less distinct rusty brown patch on 

 each side of chest; bill vinaceous-cinnamon or cinnamon-rufous; iris 

 brown; tarsi and toes pale brownish. (In winter more strongh" suf- 

 fused with buffy, especially the under parts.) 



Young. — Much duller in color than adults, with the chest and sides 

 more or less distincth" streaked with dusky; pileum dull brown (not 

 rust}-), usually (^) narrowly and indistinctly streaked with dusky; other- 

 wise essentially like adults. 



Adult male.—LQngih (skins), 120.65-138.94 (131.32); wing, 62.23- 

 67. 31 (64. 52) ; tail, 58. 42-65. 28 (61. 98) ; exposed culmen, 8. 64-9. 91 (9. 40) ; 

 depth of bill at base, 5.84-6.60 (6.10); tarsus, 17.27-18.54 (17.78); mid- 

 dle toe, 12.19-12.95 (12.45). ^ 



Adult female.— Length (skins), 118.87-135.13 (126.75); wing, 59.44- 

 62.74 (60.96); tail, 54.36-62.23 (58.93); exposed culmen, 8.64-9.91 (9.14); 

 depth of bill at base, 5.84-6.10 (6.10); tarsus, 17.27-18.29 (17.78); mid- 

 dle toe, 11.94-12.70 (12.19).- 



^ Eighteen specimens. 



^ Seventeen specimens. 



Specimens from west of the AUeghenies average slightly larger, especially in length 

 of wing and tail, than those from east of the mountains, and also very slightly paler 

 in coloration, the variation in both respects being in the direction of S. p. aremtced. 

 Some specimens from the prairie districts of the upper Mississippi Valley incline quite 



