294 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



larger feet; back and scapulars browner (deep broccoli brown or 

 light bistre); pileum and hindneck more brownish slate; throat and 

 chest much lighter gray (smoke gray); vinaceous-cinnamon of sides 

 and iianks deeper, and with less white on lateral rectrices; bill darker 

 (horn color or dull flesh color in dried skins), with basal portion of 

 maxilla dusky; legs and feet horn color. 



Young. — Pileum and hindneck deep brownish gra}^ streaked with 

 dusky; back and scapulars broccoli brown streaked with dusky; sides 

 of head dull gray or brownish gray obsoletely streaked with duskj^; 

 chin and throat pale butfy grayish, the lower part of the latter streaked 

 with dusky grayish; chest more buffy, with streaks broader, darker, 

 more wedge-shaped; sides pinkish buff anteriorly passing into buffy 

 grayish on flanks, streaked with dusky; maxilla dusky, mandible light 

 brownish basally, dusky terminally; otherwise, much like adults. 



Adult male.— Len^ti (skins), 138.43-144.27 (140.97); wing, 67.82- 

 69.85 (68.58); tail, 58.17-59.18 (58.67); exposed culmen, 12.70-13.21 

 (12.95); depth of bill at base, 6.60-7.11 {Q.^Q)', tarsus, 20.83-21.08 

 (20.83); middle toe, 14.48-14.73 (14.60).^ 



Adult female.— Length (skins), 136.14-139.19 (137.67); wing, 63.50- 

 64.52 (64.01); exposed culmen, 12.70; depth of bill at base, 6.60; 

 tarsus, 20.57-20.83 (20.57); middle toe, 14.22-14.48 (14.35).^ 



Guadalupe Island, off' Lower California. 



Jimco insularis Ridgway, Bull. U. S. Geol. and Geog. Surv. Terr., ii, no. 1, Apr. 1, 

 1876, 188 (Guadalupe Island, Lower California; U. S. Nat. Mus.); Bull. Nutt. 

 Orn. Club, ii, 1877, 60, 61; Nom. N. Am. Birds, 1881, no. 223.— American Or- 

 nithologists' Union, Check List, 1886, no. 57:^, — Bryant, Bull.Cal. Acad. Sci., 

 no. 6, 1887, 300 (habits; descr. nest and eggs) . — Sharpe, Cat. Birds Brit. Mus., 

 xii, 1888, 652.— TowNSEND, Proc. U. S. Nat. Mus., xiii, 1890, 138. 



J. [unco'] insularis Ridgway, Man. N. Am. Birds, 1887, 425. 



JUNCO BAIRDI Belding. 

 BAIRD'S JTJNCO. 



Adults in summer {sexes alike). — Pileum and hindneck brownish 

 slate-gray or smoke gray, this color extending over sides of head, but 

 fading below to ver}" pale gra}^ (almost grayish white) on malar region, 

 chin, throat, and chest; lores dusky or blackish slate; back and scapu- 

 lars cinnamon, sometimes tinged with cinnamon-rufous and occasion- 

 all}" duller (near wood brown) in middle of back; rump Isabella color, 

 becoming hair brown or grayish dral) below and on upper tail-cov- 

 erts; outer surface of greater wing-coverts and tertials, mostl}^ wood 

 brown or Isabella color; secondaries, primaries, and eight middle 

 rectrices dusky grayish, edged with pale olive-grayish, these edgings 

 much lighter and more sharply defined on primaries; outermost 



'Three specimens. ^Two si^ecimens. 



