BIRDS OF NORTH AND MIDDLE AMERICA. 315 



f 



with narrower blackish streaks, forming a broad but not very distinct 

 median stripe; superciliary stripe dull grayish buffy or light buffy 

 wood brown; auricular region similar, but rather darker and duller; 

 tips of middle and greater wing-coverts deep pinkish buff, forming two 

 distinct bands; ground color of back and scapulars more olive-tawny 

 than in adults; otherwise like adults, but under parts, especially the 

 chest, tinged with olive-buffy; length (skin), 130.56; wing, 63.50; tail, 

 57.91; exposed culmen, 9.91; depth of bill at base, 6.10; tarsus, 16.76; 

 middle toe, 12.19. (No. 112118, U. S. Nat. Mus., Segovia River, Hon- 

 duras, July 22, 1887; C. H. Townsend.) 



Northeastern Guatemala (department of Peten), south to Honduras 

 (Ruatan Island," Segovia River, etc.). 



Spizdla pinetorum Salvin, Proc. Zool. Soc. Lond., 1863, 189 (pine ridge of Poctun, 

 department of Peten, n. e. Guatemala; coll. Salvin and Godman) ; Ibis, 1866, 

 193 (do.); 1888, 262 (Euatan Island, coast of Honduras) .—Ridgway, Ibis, 

 1884, 44 (crit); Proc. U. S. >^at. Mus., x, 1887, 587 (Segovia R., Honduras; 

 crit.).— Salvin and Godman, Biol. Centr.-Am., Ave?, i, 1886, 378, pi. 27, fig. 3 

 (Poctun and Vera Paz, Guatemala). — Shaepe, Cat. Birds Brit. Mus., xii, 

 1888, 663 (Poctun, Guatemala; Ruatan I., Honduras). 



\_Spizella\ pinetorum Sclatee and Salvin, Xom. Av. Neotr., 1873, 32. 



S. [pizella] pinetorum Ridgway, Man. N. Am. Birds, 1887, 419. 



[Spizella pusilla] var. pinetorum Baikd, Brewer, and Ridgway, Hist. N. Am. 

 Birds, ii, 1874, 2. 



[Zonotrichki] pinetorum Gray, Hand-list, ii, 1870, 95, no. 7403. 



SPIZELLA SOCIALIS ARIZONJF. Coues. 

 WESTERN CHIPPING SPARROW. 



Similar to S. s. socialis, but decidedly larger (except bill) and colora- 

 tion paler; I'ufous pileum averaging paler, ground color of back and 

 sca)pulars pale wood brown or Isabella color with little, if any, rusty; 

 rump decidedly paler gray, and auricular region decidedlj' paler gray, 

 contrasting much less strongly with the grayish white or pale gray 

 superciliary stripe, the intervening blackish postocular streak also 

 narrower; young much paler and more buffy above, with narrower 

 black streaks, than in S. s. socialh^ and with dusky streaks on chest 

 and sides also narrower. 



AdMlt maZe.— Length (skins), 122.43-137.92 (132.84); wing, 67.06- 

 76.20 (72.14); tail, 53.69-65.28 (60.96); exposed culmen, 9.14-10.41 

 (9.65); depth of bill at base, 5.33-5.84 (5.59); tarsus, 16.00-18.03 

 (17.02); middle toe, 11.43-13.21 (12.19).' 



Adult female.— ljQ^gt\\ (skins), 123.70-133.60 (127.76); wing, 66.55- 

 75.69 (69.60); tail, 53.85-61.47 (58.67); exposed culmen, 8.89-10.16 



'Eighteen specimens. 



