BIRDS OF NORTH AND MIDDLE AMERICA. 315 



with narrower blackish streak.s, forming a broad but not ver}" distinct 

 median stripe; superciliary stripe dull grayish butfy or light buffy 

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

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

 distinct bands; groiuid color of back and scapulars more olive-tawn}^ 

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

 chest, tinged with oli ve-butfy ; 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.). 



SplzeUa 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 (Ruatan Island, coast of Honduras). — Ridgway, Ibis, 

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

 crit.). — Salvin and Godmax, Biol. Centr.-Am., Aves, i, 1886, 378, pi. 27, fig. 3 

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

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



[^SpizeUal pinetorum Sclater and Salvix, Nom. Av. Neotr., 1873, 32. 



S-lpizella'] pinetorum Ridgway, Man. N. Am. Birds, 1887, 419. 



[Spizella pusillal var. pinetorum Baird, Brewer, and Ridgway, Hist. N. Am. 

 Birds, ii, 1874, 2. 



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



SPIZELLA SOCIALIS ARIZONi^. Coues. 

 WESTERN CHIPPING SPARROW. 



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

 tion paler; rufous pileum averaging paler, ground color of back and 

 scapulars pale wood brown or Isabella color with little, if any, rustj^; 

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

 contrasting much less strongly with the grayish white or pale gray 

 superciliary stripe, the intervening blackish postocular streak also 

 narrower; 3^oung much paler and more buffy above, with narrower 

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

 and sides also narrower. 



Adult nude.— Length (skins), 122.43-137.92 (132.84); wing, 67.06- 

 76.20 (72.14); tail, 53.59-65.28 (60.96); exposed culmen, 9.11-10.41 

 (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).^ 



Adidt fe?ncde.— Length (skins), 123.70-133.60 (127.76); wing, 66.55- 

 75.69 (69.60); tail, 53.8.5-61.47 (58.67); exposed culmen, 8.89-10.16 



^ Eighteen specimens. 



