BIRDS OF NORTH AND MIDDLE AMERICA. 253 



[Peac-ea riificeps.] Subsp. /i. Peiu-va boucardi Sharpe, Cat. Birds Brit. }ilus., xii, 

 1888, 714, part, excl. syn. Peiicxa rajkeps eri'inwca Brown (La Puebla; 

 Orizaba) . 



Peiii-ivii ruficL'ps (not Aiiimodromus rujiceps Casain) Sumiciikast, Mem. Bost. Soc. 

 N. H., i, 1869, 552 (temperate region Vera Cruz; Puente Colorado, Puebla). 



AIMOPHILA CASSINII (Woodhouse). 

 CASSIN'S SPAKROW, 



Somewhat like A. (eatimlis and A. hottcri^ butniuch grayer above 

 and paler and more uniform below, the back spotted or barred in.stead 

 of streaked, the flanks usually distinctly streaked, and the median 

 dark stripe of middle pair of rectrices with serrated edges. 



Adultii (se.vex alike). — Above light brown, broadly streaked with light 

 gray, the pileum streaked also with black or dusky; scapulars and 

 interscapulars marked with dusky subterminal spots or bars in a light 

 brown held, the margins of the feathers light ash graj^; upper tail- 

 coverts with roundish, cordate, or transverse subterminal spots of 

 blackish, and margined terminally with pale grayish; middle rectrices 

 light brownish gra}^ with a narrow, pointed median stripe of duskj^, 

 this more or less irregular or serrated along edges, the points throwing 

 off more or less distinct indications of darker bars across the gray on 

 either side; edge of wing pale yellow; under parts with chest, sides, 

 and flanks very pale brownish gray, the flanks sometimes distinctly 

 (often broadly) streaked with brown or dusky; elsewhere beneath dull 

 white (under tail-coverts sometimes pale buffy); sides of throat some- 

 times marked with a dusky subnialar streak. 



Adult maZc^— Length (skins), 130.81-147.32 (139.45); wing, 59.69- 

 67.31 (64.26); tail, 60.96-71.63 (67.06); exposed culmen, 10.16-11.68 

 (10.92); depth of bill at base, 5.59-7.11 (6.10); tarsus, 18.64-20.57 

 (19.56); middle toe, 13.97-16.00 (14.99).^ 



Adult female.— l^^wg'Co. (skins), 134.62-147.32 (141.99); wing, 60.96- 

 64.26 (62.74); tail, 63.50-69.85 (66.29); exposed culmen, 10.16-11.94 

 (10.92); depth of bill at base, 5.59-6.35 (5.84); tarsus, 18.29-20.57 

 (19.30); middle toe, 14.48-15.24 (14.99)." 



Arid division of the Lower Austral Pi'ovince, chiefly within the 

 United States; south into northern Tamaulipas (Guerrero) and \uevo 

 Leon, and in northwestern Mexico as far as State of Sinaloa (Mazatlan, 

 March, April); north to central and western Kansas (Fort Hays, etc.), 

 and southern Nevada (Timpahute Valley); east to coast of Texas (Cor- 

 pus Christi, etc.); west to Arizona. 



Zonotrichia cassinii Woodhouse, Proc. Ac. Nat. Sci. Phila., vi, Apr., 1852, 60 

 (San Antonio, Texas; coll. Ac. Nat. Sci. Phila.). — Baikd, in Stansbury's 

 Rep. Gt. Salt Lake, 1852, 330 (Texas) . 



Passerculus cassinii Woodhouse, Bep. Sitgreaves' Expl. Zuni and Col. R., 1853, 

 85, pi. 4 (near San Antonio, Texas). 



^ Twenty specimens. ' Five specimens. 



