BIRDS OF NORTH AND MIDDLE AMERICA. 395 



P. l^asserella'] iliaca unalaschensh Ridgwav, Proc. U. S. Nat. Mus., iii, Mar. 27, 

 1880, 3, part; Man. N. Am. Birds, 1887, 434, part. 



Passerdln illnrii unulaxcliaiKinHinaw.w, Nom. N. Am. Birds, 1881, no. 285(/, part. — 

 American Ornithologists' Union, CheckList, 1886, no. 585o, part. — Bendike, 

 Auk, vi, 1889, 109, part (Sewayli, Vancouver I., breeding). — Faxxin, Check 

 List Birds Brit. Col., 1891, 37 (coast, including Vancouver I., summer 

 resid.) — Rhoads, Proc. Ac. Nat. Sci. Phila., 1893, 51, 63, part (Vancouver I.; 

 Kalama, Washington; Humboldt Bay, California). 



Pwiserella ilkiai nnalashk-enxis Ridgway, Proc. U. S. Nat. Mus., iii, Aug. 24, 1880, 

 181, part. — Anthony, Auk, iii, 1886, 169, part (s. w. Oregon). 



Pa sserelia iliaca fuliginosa Ridgway, Auk, xvi, Jan., 1899, 36 (Neali Bay, Wash- 

 ington; U. S. Nat. Mus.); xvii, 1900, 30 (breeding range). 



PASSERELLA ILIACA SCHISTACEA (Baird). 

 SLATE-COLORED SPARROW. 



Similar to J', i. imaJaachenisiH but pileum, hindneck, back, scapulars, 

 and rump purer gray (mouse gray or deep smoke gray) with little if 

 an^' brown tinge; upper tail-coverts, tail, and wings brighter brown 

 (nearly mars brown), more strongly contrasted with the gray of back, 

 etc. ; bill averaging smaller. 



Arhilts (.s-e.rt-.s- (dilve). — Pileuui, hindneck, sides of head and neck, 

 back, scapulars, and rump plain mouse gray, the auricular region 

 streaked with whitish; upper tail-coverts and tail russet-brown or mars 

 brown, in strong contrast with gray of rump, etc. ; wings brown, the 

 edges of greater coverts and secondaries brighter, more rusty, brown, 

 the outermost primaries edged with pale brown ; supraloral spot grayish 

 white; suborbital region speckled with white; under parts white, the 

 chest, sides of breast, and sides of throat marked with rather large 

 deltoid spots of sepia brown; lower breast (sometimes middle of throat 

 also) with small spots or specks of the same color, and sides and flanks 

 striped with the same; under tail-coverts grayish brown centrally, 

 broadly margined with buffy whitish or pale buff. 



Young. — Essentially like adults, but gray of upper parts tinged 

 with brown, middle and greater wing-coverts indistinctly tipped with 

 paler rustj-^, and under parts duller white, with the brown markings 

 less sharpljr defined, less triangular in form. 



Admit maZe'.— Length (skins), 158.24-181.86 (168.40); wing, Y8.23- 

 87.12 (81.79); tail, 73.15-87.12 (79.76); exposed culmen, 11.18-12.70 

 (12.19); depth of bill at base, 8.89-10.41 (9.91); tarsus, 21.59-24.64 

 (23.37); middle toe, 13.97-16.26 (15.24); hind claw, 8.89-12.45 (11.43).^ 



Adult femcde.—'h&ngth (skins), 152.91-167.13(162.81); wing, 76.71- 

 81.53 (79.60); exposed culmen, 11.43-12.70 (11.94); depth of bill at 

 base, 9.66-10.67 (10.16); tarsus, 22.86-23.62 (23.37); middle toe, 14.48- 

 16.75 (16.24); hind claw, 8.38-11.94 (10.67).' 



' Fifteen specimens. ^ Five specimens. 



