BIRDS OF NORTH AND MIDDLE AMERICA. 395 



P. \^asserella'] iliaca HnalaKchemix Ridgwav, Proc. U. S. Nat. Mns., iii, ^lar. 27, 

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



Pa^vxerf'Ua iUant nnal((Kc]ieriM.'< JiiDGw ay , Noni. N. Am. Birds, 1881, no. 2;S5'(, i)art. — 

 American Ornithouxjists' Union, Check List, 188H, no. 585o, part. — Bendire, 

 Auk, vi, 1889, 109, part (Sewash, Vancouver I., breeding).— Fannin, Check 

 List Birds Brit. CoL, 1891, 37 (coast, inchiding Vancouver L, summer 

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

 Kalama, Washington; Humboldt Bay, California). 



PwssereUa iliaca unalushkeiixis Ridgway, Proc. U. S. Nat. Mus., iii, Aug. 24, 1S80 

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



Paaserella iliaca faliginom Ridgway, Auk, xvi, Jan., 1899, 36 (Neah Bay, Wash- 

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



PASSERELLA ILIACA SCHISTACEA i Baird). 

 SLATE-COLORED SPARROW. 



Similai- to P. i. iDialaacheihsis but pileuin. hiiidiieck, back, scapukrs, 

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

 any brown tinge; upper tail-coverts, tail, and wings brighter brown 

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

 etc.; bill averaging smaller. 



Advlts {><e.i'ts alilf-). — Pileum. hindneck. sides of head and neck, 

 back, scapulars, and rump phiiii 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 In-ighter, more rusty, brown, 

 the outermost primaries edged with pale ])ro\vn ; supraloral spot grayish 

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

 chest, sides of breast, and sides of throat luarked 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 T)rowu centrally, 

 broadly margined with })urt'y whitish or pale Inifl'. 



JTy?//y^/.— Essentially like adults, but gray of upper parts tinged 

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

 paler rusty, and under parts duller white, with the brown markings 

 less sharp!}' detined. less triangular in form. 



Adult mah\ — Length (skins), 158.i?-J:-lSl.8«; (ItiS.-iO); wing, Ts.23- 

 87.12 (81.79); tail. 73.15-87.12 (79.76); exposed culmen. Il.'l8-12.70 

 (12.19); depth of bill at base, 8.89-10.41 (9.91); tarsus, 21.59-24.61: 

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

 Adalt fenvdc—ljength. (skins), 152.91-167.13(162.81); wing, 76.71- 

 81.53 (79.50); exposed culmen, 11.43-12.70 (11.94); depth of bill at 

 base, 9.65-10.67 (10.16); tarsus, 22.86-23.62 (23.37); middle toe, 14.48- 

 15.75 (15.24); hind claw, 8.38-11.94 (10.67).' 



1 Fifteen specimens. 2 Five specimens. 



