BIRDS OF NOR1H AND MIDDLK AMERICA. 151 



VIREOSYLVA PHILADELPHICA Cassin. 

 PHILADELPHIA VIREO. 



Adults- (.sv^/v.s' allh). Pilcum plain mouse <j;Tay; hindneck, back, 

 scapulars, i-uni}), and upper tail-coverts plain o-rayish olive-j^reen; 

 \vin*is and tail dark brownish gray or liair Urown witii light olivo- 

 greenish edgings, these l)roader and more grayish (sometimes distinctly 

 gray) on greater wing-coverts; lesser and middle wing-coverts olive- 

 gray; a distinct superciliary stripe of dull whitish; a triangular loral 

 mark (most distinct next to eye) and a more or less distinct postocular 

 streak dusky grayish; auricular and malar regions pale olive, becom- 

 ing j)aler (sometimes whitish) beneath eye; under parts mostly dull 

 sulphur or primrose yellow, the chin and abdomen more or less exten- 

 sively whitish, the yellow deepest on chest; ^' under wing-coverts and 

 axillars pale primrose yellow; inner webs of remiges edged with white; 

 maxilla dark horn color with paler tomia; mandible paler (bluish gray 

 in lifeO; ii"is lirown; legs and feet dusky (bluish gray or grayish blue 

 in life*). 



Yoii/Hj {hi Jirf^t (luturiiii (uui m Intel'). — Similar to adults, but pileum 

 olive, rather than gray, and under parts more extensively and deeply 

 yellow (between sulphur yellow and straw yellow). 



Ad}dtinale.—\jQ\\gi\\ (skins), 110-118 (118.5); wing, Oo-Ol) (GC.T); 

 tail, 44-48 (4."). 7); exposed culmen. 10; tarsus, 10-18 (17.1); middle 

 toe, 9.5-10 (•.».<»).'' 



Adidt fem(d(^.~ljQugih (skins), 108-122 (115): wing. 62-66 (64.()); 

 tail, 43-46 (44.6); exposed culmen, 10; tarsus, 17; middle toe, 10.'' 



Eastern North America; north to Maine, New Brunswick (Grand 

 Falls), Ontario (Moose Factory, Parry Sound, etc.), Manito))a (Fort 

 Pelly; Duck Mountain), Athal)asca (Fort Chippew3"an; Big Cascade 

 Rapids, Athabasca R.), etc.; breeding from Ontario (Moose Factory; 

 Parry Sound?; Lansdown Station) and Manitol)a (Fort Pelly: Duck 

 Mountain) for an undetermined distance southward;'' migrating south- 

 ward over whole of United States east of the Great Plains (more spar- 

 ingly east of Alleghenies) to Central America (Guatemala to Chiri(|ui 

 and Veragua. (No Mexican nor West Indian records.) 



Vireosylvia philadelphica Cassin, Proc. Ac. Nat. Sci. Phila., v, Feb., 1851. 153 

 (near Philadelphia, Pennsylvania; coll. Ac Nat. Sci. Phila.?); vi, 1^52, 

 pi. 1, fig. 2.— Bkeu-ek, Proc. Bost. Soc. N. II., ii, 1857, 108-111 (Wisconsin; 

 habits, geog. range, etc.). — Sclater and Salvin, Ibis, 1859, 12 (Guate- 



"There is much individual variation in the relative extent of the yellow and wliiti' 

 on the under parts, either color prevailing in different specimens. 



^>Six specimens. 



^Five specimens. 



''Said by Nelson (Bull. Essex Inst., viii, 187(>, 102, 152 1 to prohalily l>rcc(l in 

 nortlieastern Illinois, (iO miles south of Chicago, and by ButU'r ( I'.irds of Indiana, 

 1897, 1011) to breed in Starke and Carroll counties, in that State. 



