BIRDS OF NORTH AND MIDDl.K AMERICA. 



205 



ing' two more or less distinct bands (more or less obsolete in worn 

 plumage); narrow orbital riiiy (interrupted at each angle of eye) and 

 supraloral streak dull white; auricular and sul)orbital regions pale 

 grayisli brown or brownish o-ray; a dusky mark at antcrioi' angle 

 of e3^e; median under parts (bill white, more or less tinged with buffy 

 3^ellowish, especially on chest, the sides and flanks light olive-yellow; 

 under tail-cov(n"ts and axillars pale sulphur yellow, under wing-coverts 

 yellowish whitt^: inner webs of remiges edged with dull yellowish white; 

 maxilla horn l)rownish. darker terminally; mandible paler brownish (in 

 dried skins); iris brown; legs and feet dusky horn color (l)luish gray 

 in life?). 



Young. — j\Iuch like adults, l)ut pileum and hindneck soft drab, back 

 and scapulars dark dral), under parts nearly pure white, with sides, 

 flanks, and under tail-coverts tinged with sulphur yellow, wing-bands 

 more distinct, and tertials edged with yellowish white or pale sulphur 

 yellow. 



Adult male.—hQwgXXx (skins), !>T-113 (106.8); wing, 52-58.5 (55.5); 

 tail, 41.5-46.5 (44.7); exposed culmen, 9-10 (O.S); tarsus. 1S-1<) (18.6); 

 middle toe, 1).5-10.5 (t».t>)." 



Adult female.— hQwgth. (skins), 100-109 (104); wing, 53-56.5 (55.1); 

 tail, 44-47 (45.4); exposed culmen, 9-10 (9.9); tarsus, 18-19.5 (18.9); 

 middle toe, 9.5-11 (9.9).^ 



Prairie districts of Mississippi Valley, from South Dakota, southern 

 Minnesota, Iowa, northern Illinois, and northwestern Indiana south- 

 ward to eastern Texas and northern Tamaulipas (Mier; Guerrero); in 

 winter southward over greater part of ^Mexico, as far as States of 

 Oaxaca (Tehuantepec City; Santa Efigenia), Guerrero (Acapulco), and 

 Jalisco; accidental in Massachusetts. 



Vireo hellil AunuBox, Birds Am., oct. ed., vii, 1844, 333, pi. 485 (Fort T'liion, 

 Dakota; type in coll. U. S. Nat. Mus. ). — Cassin, Proc. Ac. Nat. Sci. Fhila., 

 1851, 150. — WooDHousE, in Rep. Sitgreaves' Expl. Zufii and Col. R., 1853, 

 76 (Texan).— Hov, Ann. Rep. Smithson. Inst, for 1864 (1865), 437 (Mis- 

 souri). — ScLATER, Cat. Am. Birds, 1862, 42 (Missouri). — Baikd, Review Am. 

 Birds, 1,866, 358 (localities in Kansas, Arkansas, and Texas). — Coues, Check 



(' Fifteen specimens. 



'' Seven specimens. 



Adult males from different localities average, respectively, as follows: 



