364 NOTES ON THE 



SPECIFIC CHARACTERS. 



Second and third quills about equal and longest; first a little 

 shorter than fourth, but considerably longer than fifth; back, 

 rump, edges of wing and tail feathers, bright olivaceous green: 

 side of head and neck paler; crown dark ash sharply defined; a 

 well defined whitish line from the bill, over the eye nearly to the 

 occiput; a dark line separating it above, from the ashy crown; 

 a dusky line through the eye; beneath white; under tail coverts 

 pale sulphur-yellow; iris red. 



Length, 6.50; wing, 3.50; tail, 2. 



Habitat, eastern North America. 



VIREO PHILADELPHICUS (Cassin). (626) 



PHILADELPHIA VIREO. 



I had observed the vireos in this section for many years be- 

 fore I had the opportunity to see this one, when on the 18th of 

 May, 1876, Mr. T. S. Roberts obtained one in the immediate 

 vicinity of the city, to which he called my attention. It was 

 an excellent sjDecimen of the male in good plumage. Since 

 then many have been collected not only in this immediate vi- 

 cinity, but most parts of the State; observed in the season of 

 migration from Fillmore county, where Dr. Hvoslef obtained it, 

 to Clay county, on the Red river, where Mr. Lewis found it 

 common, but obtained no nests. That it breeds throughout 

 the State I have little doubt, especially along the Red river 

 where it has been most commonly met, It retires from the 

 State early in September. 



Its general habits are so much like V. gilvus that it is next 

 to impossible to distinguish them by their appearance until in 

 the hand, but when their note is heard the identity is no longer 

 doubtful. Its song has been represented to greatly resemble 

 that of V. olivaceus and I may have heard it when I attributed 

 it to that bird, but if the latter is singing at the same time, 

 there is no difficulty in distinguishing this one. 



specific CHARACTERS. 



Without any spurious primary; second and third quills 

 longest; fourth a little shorter; first about .20 of an inch 

 shorter than second, and about equal to fifth. Above dark 

 olive-green, slightly inclining to ashy on the crown; beneath 

 pale sulphur-yellow, brightest on the throat and breast. A 

 white line from the bill over the eye, and an obscure white spot 

 below it. A dusky line through and behind the eye from the 

 commissure. 



Length, 5 inches; wing, 2.75; tail, 2.10; tarsus, .65. 



Habitat, eastern North America to Hudson's Bay; south in 

 winter to Costa Rica. 



