VIREO. 



355 



■witli a grayish tinge ; the sides of breast and body, with axillars and base 

 of orissum (more faintly), bright yellow; the inner wing coverts and rest of 



Vireo rwveboracetisia. 



crissum much paler, almost white. A broad yellow line from nostrils to, and 

 continuous with a yellow ring round the eye, which is encircled exteriorly by 

 olivaceous ; a dusky loral, but no post-ocular spot. Wings with two covert- 

 bands and innermost secondaries externally broadly yellowish-white ; rest 

 of quills edged externally with olive, except the two outer and tips of other 

 primaries, which are grayish. Rectrices edged externally with olive, except 

 outermost, which is bordered by grayish. All the long quills bordered in- 

 ternally by whitish. Bill blue-black, paler on the edges ; legs dark plumbe- 

 ous. Iris white. 



(No. 10,193, % .) Total length, 4.90 ; wing, 2.40 ; tail, 2.20 ; exposed por- 

 tion of 1st primary, .78, of 2d, 1.66, of longest, (4th and 5th) (measured from 

 exposed base of 1st primary), 1.86 ; length of bill from forehead, .53, from 

 nostril, .30, along gape, .62 ; tarsus, .70 ; middle toe and claw, .50, claw alone, 

 16 ; hind toe and claw, .40, claw alone, .20. 



(No. 1,036, %.) Fresh specimen : Total length, 5.00 ; expanse of wings, 8.00 ; 

 wing from carpal joint, 2.50. Prepared specimen: Total length, 4.75 ; wing, 

 2.50 ; tail, 2.25 ; difference between 10th and longest quills, .45 ; exposed 

 portion of 1st primary, .86, of 2d, 1.56, of longest (measured from exposed 

 base of 1st primary), 1.90 ; length of bill from forehead, .51, from nostril, 

 .29, along gape, .62 ; tarsus, .76 ; middle toe and claw, .52, claw alone, .18 ; 

 hind toe and claw, .46, claw alone, .25. 



Specimens vary slightly in a greater amount of ashy on the head, 

 and less brilliancy of the yellow of head and sides. Sometimes 

 there is a decided ashy shade in the white of throat and jugulum, 

 which again has a very faint tinge of yellowish. 



A young bird does not differ in markings from the adult. 



A specimen marked "Colombia" is rather smaller than the aver- 

 age, but otherwise similar. 



The measurements of the feet of No. 10,193, %, appear to be 

 quite abnormal, and I add those of No. 1,036, %, as more accurately 

 expressing the average in these respects. 



