VIREO. 



359 



19iS6 



Virtobullii, AUD. (Dacota,) 



vliti'; the sides, axillars, and crissnm pale yellow (sides of lower, neck 

 hii.l of breast glossed with olivaceous), faintest on the longer feathers of the 

 latter. Two rather nar- 

 row bands on the wing 

 coverts, and the outer 

 edges of innermost se- 

 condaries white ; the 

 other quills edged with 

 faded olivaceous. Inner 

 edges of quills whitish. 

 Tail feathers brown, 

 edged externally with 



olive; internally fading into paler brown. Median portion of rump feathers 

 concealed pale yellowish. Bill horn-oolor above, pale below. Legs plum- 

 beous. " Iris brown." 



First quill spurious ; not quite half the 2d, which is about equal to the 8th ; 

 3d and 4th quills longest ; 5th scarcely shorter. Tail nearly even, or a little 

 rounded, the feathers narrow. 



(No. 1,926.) Total length, 4.20; wing, 2.18; tail, 1.90; exposed portion 

 of 1st primary ..60, of 2d, 1.32, of longest, 3d (measured from exposed base 

 of 1st primary), 1.60 ; length of bill from forehead, .51, from nostril, .28, along 

 gape, .60 ; tarsus, .75 ; middle toe and claw, .54; hind toe and claw, .42. 



The above description is taken from a type specimen received from 

 Mr. Audubon, and represents the average spring plumage. Autum- 

 nal skins are rather brighter, and there is occasionally an ochraceous 

 tinge on the white of the under parts. 



This species at first sight appears like a miniature of V. gilvus, 

 the head being almost exactly similar. The back is, however, much 

 brighter olive, the sides and crissum deeper yellow. The superciliary- 

 light stripe is shorter. The white markings of the wings are want- 

 ing in gilvus. The wing, tail, and feet are entirely different in their 

 proportions. 



(1,926.) Type. (26,229.) With eggs. (19,085.) Witt eggs. (34,361.) 4.80; 6.90. 



