ICTERIA. 299 
Hab. Kastern province of United States; rare north of Pennsylvania. 
Mexico and Guatemala? Not noted from West Indies. 
I am still much perplexed in reference to the distinctness of the 
Mexican I. velasquezii from I. virens. All the Chats I have seen 
from localities south of the United States (four in the Smithsonian 
collection) agree in having the bill lighter colored, the upper man- 
dible brown with lighter lower edge, the lower nearly whitish. All 
have the sides and crissum tinged with brown. The size is rather 
less than in viridis, the proportions about the same; the tail if any- 
thing shorter, not longer. In two specimens the bill is shorter, 
higher, and the culmen more curved than in any viens I have seen; 
in one it is about the same, and in another (13,601) it is longer and 
more slender. The white maxillary patch is rather restricted. 
In no adult male specimens from the United States do I find the 
bill other than intense black, and the crissum pure white. The 
flanks are a little brownish, but less so than in Mexican skins. A 
female from Carlisle, Pa., however (2,312; May), has the crissum- 
and flanks precisely as in southern specimens ; the bill, also, is nearly 
as light colored. 
I. longicauda has the tail much longer, and the upper parts much 
grayer. The mandibular white extends farther back, as does the 
white at the posterior corner of the eye. Young birds from Cape 
St. Lucas differ from adults in the light-colored bill, and brownish 
wash on the flanks and crissum ; but the back, instead of being pure 
olive green, has a brownish faded appearance. 
Cabanis (Journal, 1860, 403), in summarily uniting all described 
Icteria into one species, entirely overlooks the great difference in 
the length of the tail of eastern and western specimens. 
Icteria auricollis, of Licht., doubtless refers to L. velasquezit. 
Specimens of this species are in the Smithsonian museum from 
all parts of the United States east of the valleys of the lower Mis- 
souri, as far west as Fort Riley and Neosho Falls, Kansas, and 
south of Cape May and Carlisle ; also— 
| 
Smith- Collec-| Sex Wao 
sonian| tor’s | and Locality. Collected Received from Collected by 
No. | No. | Age. , 
19,080 | 37 | .. | Fort Cobb, Ark. May 27. J. H. Clark. C. S. McCarthy. 
22,371 |43,775 | .. | Mexico. wd Verreanx, 
7,954 ae c Guatemala. ob J. Gould. 
13,691 oh Ki 
20,404 cs ~ Choctun, Vera Paz. Jan, 1860. | O. Salvin. 
