Moore VIREO. 301 
it 
The species of Vireo are most easily tabulated by color, and in 
the following synopsis no regard is paid to external form, but species 
of Vireo and Vireonella are mixed together. It will, however, be 
remembered (page 326) that V. noveboracensis, atricapillus, car- 
mioli, huttont, belli, vicinior, and pusillus fall under the head of Vireo 
proper, with their longer, more pointed wings, and (except in vicinior) 
smaller outer primary—belli, vicinior, and pusillus differing, however, 
from the others in longer tarsi, and longer and more graduated tail, 
with narrower, more pointed feathers. Under Vireonella are to be 
ranged V. modestus, latimeri, pallens, ochraceus, crassirostris, gund- 
lachi, and hypochryseus, each of which has a peculiar form. J. 
modestus in its very small bill approaches closely to huttoni, most of 
the other species having rather larger bills than the average. 
~ Vireo noveboracensis. (Pennsylvania.) 
Common CHARACTERS.—All the species olivaceous above, or ashy; beneath 
whitish, or olivaceous-yellow. Wings with light bands, except in latimert 
and hypochryseus ; tail without spots. A light stripe from bill to above eye, 
but not beyond it, except in carmiolz and hypochryseus. In atricapillus, the 
top of the head is black. ® 
A. Top and sides of head black. Chin and throat white. 
Back olive. 
A white line from the bill to and around eye. 
Beneath white; sides olivaceous; bill black . . atricapillus. 
B. Head above olivaceous or ashy. Chin and throat white; 
rest of under parts white or yellowish. 
A yellow line from bill to and around eye. 
Rest of under parts white; the sides yellowish; 
crissum paler. 
Bill blackish ; two greenish-white bands on the 
wings ; cap bright olive like the back . noveboracensis. 
A whitish line from bill to and around eye. 
Beneath white, except sides and crissum, which are 
pale yellow. Head above ashy; back olive. 
Wings pointed; Ist quill two-fifths the 2d, 
which equals the 8th. Bill .30 from nos- 
