VIREOSYLVIA. « 349 
In a series of Guatemalan birds, presented by Mr. Salvin to the 
Smithsonian Institution, was one labelled Vireo solitarius, which 
exhibits the following peculiarities when compared with a large 
number of North American specimens of V. solitarius. The olive 
of the back extends to, and includes the nape and sides of the neck 
back of the ears, which in the others are ashy plumbeous. The 
upper tail coverts are plumbeous, or ashy, not olive. The sides of 
the throat are sulphur yellow, not white, or with a faint tinge of 
olive. The flanks are white, only faintly tinged with olive, not 
olive green tinged with yellow. The anal region and crissum are 
pure white (the former especially), not yellow. The spurious pri- 
mary is much smaller, and scarcely appreciable ; the second quill is 
rather longer than the fifth, instead of being decidedly shorter. The 
whole wing is longer. The bill is broader at base. 
The entire absence of any similarly marked specimen in the large 
series before me, some of them autumnal birds from Central America, 
induces me to think that the bird just described is really a distinct 
species, though where its headquarters may be, unless in Guatemala, 
I cannot imagine. 
Smith- Collec-| Sex i When : 
sonian, tor’s | and Locality. Collected Received from 
Collected by 
No. | No. | Age. 
20,402 | 
| 
(20,402.) Type. 
954 | .. | Coban, Vera Paz. | Nov. 1859. O. Salvin. | 
Vireosylvia plumbea. 
Vireosyluia plumbea, Coves, Pr. A. N. Sc. Phila. 1866 (Fort Whipple, 
near Prescott, Arizona). 
fTab. Southern Rocky Mountains. In winter to Colima, Mex. 
(No. 37,011.) Whole upper parts and side of head uniform plumbeous ; the 
lower part of the back with a faint wash of olivaceous. <A white line from 
bill to and around eye; 
a dusky line from corner 
of eye to bill. Sides of 
breast and flanks plum- 
beous, paler than the 
back; the flanks very 
slightly tinged with 
olive green. Rest of 
under parts white; the 
axillars ashy, edged _ Vireosylvia plumbea. (Arizona.) 
with white. Wings 
above with two conspicuous white bands; the innermost quills edged ex- 
