VIREOSYLVIA. 



349 



In a series of Guatemalan birds, presented by Mr. Salvin to the 

 Smithsonian Institution, was one labelled Vii'eo solita7-ius, 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. 



(20,402.) Type. 



Tireosylvia pluml)ea. 



Vireosytvia plumbea, CouES, Pr. A. N. Sc. Phila. 1866 (Fort Whipple, 

 near Prescott, Arizona). 



Hab. 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 ey-e 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 

 *xillars ashy, edged Vireosylvia plumbea. (Arizona.) 



with white. Wings 

 above with two conspicuous white bands ; the innermost quills edged es- 



