330 
U. 8 P. R. R. EXP. AND SURVEYS-ZOOLOGY-GENERAL REPORT. 
Somewhat like olivaceus. A short black line on each side the chin. V. altiloquus. 
Sides yellowish green ; under tail coverts greenish yellow. First and sixth quills nearly 
equal, the former much shorter than the fifth. V. virescens. 
Head scarcely, or not at all, different from the hack. No dusky line on the sides of the , 
crown. 
Above dull olive, tinged with ash on the head. Beneath yellowish white. A white 
superciliary line. V. pliiladelpliicus. 
Bright olive green above; throat and breast yellow; belly white; rump ashy... V. jlavifrons. 
B. FIRST QUILL SPURIOUS ; EXPOSED PORTION ABOUT ONE-FOURTH OF THE SECOND. 
Bill stout; color above olive ; beneath white. A ring round the eye, extending to the bill, 
two bands on the wing, and edges of inner secondaries white. Outer tail feathers margined 
with white all round ; first primary one-fourth the second. 
Top and sides of head sharply defined ash gray ; beneath pure white, abruptly tinged 
with greenish yellow on the sides and on the under tail coverts. V. solitarius. 
Top and sides of head faintly defined brownish olive ; beneath tinged with pale fulvous. 
Sides obscurely tinged with yellowish green. V. cassinii. 
Bill slender. No white on the wings. 
Above dull olive, tinged with ashy on the crown. Sides brownish white. V. gilvus. 
C. FIRST QUILL SPURIOUS ; EXPOSED PORTION ABOUT TWO-FIFTHS OF THE SECOND. 
Back olive. Beneath white, tinged with yellow on the sides. 
Top of head ashy olive, little different from the back. V. belli. 
Top of head pure black... V. atricapillus. 
D. FIRST QUILL SPURIOUS ; EXPOSED PORTION ABOUT ONE-HALF OF THE SECOND. 
Above olivaceous. Two white bands on the wings. 
Forehead with sides of the head and breast strongly tinged with yellow... V. noveboracensis. 
No decided yellow on the head or sides of body. V. huttonii. 
