120 
NEW-YORK FAUNA — BIRDS. 
FAMILY VIREONID/E. 
Bill moderate, robust, broader than high at the base, which is furnished with bristles . 
Dorsal outline of the upper mandible convex {in one genus much arched), notched; tip 
bent. Tarsus moderate, compressed, with seven or eight scutellce. Tail various. 
Obs. This family now includes three American genera, or two according to the ideas of 
some systematists. 
GENUS VIREO. Vieillot. 
Upper mandible strongly notched ; lower mandible shorter, recurved at the tip, with small 
bristles at the base. Nostrils basal, rounded. Tongue cartilaginous, bifid at the tip. 
Tarsus longer than the middle toe, compressed, with seven scutellae. Wings pointed; 
second or third quill longest. Tail moderate, nearly even. General color with a tinge of 
green. Female resembling the male. 
Obs. A genus peculiar to America. 
THE YELLOW-THROATED GREENLET. 
ViREO FLAVIFRONS. 
PLATE XXXV. FIG. 77. 
(STATE COLLECTION.) 
Vireo Jlavifrons. Vieillot, Ois. de l’Amerique, pi. 54. 
Muscicapa sylvicola. Wilson, Am. Orn. Vol. 1, p. 117, pi. 7, fig. 3. 
V. Jlavifrons. Bonaparte, Annals Lyc. Nat. Hist. Vol. 2, p. 70. Audubon, folio, pi. 119; Orn. Biog. Vol. 2, 
p. 119, and Vol. 5, p. 429. 
Yellow-throated Vireo. Nuttall, Man. Orn. Vol. 1, p. 302. Audubon, Birds of Am. Vol. 4, p. 141, pi. 238, 
Giraud, Birds of Long island, p. 159. 
Characteristics. Olive green. Frontlet, line round the eye, throat and breast yellow ; 
belly white. Wings with two white bands, and with the tail dark 
brown. Length, 5-6 inches. 
Description. Bill with three or four slight bristles at the base. The two exterior toes 
united to the middle as far as the first joint. Tail emarginate. 
Color. Greenish olive. Throat and breast dull lemon-yellow ; lesser wing-coverts, lower 
part of the back, the rump and the flanks bluish ash. Primaries edged with pale ash; 
secondaries bordered with white. Tail deep brown; the three exterior feathers edged on 
each vane with white. Female and young, with duller colors. 
Length, S'S-G'O. Alar extent, 9'0-9 - 5. 
