BIEDS LANIIDAE — VIREO GILVUS. 
335 
longest The bill is decidedly longer and stouter than that of V. olivaceus, measuring above 
about .61 of an inch instead of .54. It is also narrow towards the end. The size, however, is 
considerably less, the wings being a quarter of an inch shorter. The ash of the crown is not 
so well defined. 
The PhyUomanes barbatulus of Cabanis, from Cuba, (Journal fur Ornithologie, 1855, 467,) is 
very closely allied to the present bird. 
VIREO PHILADELPHICUS, Cassin. 
Vireosylvia philadelphica, Cassin, Pr. A. N. Sc. Phila. V, Feb. 1851, 153.— 1b. VI ; pi. i, f. 1, Philadelphia. 
Sp. Ch. — Without any spurious primary. Second and third quills longest; fourth a little shorter; first about .20 of an 
inch shorter than second, and about equal to the fifth. Above dark olive green, slightly inclining to ashy on the crown ; 
beneath pale sulphur yellow, brightest on the throat and breast. A white line from the bill over the eye, and an obscure white 
spot below it. A dusky line from the commissure through and behind the eye. Length about 5 inches ; wing, 2.75; tail, 
2.10; tarsus, .65. 
Hab. — Pennsylvania to Wisconsin. 
This rare species resembles very closely in size and general appearance the V. gilvus, 
especially those with a decidedly yellow tinge beneath. It will be, however, at once distin- 
guished by the absence of the spurious primary. The under parts are very strongly sulphur 
yellow instead of almost white ; the upper are darker and purer green ; the markings about 
the head are better defined. The bill is smaller. 
List of specimens. 
4364 
4333 
4334 
6842 
6841 
Sex. 
Locality. 
When collected. 
Whence obtained. 
Cleveland, Ohio 
Dr. Kirtland 
Dane county, Wis 
do 
1854. 
1854 
T. M. Brewer 
do 
do 
do 
do 
Th. Thumlien 
VIREO GILVUS, Bo nap. 
Warbling Flycatcher. 
Musckapa gilva, Vieillot, Ois. I, 1807, 65 ; pi. xxxiv. 
Vireo gilvus, Bonap. Obs. Wilson, 1825, No. 123.— Nctt. I, 1832, 309.— Aud. Orn. Biog. II, 1834, 114: V. 
1839, 433 ; pi. 118.— Ib. Birds Amer. IV, 1842, 149 ; pi. 241. 
Muscicapa melodia , Wilson, Am. Orn. V, 1812, 85; pi. 42, fig. 2. 
Sp. Ch. — Third, fourth, and fifth quills nearly equal ; second and sixth usually about equal, and about .25 of an inch shorter 
than third ; the exposed portion of spurious quill about one-fourth the third. Above greenish olive; the head and hind neck 
ashy, the back slightly tinged with the same. Lores dusky; a white streak from the base of the upper mandible above and a 
little behind the eye ; beneath the eye whitish. Sides of the head pale yellowish brown. Beneath white, tinged with very pale 
yellow on the breast and sides. No light margins whatever on the outer webs of the wings or tail. Length about h\ inches ; 
wings nearly 3. Spurious primary one-fourth the length of second. 
Hab.— Atlantic to Pacific coast of the United States. 
In this species the bill is slender ; nearly straight to the tip, which is suddenly deflexed. 
The spurious primary is very short and slender ; its exposed portion about one-fourth that of 
