BIRDS — LANIIDAE VIREO OLIVACEUS. 
331 
Comparative measurements of the species. 
Vireo olivaceus 
:.do 
Vireo flavoviridis 
.do 
Vireo virescens.. 
Vireo altiloquus. 
Vireo philadelphi 
Vireo gilvus 
.do. 
Vireo atricapillu 
Vireo lmttoni 
Vireo eassinii 
Vireo noveboraeensh 
Vireo solitarius .... 
Vireo flavifrons 
Carlisle, Pa | J 
9 
Guatemala 
Florida 
Dane county, Wis.. 
Carlisle, Pa 
.do. 
Pctaluma, Cal J 1 
d ° 
Port Union 
Nemaha, K. T S 
Shawnee Mission,K.T. S 
do 
San Pedro 
California 
Fort Tejon, Cal . . . 
Union county, 111. 
Carlisle, Pa Q 
6.33 
5.22 
6 00 
5.90 
5.75 
5.50 
5.20 
4.70 
5.04 
5.33 
4.80 
5.33 
4.G4 
5.25 
4.30 
4.26 
4.87 
4.20 
5.00 
4.12 
4.75 
4.70 
4.82 
5.00 
5.41 
5.30 
5.41 
4.80 
Stretch Wing 
of wings. 
10.25 
9 75 
9.00 
9.75 
9.50 
2 50 0.70 
1.92 | 0.66 
2.28 0.70 
2.22 | 0.64 

2.40 
0.74 
0.74 
0.69 
0.73 
0.72 
IN claw 
alone. 
Bill 
above. 
0.62 
0.57 
0.20 
0.17 
0.16 
0.52 
0.54 
0.44 
0.40 
VIREO OLIVACEUS, Vieill. 
Red-eyed Flycatcher. 
Musckapa olivacca, Linn. Syst. Nat. I, 1766, 327.— Gm. 1, 1788, 938.— Wilson, Am.Orn. II, 1810, 55; pi. xii, f. 3. 
Lanius olivaceus, Liciit. Verzeich. 1833, 49, No. 525. 
Vireo olivaceus, " Vieillot," Bon. Obs. Wilson, 1826, No. 124.— Siv. F. B. A. II, 1831, 233.— Nuttall, Man. I, 
1832, 312.— Aud. Orn. Biog. II, 1834, 287 : V, 430 ; pi. 150.— Ib. Syn. 1839, 162.— Ib. Birds Amer. 
IV, 1842, 155 ; pi. 243. 
Vireosylvia olivacea, Bon. Geog. & Comp. List, 1838.— Ib. Consp. 1850, 329.— Reinhardt, Vid. Med. f. 1853, 
1854, 82. 
Phyllomanes olivaceus, Cab. Mus. Hein. 1850-'51, 63. 
Red-eye flycatcher, Pennant, Catesbt, Latham. 
Sp. Ch. — Second and third quills about equal, and longest ; first a little shorter than the fourth, but considerably longer than 
the fifth. Back, ruinp, and edges of wing and tail feathers, bright olivaceous green. Side of head and neck paler. Crown 
dark ash, sharply defined. A well defined whitish line from the bill over the eye, nearly to the occiput ; a dark line separating 
it above from the ashy crown. A dusky line through the eye. Beneath white ; under tail coverts pale sulphur yellow. Length, 
about 6.50 inches ; wing, 3.50. Iris red. 
Hah.— Eastern United States to the Missouri ; in Texas to Devil's river ; south to Guatemala. Greenland, (Reinhardt.) 
This is among the largest of the North American Vireos, and is of very plain colors. The bill 
is long and nearly straight to the abruptly curved tip. There is no spurious primary ; the second 
