98 VIREO FLAVIFRONS, YELLOW-THROATED VIREO. 



1842, 149, pi. 241.— GiR., B. L. L 1844, IGl.— Woodh., Sitgr. Rc)). 1853, 76.— Bd., 

 B. N. A. 1858, ;?35.— CoiiES, Key, N. A. Birds, 1872, 120, fig. (j:?.— Thippe, Pr. 

 Bost. Soc. XV, 1872, 2:{() (Iowa, breeding). — Snow, B. Kaus. 187;J, 5 (Kansas, 

 breeding) ; and of most United States writers. 



Vircosyh-hi qUra, C.vss., Pr. Phila. Acad. 1851, 15:5.— Scl., P. Z. S. 185(), 298 (Cordova); 

 1858, ;502 (OaxacaV— Bd., Rev. 1866, 342.— Sumicii., Mem. Bost. Soc. i, 1869, 

 548 (Vera Cruz; migratory).— B. B. & R., N. A. B. i, 1874, 368. 



Muscicapa melodla, Wils., Am. Orn. v, 1812, 85, pi. 42, f. 2. 



b. swainsoni. 



Vireo swahifioiii, Bd., B. N. A. 1858, 336 (in text).— Coues, Ibis, 1865, 164 (Arizona).— 



CoUES, Pr. Pbila. Acad. 1866, 73 (Arizona). 

 Vireosylvia sivahisoni, Bd., Rev. 1866, 343.— Aikex, Pr. Bost. Soc. 1872, 198 (Colorado).— 



Stev., U. S. Geol. Surv. Ter. 1870, 464 (Wyoming). 

 Vireonyh-ia ;jUva var. swainsoni, Coop., B. Cal. i, 1870, 116.— B. B. & R., N. A. B. i, 1874, 371. 

 Vino (jilcits var. sivainsoiii, Coues, Key, 1872, 121, lig. 64. 

 Viieo (jilvus, Coop. & Suck., N. H. Wasb. Ter. 1859, I88.-C00P., Am. Nat. iii, 1869, 35 



(Rocky Mountains). — Allen, Bull. M. C. Z. iii, 1872, 1.56, 176 (Kansas, Colorado, 



Utab ; includes botb varieties). 



Hab. — Of true gilviis, Eastern North America to high central plains ; north to Fort 

 Simpson. Var. swainsoni, wooded regions from Plains to Pacific, United States. 



Lieutenant Warren^ s Expedition. — 4729, Missouri River; 5305, Fort Lookout. 



Later Expeditions. — 60769, Green River, Wyoming (var. sivninsoni). 



Not obtained by Captain Raynolds' Expedition. • 



These specimens are referable to the (/ilrus proper, excepting No. 60769. "sicainsoni" 

 seems to be scarcely distinguishable even as a variety. A supposed difference in tlie 

 'ving-formnla proves not to hold always. The bird is, however, paler and grayer, like 

 ■jthers from the same region. 



The Warbling Vireo is stated by Dr. Hayden to be abundaut along 

 \he wooded bottoms of tbe Missouri, where, however, 1 never observed 

 tt, though I found it quite common on the lied River of the North. It 

 is numerously represented throughout the greater part of the United 

 States east of the Missis.sippi ; reaching the middle districts about the 

 middle of April, and remaining through the greater part of September, 

 breeding in gardens and the streets of cities, among the high shade 

 .trees, rather than in the forests. 



VIREO FLAVIFRONS, Vieill. 



Yellow-tliroated Vireo. 



Vireo flavifrons, Vieill., Ois. Am. Sept. i, 1807, 85, pi. 54.— Bp., Svn. 1828, 70.— NuTT., 

 Man- i, 1832, 302.— Aud., Orn. Biog. ii, 1834, 119; v, 1839, 428; pi. 119; Svn. 

 1839, 1(^0 ; B. Am. iv, 1842, 141, pi. 238.— Gm., B. L. I. 1844, 159.— Cass., Pr. 

 Philn-. Acad. 1851, 149. — Woodil, Sitgr. Rep. 1853, 82 (Texas and Indian Terri- 

 ton')-— SCL., P. Z. S. 1857. 227 (Vera Cruz) ; 1860, 2.57 (Orizaba).— Scl. »& S.vlv., 

 Ibis, 1859, 12 (Guatemala).— Cab., J. f, O. iii, 468 (Cuba) ; 1860, 405 (Costa 

 Rica).— GuNDL., J. f. O. 1861, 324 (Cul)a).— Bd., B. N. A. 1858, 341.— Hamlin, 

 Rep. Maine Board Agric. 1865 (Waterville ; only Maine record). — McIlwi{., Pr. 

 Ess. Inst. V, 1866, 87 (Hamilton, C. W., in summer).— Trippe, Pr. Ess. Inst, vi, 

 1871 117 (? Minnesota). — Snow, B. Kans. 1873, 5 (breeding). — Coues, Key, 

 1872, 121, fig. 65. 



Lanivireo flarifrons., Bd. — Lawr., Ann. Lye. ix, 1868, 96 (Costa Rica). — Allen, Bull. 

 M. C.'Z. ii, 1871, 279 (wintering in Florida).— B. B. &, 11., N. A. B. i, 1874, 379. 



Vireosylvia JlariJ'rons, Bd., Rev. 1866, 34(5. 



Muscicapa sylvicola, Wils., Am. Orn. i, 1808, 117, pi. 7, f. 3. 



Hab. — Eastern United States aud British provinces, west to Kansas only. Cuba (rare). 

 Mexico and Central America, to Costa Rica and Guatemala. Breeds from Maryland 

 and Virginia northwai'd. Stated to winter in Florida, as it does further south. 



