154 THE CHICAGO ACADEMY OF SCIENCES. 



September. On June 9, 1885, Mr. B. T. Gault found a nest 

 of this species, which contained four eggs, in Lake County, Illi- 

 nois, a few miles north of our area. 



The range of the Warbling Vireo covers North America in 

 general, from the Fur Countries southward into Mexico and it 

 breeds quite throughout its range. 



Genus LANIVIREO Baird, 1858. 



Lanivireo flavifrons (Vieillot). Yellow-throated Vireo. 



Vireo flavifrons VIEILLOT, Ois. Amer. Sept., I, 1807, 85, pi. 54. 

 Popular synonym: YELLOW-THROATED GREENLET. 



This Vireo is a not uncommon migrant, and is probably a 

 rare summer resident. In the spring it arrives about the last 

 of April, and in the fall it arrives in September and departs from 

 the last of that month to the middle of October. On the eighth 

 of June, 1885, Mr. B. T. Gault obtained a nest and the eggs of 

 this species in Lake County, Illinois, a few miles north of our 

 area. 



The range of this Vireo covers the United States east of the 

 Great Plains, and from Canada southward. It breeds from the 

 Gulf of Mexico northward, and it winters in Florida and south- 

 ward through Mexico to Colombia. 



Lanivireo soltarius (Wilson). Blue-headed Vireo. 



Muscicapa solitaria WILSON, Amer. On., II, 1810, 43, pi. 17, fig. 6. 

 Vireo solitarius VIEILLOT, Nouv. Diet. d'Hist. Nat., XXXVI, 1819, 



103. 



Popular synonyms: SOLITARY GREENLET OR VIREO. BLUE-HEADED 

 GREENLET. 



The Blue-headed Vireo was formerly a common but now it 

 is a rather rare migrant. In the spring it arrives from the first to 

 the last of May, and it returns in the fall from the middle of Sep- 

 tember to the first week in October. Mr. B. T. Gault informs me 

 that it is silent while passing through our area during its migra- 

 tions, and that it occurs more plentifully during its fall migra- 

 tions. 



Its range covers North America east of the Plains and from 

 the Fur Countries southward. It breeds from the northern bor- 

 der of the United States northward, and it winters in the West 

 Indies and eastern Mexico south to Guatemala. 



Genus VIREO Vieillot, 1807. 



Vireo noveboracensis (Gmelin). White-eyed Vireo. 



Muscicapa noveboracensis GMELIN, S. N., I, ii, 1788, 947. 



