98 



and remains until about the 30th, when, its moult being completed, it 

 moves north. Returns in October. 



Family SYLVICOLIDJB. 

 Genus Mniotilta Vicill. 



29. M. varia Vieill. BLACK AND WHITE CREEPER. Not an un- 

 common summer resident. Abundant in the migrations ; April 25th 

 to May 15th, and August 20th to October 10th. 



Genus Protonotaria Bd. 



30. P. citrea Bd. PKOTIIOXOTARY WARBLKR. A rare summer 

 visitant. Two specimens were taken during the summer of 1875, and 

 I have heard of several other instances of its occurrence. All the 

 specimens taken in this vicinity have remarkably dull colored plu- 

 mage. 



Genus Helmitherus Raf. 



31. H. vermivorus Bonap. WORM-EATING WARBLER. Very rare 

 visitant. A single specimen observed May 21st, 1876, at Waukegan. 



Genus Helmintliophaga Caban. 



32. H. chrysoptera Caban. GOLDEN-WINGED WARBLER. Com- 

 paratively rare. It breeds rarely. Migrates May 15th to 25th, and 

 September 1st to 20th. 



33. H. ruficapilla Bd. NASHVILLE WARBLER. A rare summer 

 resident. Very common during migrations; May 10th to 24th, and 

 September 5th to 30th, and perhaps later. 



34. H. celata Bd. ORANGE-CROWNED WARBLER. A common 

 migrant; April 27th to May 20th, and September 15th to October 25th. 

 Frequents bushy hillsides and borders of woods. 



35. H. peregrina Caban. TENNESSEE WARBLER. Nearly equal 

 to the preceding in numbers, but more difficult to procure during the 

 spring migration, owing to its frequenting the tops of the trees and 

 moving quickly from place to place. Like several other species of 

 warblers which frequent the tops of the trees in spring, it is found 

 much lower in fall, when it may be easily obtained. I have found this 

 true of adults and young of the year. Migrates May 15th to 25th, and 

 August 25th to October 10th. 



Genus Parula Bonap. 



36. P. americana Bonap. BLUE-YELLOW-BACKED WARBLER. An 

 abundant migrant from May 8th to 25th, and August 25th to Septem- 

 ber 20th. Breeds rarely. 



