524 BULLETIN 2 03, UNITED STATES NATIONAL MUSEUM 



sachusetts — Boston, October 29. Kliode Island — Green Hill, October 

 5. Connecticut — New Haven, October 13. New York — Idlewild, 

 Long Island, November 6; East Hampton, Long Island, November 

 26. New Jersey — Union County, October 18 (average of 9 years, 

 October 1). Pennsylvania — Jeffersonville, October 16. Maryland — 

 Patuxent Wildlife Research Refuge, October 29 ; College Park, No- 

 vember 7. District of Columbia — Washington, October 22 (average 

 of 13 years, October 12). West Virginia — Bluefield, October 1. Vir- 

 ginia — Rosslyn, October 24. North Carolina — Raleigh, October 24. 

 Florida — Sombrero Key, October 9. 



Early dates of fall arrival are : North Dakota — Cass County, August 

 16. Texas — Commerce, August 28. Minnesota — Hutchinson and 

 Frontenac, August 29. Wisconsin — New London, August 24. Iowa — 

 Marshalltown, August 22. Ontario — King, August 21. Michigan — 

 Sault Ste. Marie, August 19. Ohio — Waverly, August 10; central 

 Ohio, August 27 (average, September 8). Indiana — Lake County, 

 August 31. Illinois — Glen Ellyn, August 14. Quebec — Hudson, 

 August 18. Maine — Cape Elizabeth, August 30. New Hampshire — 

 Randolph, August 18. Vermont — St. Johnsbury and Wells River, 

 August 21. Massachusetts — Belmont and Martha's Vineyard, August 

 19. Connecticut — East Hartford and Litchfield, September 1. New 

 York — Frost Valley in southern Catskills, August 16; Alley Pond, 

 Long Island, August 17. New Jersey — Passaic, August 24. Dela- 

 ware — Delaware City, September 3. Maryland — Patuxent Wildlife 

 Research Refuge, September 9. District of Columbia — ^Washington, 

 August 28 (average of 21 years, September 21). West Virginia— 

 Bluefield, September 10. Virginia — Rockbridge County, August 31. 

 North Carolina — Raleigh, September 28. Florida — St. Marks, Sep- 

 tember 21. Bahamas — Nassau, October 12. Costa Rica — San Jose, 

 October 6. Colombia — Bonda, Santa Marta region, October 22. 

 Venezuela — La Trilla, October 23. Brazil — Allianga, Rio Madeira, 

 November 16. 



Egg dates. — Alberta : 8 records, June 15 to 25. 



Manitoba : 2 records, June 12 to 21. 



Minnesota : 2 records, June 12 and 13 (Harris). 



OPORORNIS PHILADELPHIA (Wilson) 



MOURNING WARBLER 



Plate 64 



HABITS 



Alexander Wilson (1832) discovered this warbler "on the border of 

 a marsh, within a few miles of Philadelphia," hence the scientific name 

 Philadelphia ; he called it the mourning warbler on account of the black 



