488 BULLETIN 203, UNITED STATES NATIONAL MUSEUM 



Memphis, April 19. Kentucky — Bowling Green, April 27. Mis- 

 souri — St. Charles, April 21. Illinois — Chicago region, April 7 (aver- 

 age, April 20) . Indiana — Richmond, April 25. Ohio — Oberlin, April 

 16; central Ohio, April 15 (average, April 28). Michigan — Ann 

 Arbor and Detroit, April 27. Ontario — London, April 23 ; Ottawa, 

 May 8. Iowa — Ames and Hudson, April 30. Wisconsin — Sheboygan, 

 April 25; Madison, April 26. Minnesota — Minneapolis, April 22 

 (average of 32 years for southern Minnesota, May 3) . Texas — Atas- 

 cosa County, March 28. Kansas — ^Lake Quivira, April 25. Ne- 

 braska — Omaha, April 24. South Dakota — Sioux Falls, April 30. 

 North Dakota — Argusville, April 30 (average. May 16). Manitoba — 

 Aweme, May 4 (average. May 14) . Saskatchewan — Indian Head and 

 Lake Johnston, May 11. Mackenzie — Fort Simpson, May 14; Mac- 

 kenzie Delta, May 31. New Mexico — Silver City, May 6. Arizona — 

 Tucson, April 26. Colorado — Denver, May 12. Utah — Uinta Basin, 

 May 8. Wyoming — Lake Como and Torrington, May 10. Idaho — 

 Pocatello, May 13. Montana — Fortine, May 12. Alberta — Glenevis, 

 May 12. California — Altadena, May 15 (only spring record). 

 British Columbia — Okanagan Landing, May 2 ; Nulki Lake, May 26. 

 Yukon — Forty Mile, May 20. Alaska — head of North Fork of Kus- 

 kokwim River, May 16 ; Bethel, May 27. 



Late dates of fall departure are : Alaska — Nunivak Island, August 

 22 ; St. Michael, August 25. Yukon — Dawson, August 29 ; Macmillan 

 Pass, September 4. British Columbia — Mushwa, September 8 ; Arrow 

 Lakes, September 24. Washington — Prescott, September 11. Califor- 

 nia — Rodeo Lagoon, Marin County, October 18. Alberta — Glenevis, 

 September 1. Montana — Fort Keogh, September 12. Wyoming — 

 Laramie, September 13. Utah — Zion National Park, September 22. 

 Colorado — Clear Creek, September 3. Arizona — Phoenix, September 

 16. New Mexico — Glenrio, October 21. Mackenzie — Mackenzie Delta 

 August 15; MacTavish Bay, August 22. Saskatchewan — ^Redberry, 

 September 1. Manitoba — Treesbank, October 13. North Dakota — 

 Lower Souris Refuge, Upham, October 4; Cass County, September 

 23 (average, September 18). South Dakota — Faulkton, September 

 30. Nebraska — Minden, October 19. Texas — Anahuac, October 18; 

 Glenrio, Deaf Smith County, October 21. Minnesota — Minneapolis, 

 October 15 (average of 17 years for southern Minnesota, September 

 24). Wisconsin — Madison, October 19. Iowa — National, October 15. 

 Ontario — Ottawa, September 17 ; Sundridge, October 18. Michigan — 

 Sault Ste. Marie, October 13. Ohio — Ashtabula County, October 18; 

 Buckeye Lake, October 13 (average, October 1). Indiana — Lake and 

 Porter Counties, October 12. Illinois — Chicago region, October 21. 

 Missouri — St. Louis, October 17. Kentucky — Bowling Green, Octo- 

 ber 8. Tennessee — Memphis, October 6. Louisiana — Baton Rouge 



