1634 U.S. NATIONAL MUSEUM BULLETIN 237 rART 3 



vale) and South Carolina (Chester), and south to central Alabama 

 (Birmingham, Montgomery) and northeastern New Mexico (Clayton) . 



Migration. — Early dates of spring arrival are: Illinois — Urbana, 

 March 29; Chicago, March 30. Indiana — Jasper County, April 24. 

 Ohio — Oxford, March 19 (median arrival for central Ohio, April 1). 

 Wisconsin — Sauk Prairie, April 27. Minnesota — Jackson County, 

 April 18. North Dakota — Cass County, April 28. Manitoba — Trees- 

 bank, April 30 (average of 5 years, May 6) ; Whitewater Lake, May 4; 

 Churchill, May 6. Saskatchewan— Indian Head, May 14. Mac- 

 kenzie — Hay River, Great Slave Lake, May 12. Alberta — Beaver- 

 hill Lake, May 15. British Columbia — Tupper Creek, May 27. 

 Alaska — Tolugak Lake, May 27. 



Late dates of spring departure are: Arkansas — Fayetteville, 

 February 28. Illinois — Chicago, May 15; Urbana, May 12. Ohio — 

 central Ohio, median, May 1. Minnesota — Marshall County, May 6. 

 Oklahoma — Cleveland County, April 1. North Dakota — Red River 

 Valley, May 12. Arizona — -White Mountains, April 24. 



Early dates of fall arrival are: Alberta — Beaverhill Lake, August 28. 

 Manitoba — Oak Lake, September 15. Saskatchewan — Lake Atha- 

 baska, August 17; Indian Head, September 11. North Dakota— Red 

 River Valley, October 5. Oklahoma — Tulsa, December 1. Texas — 

 Gainesville, November 19; Tyler, December 6. Minnesota — Kitt- 

 son County, September 15. Alabama — Birmingham, December 5. 



Late dates of fall departure are: British Columbia— Kispiox 

 Valley, August 25. North Dakota — Cass County, October 18. 

 Minnesota — Kittson County, October 13. Ohio — Oxford, November 27. 



Egg dates. — Mackenzie: 28 records, June 9 to July 2; 18 records, 

 June 20 to June 26. 



Manitoba: 5 records, June 2 to July 3. 



Regarding the Frontispiece 



The A.O.U. Check-List Committee has not as yet assessed the 

 validity of the three races of Smith's longspur pictured in the frontis- 

 piece to this volume. Just before going to press we received a copy of 

 a manuscript by Joseph R. Jehl, Jr., entitled "Geographic and Sea- 

 sonal Variation in Smith's Longspur," which he has submitted for 

 publication in the Transactions of the San Diego Society of Natural 

 History. Jehl's study presents strong evidence that no geographical 

 variation exists in this species. The color differences on which Kemsies' 

 (1961) proposed races are based are apparently the result of seasonal 

 feather wear and fading of the breeding plumage. The brightly 

 colored birds that Kemsies named "roweorum" are in relatively 

 fresh, unworn breeding plumage and were collected in May and early 



