432 U. S. NATIONAL MUSEUM BULLETIN 216 



yellow band paralleling the apical margin, the band interrupted on 

 the midline on all except the seventh tergite. The yellow markings 

 on all of the abdominal tergites are margined with darker brown or 

 fuscous so that they contrast sharply with the ground color; wings 

 hyaline or lightly suffused with brown, with brown markings approxi- 

 mately as in figure 319,e, there always being at least a little brown 

 along the basal vein. 



This subspecies intergrades freely along the southern edge of its 

 range with the subspecies macrurus. It is a weak subspecies whose 

 distinguishing character, the less extensive brown coloration of the 

 wings, is in the nature of a geographic cline, and whether it is worth 

 distinguishing is a matter of opinion. 



Specimens (390 cf, 4109): From Alabama (Coosa River in Chilton 

 Co. and Tuskega Army Airfield in Macon Co.); Colorado (Boulder, 

 Brighton, Colorado Springs, Denver, and Fort Collins); Connecticut 

 (New Haven, South Meriden, and Westport); District of Columbia 

 (Georgetown and Rock Creek Park); Georgia (Atlanta and Black 

 Rock Mt. in Rabun Co. at 3,500 ft.); Illinois (Chicago, Danville, 

 Jacksonville, Moline, and Rock Island) ; Indiana (Elkhert, Hanover, 

 and Monroe-Morgan State Forest in Morgan Co.) ; Iowa (Ames, Iowa 

 City, and Ruthven); Kansas (Cherokee Co., "Colbert," Emporia, 

 Garden City, Lawrence, Manhattan, Onaga, Topeka, and Wichita); 

 Louisiana (Bayou Nezpique in Acadia Parish); Maine (Bangor and 

 Bar Harbor); Maryland (Baltimore Co., Bowie, Glen Echo, Plummers 

 Island, and Takoma Park) ; Massachusetts (Boston, Cambridge, Forest 

 Hills, Holliston, Lexington, and Reading); Michigan (Ann Arbor, 

 Antrim Co., Aurelius, Base Lake in Wastenaw Co., Benton Harbor, 

 Branch Co., Calhoun Co., Coloma, Detroit, Douglas Lake in Cheboy- 

 gan Co., East Lansing, Flint, George Reserve in Livingston Co., 

 Gladwin Co., Lake Charlevoix, Lake City, Lansing, Leelanau Co., 

 Manchester, Midland Co., Milford, Onota Township in Alger Co., 

 Owosso, Paw Paw Lake, Saginaw Co., Scio Township in Washtenaw 

 Co., Shelby, Van Auken Lake in Van Buren Co., Warren Woods in 

 Berrien Co., Whitefish Point in Chippewa Co., and Wyandotte); 

 Minnesota (Belle Plaine, Blue Earth, Camp Carlos near Alexandria, 

 Chisago Co., Clarkfield, Kaplan Woods State Park near Owatonna, 

 Lake City, Le Sueur Co., Mille Lacs Co., Minneapolis, Mississippi 

 bluffs 1-2 miles n. state line in Houston Co., Olmsted Co., Preston, 

 St. Anthony Park, St. James, St. Paul, Savage, Spring Grove, Staples, 

 Winnebago Creek Valley near Eitzen, Winona, and Woodstock); 

 Missouri (Barry Co. and Overland); Nebraska (Cambridge); New 

 Hampshire (Mount Monadnock, Mount Madison, Mount Washing- 

 ton, and Penacook); New Jersey (Allaire State Park in Monmouth 

 Co., Bergen Co., Boonton, Fort Lee, Greenwood Lake in Passaic Co., 



