212 



U. S. NATIONAL MUSEUM BULLETIN 216 



(Cambridge, Cohasset, Forest Hills, Holliston, Humarock, Milton, 

 Petersham, Roslindale, and Roxbury); Michigan (Aurelius, Che- 

 boygan Co., Delta Co., Douglas Lake, East Lansing, George Reserve 

 in Livingston Co., Gogebic Co., Gull Lake Biological Station in 

 Kalamazoo Co., Iron Co., Keweenaw Co., Midland Co., Missaukee 

 Co., and Presque Isle Co.); Minnesota (Chisago, Duluth, Fillmore 

 Co., Houston Co., Itasca Park, Olmsted Co., St. Anthony Park, and 

 Wabasha Co.); Mississippi (Oxford); New Hampshire (Franconia, 

 Mount Washington, and Pinkham Notch) ; New Jersey (Moorestown) ; 

 New York (Albany, Bemus Point, Buffalo, Farmingdale, Flatbush, 

 Freeville, Gasport, Greene Co., Hancock, Huguenot, Huntington, 

 Ithaca, Lake Sebago in Bear Mountain State Park, McLean, Milford 

 Center, New Baltimore, Nyack, Orient, Pelham, Poughkeepsie, Sea 

 Cliff, Slaterville, Syracuse, Taughannock Falls, and Tuxedo); North 

 Carolina (Crabtree Meadows in Yancey Co. at 3,600 ft., Raleigh, 

 Southern Pines, and Tryon); North Dakota (Turtle Mts.); Ohio 

 (Cleveland, Columbus, Montgomery Co., and Puritas Springs in 

 Cuyahoga Co.); Ontario (Grimsby and Kearney); Pennsylvania 

 (Clearfield, Harrisburg, Highspire, Ingram, Presque Isle, and Phila- 

 delphia); Quebec (Montreal Island, St. Hilaire, and Stoneham); 

 Rhode Island (Ashaway); Saskatchewan (Waskesiu); South Carolina 

 (Columbia, Greenville, and near Tigerville); Tennessee (Burrville); 

 Vermont (Jacksonville, Laurel Lake near Jacksonville, Plainfield, 

 and Woodstock) ; Virginia (Arlington and Black Pond in Fairfax Co.) ; 

 West Virginia (Bolivar and Cheat Mt. at 2,000 ft. in Randolph Co.); 

 and Wisconsin (Dane Co., Madison, Muskego, and Sawyer Co.). 



Most of the specimens were collected during the summer months 

 but records in late spring and early fall are moderately common. 



Figures 88, 89. — Localities: 88 (left), Perithous mediator pleuralis; 89 (right), 



P. m. neomexicanus. 



