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PROCEEDINGS OF THE NATIONAL MUSEUM 



tonio. Virginia: Great* Falls. . Washington: Chattaroy (Little Spo- 

 kane River). Wisconsin: Boulder Junction (Nanotowish River below 

 Boulder Lake); Trout River. Canada: British Columbia: Kaslo 

 (Lilypad Lake); Lillooet (Seton Lake); Sardis (Cultus Lake), Nova 

 Scotia: Annapolis Royal. Ontario: Biscotasing; Lake Muskoka; 

 Ottawa; Rideau River (Black Rapids). Quebec: Knowlton; Lacolle. 

 The specimens examined were collected from April 9 to October 7. 

 S. vicaria is the most common Nearctic species of Sisyra, although 

 from the region west of the Rock}^ Mountains there are records only 

 from Arizona, Oregon, Washington, and British Columbia. 



Figure 13. — Terminal abdominal segments of Sisyra fuscata (Fabricius). A, male, 

 lateral view; B, male, dorsal view; C, female, lateral view; D, male, hypandrium. 



S. vicaria and S. fuscata have been noted to coexist in the following 

 localities: Augusta, Maine; Douglas Lake and Livingston County 

 (E. S. George Reserve), Mich.; Cass County and Itasca Park, Minn.; 

 Milford Center and Saranac Inn, N. Y.; and Biscotasing, Ontario. 

 S. vicaria and S. apicalis have been taken from Paradise Key (Royal 

 Palm State Park), Fla. 



Specimens recorded as vicaria but which were not examined include 

 those recorded by Carpenter (1940, p. 254) from North Carolina 



