316 MICHIGAN SURVEY, 1908. 



Family Scioinyziclae. 



49. Tetanocera pleheia Loew. A specimen taken July 26 at Light- 

 house clearing (I, 7). Type locality Middle States. Specimens are at 

 hand from British Columbia and other localities. The members of this 

 genus are often common in marshy and damp places. 



50. Sepedon fusiUiis Loew. Two specimens taken in a swamp in Cass- 

 andra and Sedge Zone (V, 2), by Max M. Peet. Type locality Middle 

 States. Known from Ohio, New Jersey and White Mountains, New 

 Hampshire. The various species of this genus are usually found in 

 swamps where they may be observed flying over water. 



