150 



FamiSy BORBORIDAE. 



These are small, yellowish or brownish flies, found flj'ing in swarms over sewage and 

 other decomposing matter in which their larvae feed. 



LEPTOCERA Oliv. 



L. crassimana Hal. Montreal VII (Be). 

 L. fontinaiis Fallen. Montreal VII (Be). 

 L. limosa Meig. Montreal (C). 



BORBORUS Meig. 



B. arcticus Malloch. Ft. Chimo, Ungava Bay (L. M. Turner). 



B. equinus Fall. Montreal V-VIII (Be). 



B. geniculatus Macq. Montreal VI-VIII (Be). 



SPHAEROCERA Latr. 

 S. subsultans Fabr. Montreal VII (C); St. Johns Co. IX (C); Chambly Co. IX (Be). 



Family SCIOMYZIDAE 



The flies of this family have long, narrow bodies and long legs. The wings are also 

 long, longer than the body and are often ornamental. They are frequently found along the 

 banks of streams in which the larvae live. 



SCIOMYZA Fallen. 



S. nana Fallen. Montreal VI-VII (C); Rigaud VII (C). 



S. humiiis Loew. Montreal VII (Be). 



S. obtusa Fallen. Montreal VII-VIII (Be). 



S. schonherri Fallen. Montreal VI-VIII (Be). 



DRYOMYZA Fallen. 



D. aristalls Coq. Laval Co. (Be). 

 D. varia Coq. Rigaud V (Be). 



NEUROCTENA Rond. 

 N. anills Fallen. Montreal VI (C); St. Johns IX (C). 



