126 

 THEREVA Latr. 



T. candidata Loew. Montreal (Cd). 



T. frontalis Say. Montreal (C). 



T. senex Walk. Montreal (Cd.) 



T. ustulata Krober. Laval Co. Type locality. 



Family SCENOPINIDAE. 



The "Window-flies" are small blue flies with yellowish legs. The larvae are i>.'n.-i cif.! 

 as they feed on "moths" and other carpet pests. 



SCENOPINUS Latr. 

 S. fcnestralis Linn. Montreal (Cd). 



Family ASILIDAE 



The "Robber-flies" have a habit of seizing other insects in the air and sucking the juices 

 from their bodies. They are mostly grey or brown mottled with black but a few are brightly 

 coloured. The wings are long and narrow; the body long, robust and covered with hair, and 

 the legs long and powerful, the tips provided with stout claws. The larvae live in decaying 

 wood and are carnivorous so far as known. 



LEPTOGASTER Meig. 



L. annulatus Say. Quebec (Fy). 



L. badius Loew. Montreal VII (Be); St. Johns Co. VI (C). 



L. faviilaceus Loew. Rigaud VI (Be). 



L. flavipes Loew. Rigaud (C); Montreal (C). 



L. testaceus Loew. Montreal (C). 



CYRTOPOGON Loew. 



C. falto Walk. Montreal VI (C); Rigaud V (C). 

 C. bimicula Walk. Levis Co. VI (Roy). 

 C. marginalis Loew. Levis Co. VII (Roy). 



