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CHILOSIA Meig. 



C. comosa Loew. St. Johns Co. VI (Be). 



C. cyanescens Loew. Montreal VI (C). 



C. occidentalis VVillst. Sherbrooke (I'abbe Begin). 



C. pallipes Loew. Montreal VI (C); Gatineau VII (Be). 



BACCHA Fabr. 



B. cognata Loew. Montreal VII (C). 



B. fascipennis Wied. Montreal VI (Be); Hull (H). 



PYROPHAENA Schiner 

 P. granditarsus Forst ( =ocymi Fabr). Montreal VIII (C); Hull (Letourneau). 



PLATYCHIRUS St. Farg. and Serv. 



P. chaetopodus Willst. Sherbrooke (C); Montreal (Be). 



P. hyperboreus Staeger. Montreal V-X (C). 



P. peltatus Meig. Sherbrooke V-VI (C); Montreal VI (Be); Rigaud (C). 



P. quadratus Say. Montmorency VII (Fy); St. Johns IX (C); Montreal IX (C); Gatineau 

 VII (Be). 



MELANOSTOMA Schiner 



M. coerulesceus Willst. Sherbrooke V (I'abbe Begin). 



M. mellinum Linn. St. Johns IX (C); Montreal IX (C). 



M. obscurum Say. Montreal V (C); Rigaud V and VIII (C). 



BRACHYOPA Meig. 

 B. media Will. Rouville Co. V (C). 



SYRPHUS Fabr. 



S. abbreviatus Zett. Montreal VIII -IX (C). 



S. amalopsis O. S. Sherbrooke V-VI (C). 



S. americanus Wied. Montmorency (Fy); St. Johns VI-VII (C); Montreal VI-VIT (C). 



S. arcuatus Fall. Montmorency VII (Fy); St. Johns VIII-IX (C). 



