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 CHRYSOPILUS Macq. 



C. flavida Bigot. Montreal (C). 



C. propinqua Walk. Mt. St. Hilaire VI (C); Montreal VI (C).Rigaud VI (C). 



C. proxima Walk. Montreal (C). 



C. quadrata Say. Levis (Fy); Rigaud VII (C); Montreal VI (Be). 



COENOMYIA Latr. 



C. ferruginea Fabr. Chambly Co. (Be).; Montreal (C). 



ATHERIX Meig. 

 A. variegata Walk. Montreal (C). 



DIALYSIS Walk. 



D. elongata Say. Montreal (C). 



XYLOPHAGUS Meig. 



X. fasclatus Walk. Montreal (C). 

 X. rufipes Loew. Montreal (C). 



Family CYRTIDAE. 



The "Small-headed flies" have a large humped thorax and inflated body, but with the 

 head very small in proportion. The larvae are parasitic some species having been foimd 

 living on spiders, the young larvae being within the abdomen. 



PTERODONTIA Gray. 



P. flavipes Gray. Gomin swamp near Quebec (Fy); He Grosbois VII (St); Rigaud (C). 



ONCODES Latr. 

 O. costatus Loew. Montreal (C). 

 O. pallidipennis Loew. St. Johns Co. (C). 



OPSEBIUS Costa. 

 O. pterodontinus 0. S. Montreal (C). 



ACROCERA Meig. 

 A. bimaculata Loew. Levis Col. (Roy). 



