THE CANADIAN ENTOMOLOGIST. 



133 



oenotrus, and, on the whole, I am decidedly of opinion that Mr. Butler 

 has again brought confusion into the difficult group by his synonymy, 

 which is at variance with that given by Dr. Boisduval and myself 



Protoparce Burm. 



As having priority ovtx Macivsila Walk., Mr. Butler refers our species 

 to this genus of Burmeister's. Boisduval claims the term Macrosila for 

 tetrio, but for this species Pseudosphinx has priority. 



LIST OF CANADIAN DIPTERA. 



BY WM. COUPER, MONTREAL, P. Q. 



The following list of Canadian Diptera has been compiled from British 

 Museum catalogues for 1848 and '49. The greater number of the species 

 were described by the late Francis Walker. Those from Hudson's Bay 

 were collected by Geo. Barnston, Esq., of Montreal, when residing at 

 St. Martin's Falls, Albany River. The material from Nova Scotia was 

 presented by Lieut. Redman to the British Museum. I have not included 

 the species collected by Mr. Doubleday in the United States, nor those 

 recorded as coming from North America. A few species from Newfound- 

 land and New York Factory are also omitted. 



FaM. I. TlPULARI^. 



Sec. I. Cnlicifonnes. 



Culex stimulans, Nova Scotia. 



impatiens, Hudson's Bay. 



punctor " 



impiger " 



implacabilis " 



provocans, Nova Scotia. 

 Chironomus bimacula, Hudson's B. 



*' confinis '* 



Chironomus nigritibia, Hudson's B. 

 albistria " 



crassicoUis " 

 unicolor, Nova Scotia, 

 lasiomerus, Huds'n'sB. 

 festivus " 



lasiopus " 



altenuatus " 



flavicingula " 

 fimbriatus " 



trictiomerus " -^ 



