30 INSECUTOR INSClTL^i MENSTRUUS 



Two hundred and seventy-two specimens came to hand, as 

 follows: White River, Ontario, June 18-23, 1918; Dryden, 

 Ontario, June 29-July 2, 1918 ; Kenora, Ontario, July 2, 1918 ; 

 Winnipeg Beach, Manitoba, July 4-5, 1918; Saskatoon, Sas- 

 katchewan, August 12, 1918 ; Prince Albert, Saskatchewan, 

 August 14-17, 1918; Red Deer. Alberta, July 29- August 2, 

 1918; Lochearn, Alberta, August 5, 1918; Lamoral. Alberta, 

 August G, 1918; Calgary, Alberta, July 28, 1918; Lake Minne- 

 wanka. Alberta, July 22, 1918 ; Banff, Alberta, July 7-27, 1918. 



Culicella dyari Coquillett. 



Cule.r dyari Coquillett, Journ. N. Y. Ent. Soc, x, 192, 1902. 

 Culcx brittoni Felt, Ent. News, xvi, 79, 1905. 



This species is fairly closely confined to the Canadian re- 

 gion, extending not far beyond it. Larvae were found at White 

 River in the mossy pools with the black-legged Aedes. 



Three adults were taken : White River, Ontario, June 20, 

 1918; Red Deer, Alberta, July 80, 1918. 



The males of this species are strongly attracted to light. A 

 collection of mosquitoes was made at arc lights in Wilmington, 

 Massachusetts, in July, 1910, by Mr. H. S. Barber, with the 

 following result : 



CuHcella dyari Coq., 107 males, 2 females. 



Aedes canadensis Theob., 4 males, 15 females. 



Aedes aurifcr Coq., 1 male, 13 females. 



Aedes vcxans Meig., 3 males, 8 females. 



Aedes excrucians Walk., 1 male, 4 females. 



Aedes cinerens Meig., 2 males, 2 females. 



Culex saxatilis Grossb., (i males. 



Culex sp. (restuans or pipiens)^ 2 females. 



Mansonia pcrturbans Walk., 1 male. 



That over 60 per cent of these captures at light (or 80 per 

 cent counting males alone) consisted of dyari, a species usually 

 so rare as to be seldom taken, shows that the light must exer- 

 cise a peculiar attraction for the species. Mosquitoes are not 

 generally attracted to light in numbers, but of those that do 

 come the males are in larsre excess of the females. This does 



