The Mosquitoes collected by the Canadian Arctic Expedition, 



1913-18. 



(Diptera, Culieichp.) 

 By Harrison G. Dyar. 



Introduction. 



Many stories are current about the extraordinary abundance of mosquitoes 

 in the Arctic regions, rivalling the tropics in this respect. Thai these stories 

 are not overdrawn, is shown by the accompanying photographs, taken in the 

 deltas of the Colville and Slave rivers by Dr. R. M. Anderson of the < lanadian 

 Arctic Expedition. Nevertheless, the number of species present is small in the 

 northern regions, though individuals may be abundant. Along the Arctic coasl 

 of the Northwest Territories, here considered, but two species arc identified, 

 whereas a collection of an equal number of specimens in the tropic- mighl 

 include thirty or forty species. 



Head net, as used in the North for pro- 

 tection against mosquitoes. Delta 

 of Slave River, Great Slave lake, 

 N.W.T., June, 1908. 



Mosquitoes "ti back of man's hooded coat. 

 Near Nigalik, delta of * !olville rivi 

 Arctic coast "t' Alaska. Julj 

 L909. 



The collection before me was made during the years 1913, 191 I. 1915, and 

 1916; but it is disappointingly a small one I 134 specimens . and the material i- 

 in very poor condition. The region, however, is interesting, embracing the 

 Arctic ^coast of Alaska and the Canadian Northwesl Territories. 



