OF WASHINGTON. 37 



tomologists who were visited. Rev. G. W. Taylor, especially, 

 gave valuable material, not sparing species that were uniques in 

 his collection. 



The paper was illustrated by maps and photographs. 

 Dr. Dyar then read the following paper : 



NOTES ON THE MOSQUITOES OF BRITISH COLUMBIA. 

 By HARRISON G. DYAR. 



In conjunction with some other work, I made observations on 

 the mosquitoes of British Columbia, Canada, particularly in th.e 

 Kootenay District, during the past season. This was done in 

 connection with the mosquito work which is being promoted by 

 Dr. Howard, with the help of the Carnegie Institution. 



British Columbia is a mountainous region in general, with a 

 fairly abundant rainfall. Nevertheless, towards the middle of 

 summer it becomes generally dry and most natural breeding 

 places for mosquitoes disappear. The mosquitoes, therefore, 

 come early and are soon gone, and are, in the main, composed 

 of those species which develop rapidly and hibernate in the egg 

 state. Culex pipiens was not seen anywhere in British Colum 

 bia, nor was any species of Anopheles met with except in a 

 single instance. The place of C. pipiens in rain barrels and 

 other stagnant water is taken by C. incidens. 



I will mention the species in the order of their comparative 

 abundance. I desire to express my thanks to Mr. Caudell and 

 Mr. Currie for the kind assistance which they rendered me. I 

 am indebted to Mr. Coquillett for patiently examining my 1,238 

 specimens. 



Culex impiger Walker.* 



This was by far the commonest mosquito. Early pools in the 

 mountains, rilled by the drainage from the melting snow banks, 

 contained the larvae and pupae, apparently by the million. Near 

 Kootenay Lake they had all gone in May ; but higher in the hills 

 larvae could still be found till the middle of June, and at Kokanee 

 Mountain, at the foot of the glacier, I found many larvae on Au 

 gust 10. The adults soon became very common in the woods, 

 though in a few weeks they were much worn and later disap- 



* This is the C. reptans of my previous papers. Mr. Coquillett will 

 give the differentiation of impiger and reptans in the new edition of Dr. 

 Howard's " Mosquitoes." 



