INSECUTOR INSCITI^ MENSTRUUS 31 



not appear in the above table, for, exclusive of dyari, there are 

 44 females to 18 males. I suppose this to be due to the fact that 

 the collector could not distinguish between those females at- 

 tracted to light and those that came with designs upon his per- 

 son. That this is the correct explanation of the large number 

 of females taken, I think is shown by a consideration of the 

 Culex. The saxatilis, which biles frogs, was present only in 

 males, whereas the rcstitaiis or pipiens, which will attack man, 

 was represented by females. Moreover, I have a collection of 

 mosquitoes taken at trap light in Lafayette. Indiana, by Mr. 

 J. J. Davis, July, 1916, consisting almost wholly of Aedes 

 vexans, and in this the males largely outnumber the females. 

 The captures being made in a trap light excludes the element 

 of attraction of the females for purposes of feeding. 



Culex restuans Theobald. 



Ciilex territans Walker, Ins. Saund., Dipt, i, 428, 185fi (nomcn 



non conservandum). 

 Culex restuans Theobald, Mon. Culic, ii, 142, 1901. 

 Culex brehmei Knab, Proc. Biol. See. Wash., xxtx, 161, 191 fi. 



Found rarely in the forested region in the east. The larvae 

 inhabit open pools with Acdes canadensis. This species ranges 

 well to the south along the Atlantic seaboard. 



Seven specimens were taken : White River, Ontario, June 

 16-July 4. 1918. Mr. Knab found third stage larvre on June 

 24. 1907. also at White River. 



Anopheles occidentalis Dyar & Knab. 



Anopheles occidentalis Dyar & Knab, Proc. Biol. Soc. Wash., 

 xix, 159, 1906. 



Widely distributed in the western United States, following 

 the Canadian forests eastward. The species is rare in the 

 north ; only two specimens were taken : Kenora, Ontario, 

 July 2, 1918. 



Mansonia perturbans Walker. 



Culex perturbans Walker, Ins. Saund., Dipt., 428, 1856. 

 Culex ochropus Dyar & Knab, Journ. N. Y. Ent. Soc, xv, 100, 

 1907. 



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