THE COMMON MOSQUITO 79 



gens. He concludes tliat Culex sollicitans appears in 

 the perfect state tliroug-hout South Jersey, being found 

 from May to October, but is not always common. Mr. 

 La Eue Holmes, of Summit, N. J., has several times 

 sent me specimens of sollicitans taken at Summit, which 

 is about twelve or fifteen miles from the nearest salt 

 marsh. I am inclined to think that although this species 

 may be found widespread through the summer in various 

 parts of New Jersey, this abundance is due to its car- 

 nage in numbers from the sea-coast by railway trains, 

 and even if it does breed for a generation or two in 

 fresh water, the supply is constantly renewed from the 

 sea-shore. 



Oulex impiger is another of the more northern mos- 

 quitoes, having been collected by Mr. Trevor Kincaid on 

 the Harriman Alaskan Expedition, and having been given 

 me by Dr. Walter Evans, of the United States Department 

 of Agriculture, who has investigated the agricultural re- 

 sources of Alaska. Mr. F. C. Pratt has found it breeding 

 in privy vaults in Alexandria, Va., and this species is 

 likely to be the one found usually in such places, where 

 the water is fouled with decomposing or excreted animal 

 matter. 



The distribution of our commoner species of Culex, so 

 far as known to the writer, is as follows : 



Culex coj^sobrinus Desv. 



Habitat : White Mountains, N.H. ; Beverley, Mass., Septem- 

 ber 38 (Nat. Mus.) ; Catskill Mountains, Greene County, 

 N.Y., 2,500 feet (Howard); Hlinois, March 21, April 21), 

 May 6, October 16 (Nason); St. Anthony Park, Minn. , April, 



