Vol. XXl] ENTOMOLOGICAL NEWS. 297 



adults, apparently referable to the above species, were taken 

 near the same place (May 30, and July 4, 1909), and at Hess- 

 ville, Ind. (July 12, 1908). 



Aedes fuscus O. S. 



Females of the above mosquito were taken in woodland at 

 Glen Ellyn, 111., on May 30, 1908. 



Aedes lutzii Theob. 



Several aggressive females were collected in woodland at 

 Willow Springs, 111. (June 14, and July 14, 1908), and at Hess- 

 ville, Ind. (July 12, 1908). 



Aedes pretans Grossb. 



One female taken at Glen Ellyn, 111. (May 30, 1908), and 

 two at Willow Springs, 111. (June 14, 1908), are the only speci- 

 mens that can be recorded for this region. 



Aedes subcantans Felt. 



As there appear to be no available characters, excepting 

 those found on the larvae, whereby this species may be 

 readily separated from several closely allied forms, no rec- 

 ords are given of those adults which were taken in the vicin- 

 ity of Chicago, although they apparently represent the above 

 mosquito. 



The larvae were collected at two, not widely separated places 

 on the south side of the city during the fore part of three con- 

 secutive years. They were found in stagnant water in wood- 

 land ditches, which were dry during the greater part of the 

 summer, near Eighty-second Street and Stony Id. Avenue 

 (April 29, 1906; April 28, 1907; April 19, 1908), and in a 

 roadside ditch in a semi-woodland tract near Seventy-ninth 

 Street and East Avenue (May 6, 1906; April 28, 1907; April 

 19, 1908). 



Aedes sylvestris Theob. 



This is the most common mosquito found in the vicinity of 

 Chicago, and, inasmuch as it flies several miles from its 

 breeding place, thus entering the built-up sections of the city 

 for a considerable distance, it likewise ranks as the most an- 



