32 ENTOMOLOGICAL NEWS. [Jan., '03 



tinct in the larval stage, cannot be distinguished from Culex 

 sylvestris in the imago. Pools of water left by a high tide on 

 the meadows on Sept. 4, were alive with larvae on the 5th and 

 6th, showing that the eggs must have been deposited in dry 

 spots previous to submergence. C. sollicitans always oviposits 

 in dry places, the greater portion of eggs never reaching the 

 adult stage. 



Mr. Daecke exhibited a species of Lachnus which feeds on 

 Platanus ocddentalis, and had been found commonly in Phila- 

 delphia on September- 1 8th, but on the iQth it had entirely dis- 

 appeared. 



WILLIAM J. Fox, Secretary. 



The Chicago Entomological Society held a regular meeting 

 Nov. 2oth, 1902, in the John Crerar Library. Twelve mem- 

 bers present. Visitor, M. E. Hoag. President Longley in the 

 chair. 



Mr. Melander and Dr. Williston were elected members. 



The question of affiliation with the Chicago Academy of Sci- 

 ences was brought up and discussed. It was agreed that no 

 official action should be taken until more members were heard 

 from. 



The program for the evening was a talk by W. L,. Tower, on 

 the habitat of the genus Leptinctarsa Stahl, and the migra- 

 tions of the Colorado potato beetle, L. lo-lincata. With the 

 aid of a map he clearly and interestingly illustrated the spread 

 of this beetle from its original habitat in the foothills along the 

 eastern side of the Rocky Mountains to its fairly general dis- 

 tribution throughout the eastern half of the United States and 

 Canada, except in the Gulf and South Atlantic States. Work- 

 ing its way eastward on its native food plant, Solanum rostra- 

 turn it met, about 1859, the western spread of population, and 

 with the Irish potato, Solanum tuberosum, in western Kansas. 

 From that date it rapidly worked its way eastward, spreading 

 as it advanced, northward into Canada and southward into 

 the upper tier of Southern States, until in 1874 it had reached 

 the Atlantic seaboard. Adjourned 9.55 P. M. 



JOHN COMSTOCK, Secretary. 



