536 



Summary of Illinois Genera and Species in Comparison 

 with those recorded for other states 



The following list gives a numerical summary of the genera and 

 species of Chironomidce that have been taken in Illinois. As the list 

 is very largely the result of collecting by Mr. Hart and the writer 

 during 19 14, practically all the included species having been taken on 

 occasional collecting trips during that year, and as much of the area 

 within the state has not been visited, the number of species here 

 listed is in no respect complete, even for the localities to which peri- 

 odical visits were made. 



Number of Illinois Species recorded 



The above list, comprising, as it does, 27 genera and 178 species, 

 is the largest state list yet published for the family. Smith's "Insects 

 of New Jersey," 1909, gives 82 species distributed over 22 genera, 

 according to the arrangement of the present paper, as in the following 

 table. 



