FIFTEENTH REPORT 



OF THE 



STATE ENTOMOLOGIST 



ON THE 



NOXIOUS AND BENEFICIAL INSECTS 



OF THE 



STATE OF ILLINOIS. 



FOURTH REPORT OF S. A, FORBES, 



For THE Years 1885 and 1886. 



SPRINGFIELD, ILL.: 



SpRINGFIBLI) PlilNTlNO CO., STATE PRINTERS. 



1889. 



