Bulletin 



OP THE 



Illinois State Laboratory 



Natural History 



Urbana, Illinois, U. S. A. 



STEPHEN A. FORBES, Ph.D., EL,.D. 

 Director 



Vol. X. September, 1913 Article II. 



THE CYRUS THOMAS COLLECTION OP APHIDIDAE, AND 



A TABULATION OF SPECIES MENTIONED AND 



DESCRIBED IN HIS PUBLICATIONS 



By 

 John J. Davls, B. S. 



