STATE OF ILLINOIS 



DEPARTMENT OF REGISTRATION AND EDUCATION 

 FRANCIS W. SHEPARDSON, DIRECTOR 



DIVISION OF THE 

 NATURAL HISTORY SURVEY 



THE FISHES OF ILLINOIS 



STEPHEN ALFRED FORBES, PH.D., LL.D. 



AND 



ROBERT EARL RICHARDSON, A.M. 



SECOND EDITION, 1920 



PUBLISHED BY 



AUTHORITY OF THE STATE OP ILLINOIS 



