'E 



THE LIFE HISTORY 



OF THE SLOUGH DARTER, 



ETHEOSTOMA GRACILE 



(PISCES, PERCIDAE) 



Marvin E. Braasch 

 Philip W. Smith 



<? A. -A. 





\.o, 



-i-,™,^^ 



'mm, 



" , r "^^ *— 



^ ^ -c 





state of Illinois 



Department of Registration and Education 



NATURAL HISTORY SURVEY DIVISION 



ILLINOIS NATURAL 

 HISTORY SURVEY 

 Biological Notes No. 58 



Urbana, Illinois • June, 1967 



