BULLETIN 



OF THE 



ILLINOIS STATE LABORATORY 



OF 



NATURAL HISTORY 



Vol. VL SEPTEMBER, 1901 Article I. 



THE DRAGON-FLIES (ODONATA) OF ILLINOIS 

 PART L PETALURID/E. /ESCHNID/E, AND GOMPHID^E 



BY 



JAMES G. NEEDHAM and CHARLES A. HART 



UNIVERSITY PRESS 

 CHAMPAIGN AND URBANA 



-Monti Jff isf^^ 



