SEP 20 tffNI 



BULLETIN 



OF THE 



Illinois Qtate j^aboratory 



OF 



NATURAL HISTORY, 



Urbana, Illinois. 



VOLUME V. 



ARTICLE IV.— THE XORTH AMERICAN CENTROPAGID.E 

 BELONGING TO THE GENERA OSP HRANTICUM, LIM- 

 NOCALANUS, AND EPISCHURA. 



By FREDERICK WILLIAM SCHACHT, B. S. 



Illinois State Laboratory of Natural History, 



URBANA, ILLINOIS. 



^^"1898. 



