3M36 



10 



I .rt' N 



.Is 



A REVISION OF THE NORTH AMERICAN SPECIES 

 OF CYCLOPS. 



O. DWIGHT MARSH. 



Reprinted from Volume XVI, Part II, of the Transactions op the 

 Wisconsin Academy op Sciences, Arts, and Letters.] 



[Issited April, 1910.] 



r*x 



