THE GEOLOGICAL AND NATURAL HISTORY SURVEY OF MINNESOTA. 

 N. H. WiNCHELL, State Geologist. 



w" 







A FINAL REPORT 



ON THE 



M 



V^Ai 



L 





iV 



Crustacea of Minnesota 



INCLUDED IN THE ORDERS 



CLADOCERA AND COPEPODA. 



Together with a synopsis of the described species in North America, and keys 

 to the 1- ^ojvn. species of the more important genera. 



By C. L. HERRICK, Assistant in Zoology. 



MINNEAPOLIS : 



JOHNSON, SMITH & HARRISON. 

 1884. 



