/V/4 





Geological and Natural History Survey of Minnesota 

 Henry F. Nachtrieb Zoologist 



the 

 LEECHES OF MINNESOTA 



PART I. GENERAL ACCOUNT OF THE HABITS AND 



STRUCTURE OF LEECHES 



BY 



Henry F. Nachtrieb 



PART II. ANATOMY OF PLACOBDELLA PARASITICA 



BY 



Ernest E. Hemingway 



PART III. CLASSIFICATION OF THE LEECHES OF MINNESOTA 



BY 

 J. Percy Moore 



ZOOLOGICAL SERIES NO. V 



January 1912 

 Minneapolis Minnesota 



