y 



I / 5 



Vol. XI July, 1911 No. 3 



University Studies 



Published by the University OF^.^^£&RAS*iA-.^ 



(^ jjii 2d 1934 ^i 



COMMITTEE OF PUBL^'^^^'^'*^*^'^'''-' --^ 



C. E. BESSEY P. H. GRUMMANN 



F. M. FLING W. K. JEWETT 



L. A. SHERMAN 



CONTENTS 



I. A New Species of Trematode from the Painted 

 Terrapin, Chrysemys marginata Agassiz. F. D. 



Barker and G. IV. Covey 193 



II. The Pentatomjdae of Nebraska. J. T. Zimmer... 219 

 III. Williams' " The Aphididae of Nebraska." J. J. 



Davis 253 



LINCOLN, NEBRASKA 



