THE 



Ohio Journal of Science 



PUBLISHED BY THE 



Ohio State University Scientific Society 

 Volume XVI D ECEMBER, 10 1 5 No. 2 



TABLE OF CONTENTS 



Wells — A Survey of the Zoocecidia on Species of Hicoria Caused by Parasites 

 Belonging to the Eriophyidae and the Itonididas (Cecidomyiidae) 37 



West — The Geometry of the Translated Normal Curve 60 



Gibson and Cogan^A Preliminary List of the Jassoidea of Missouri, with 



Notes on Species 71 



News and Notes 79 



A SURVEY OF THE ZOOCECIDIA ON SPECIES OF 



HICORIA CAUSED BY PARASITES BELONGING 



TO THE ERIOPHYIDiE AND THE ITONIDID^ 



(CECIDOMYIIDAE).* 



Bertram W. Wells. 



This paper is primarily an attempt to present adequate 

 descriptions of the types of 30 itonid (cecidomyid) and 2 

 eriophyid (mite) galls, collected by the writer on hickory 

 leaves. It is believed to contain sufficient new material to 

 warrant its publication in advance of a general survey of 

 N. E. United States zoocecidia, of which it will form a part. 

 The data is based on collections made in Connecticut, Ohio and 

 Kansas, most of the material however, being taken in Ohio. 



In addition, those forms (few in number) previously 

 described which have not been seen by the author, have been 

 added, so as to give a character of completeness to the survey 

 of the two groups of galls. 



*Contribution from the Botanical Laboratory of the Ohio State University, 

 No. 92. 



37 



