CONTENTS. 



Page. 



Article 1. — Bacteria Normal to Digestive Organs of 



Hemiptera. By S. A. Forbes 1 



Article 11.— JDescri/ption of tivo New Deltoid Moths. 



By G. H. French 8 



Article 111.— TJie Life History and Distribution of 

 the Prothonotary Warhler m Illinois. 

 By W. E. LoucKS 10 



Article W.—List of Altitudes in the State of Illi- 

 nois. By C. W. KoLFE 36 



Article Y. — A Preliminary Account of two Ne%o 

 Oligocha4a from. Illinois (t©=^e-eoe-- 

 tteeed). By Frank Smith 138 



