MAR 7 1898 



CONTENTS. 



PAGE. 



Article I.— Bacteria ISTormal to Digestive Organs of Hemiptera. 



By S. A. Forbes. January, 1892 1 



Article II.— Description of two New Deltoid Moths. By G. H. 



French, Carbondale, Illinois. March, 189-4 8 



Article III.— The Life History and Distribution of the Prothon- 

 otary Warbler in Illinois. By W. E. Loucks, Peoria, 

 Illinois. June, 1894 10 



Article IV.— List of Altitudes in the State of Illinois. By C. W. 



RoLFE. November, 1894 36 



Article v.— A Preliminary Account of two New Oligochasta from 



Illinois. By Frank Sjiith. January, 1895 138 



Article. VI.— On the Entomology of the Illinois Eiver and Ad- 

 jacent Waters. First, Paper. By C. A. Hart. Decem- 

 ber, 1895 149 



Article VII.— Descriptions of Three New Parasitic Ilymenoptera 

 from the Illinois Eiver. By William H. Ashmead. 

 December, 1895 -T4 



Article VIII.— Notes on Species of North American Oligochaata. 



By Frank Smith. December, 1895 285 



Article IX.— Some Notes on the Brain and Pineal Structures of 

 Polyodon folium. By H. G arm an, Lexington, Ky. April, 

 , 1896 298 



Article X. — Descriptions of New Species of Eotifera and Proto- 

 zoa from the Illinois Eiver and Adjacent Waters. By 

 Adolph Hempel. July, 1896 310 



Article XL— A Check-List of the Coccidae. By T. D. A. Cock- 



erell. August, 189() 318 



Article XII. — On a Bacterial Disease of the Squash-bug (Anaf^a 



tristis DeG.) By B. M. Duggar. October, 1896 340 



Article XIIL— Descriptions of Five New Species of Scale Insects. 



with Notes. By Willis Gkant Johnson. October, 1896. 380 



Article XIV.— Notes on Species of North American 01igocha?ta. 



II. By Frank S^iitii. December, 1896 396 



Article XV.— Contribution tn a Knowledge of the North Ameri- 

 can Fresh-water Ostracoda included in the Families 

 CytheridEe and Cyprididte. By Eichard W. Sharpe. 

 February, 1897 414 



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