Table of Contents. 



Vll 



PLATES. 



I. Facing p. 70. Diptera of the Genera Anastocchus , Hyalanthrax, 



and Chrysanthrax. 



II. Facing p. 90. Fossil Dragon-flies from the EngHsh OHgocene. 



III. Facing p. 124. Thysanoptera of the Genera Heterothrips and 



Odontothrips . 



The Committee on Pubhcations declares that each paper of this volume 

 was distributed on the date indicated on its initial page. The index, 

 title page, and minutes of meetings for 1916 (pp. i-xiv; 231-236) were 

 issued on February 21, 1917. 



