VOL. 23 JUNE 1921 No. 6 



PROCEEDINGS 



OF THE 



ENTOMOLOGICAL SOCIETY 



OF WASHINGTON 



;* IIJN 22 1921 



CONTENTS 



BUSCK, AUGUST, AND HEINRICH, CARL ON THE MALE GENITALIA OF THE 



MICROLEPIDOPTERA AND THEIR SYSTEMATIC IMPORTANCE .... 145 



GREENE, CHARLES T. TWO NEW SPECIES OF DIPTERA 125 



MIDDLETON, WILLIAM SOME NOTES ON THE TERMINAL ABDOMINAL 



STRUCTURES OF SAWFLIES 139 



THOMPSON, W. R. AND THOMPSON, M. C. STUDIES OF ZENILLIA ROSEANAE 



B. & B. A PARASITE OF THE EUROPEAN CORN BORER (PYRAUSTA 

 NUBILALIS HB.) 127 



PUBLISHED MONTHLY EXCEPT JULY, AUGUST AND SEPTEMBER 



BY THE 



ENTOMOLOGICAL SOCIETY OF WASHINGTON 



U. S. NATIONAL MUSEUM 



WASHINGTON, D. C. 



Entered as second-class matter March 10, 1919, at the Post Office at Washington, D. C., under 



Act of August 24, 1912. 



Accepted for mailing at the special rate of postage provided for in Section 1103, Act of October 

 3, 1917, authorized July 3, 1918. 



