VOL. 22 DECEMBER 1920 No. 9 



PROCEEDINGS 



OF THE 



ENTOMOLOGICAL SOCIETY 



OF WASHINGTON 



CONTENTS 



GAHAN, A. B. ON THE IDENTITY OF SEVERAL SPECIES OF CHALCIDOIDEA 



(HYMENOPTERA) 235 



HEINRICH, CARL SYNONYMICAL NOTE IN AECOPHORIDAE (LEP.) -'!- 



ST. GEORGE, RAYMOND A. NOTES ON THE PERIODICAL CICADA IN 1 '.!'.>. . 227 



WICKHAM, H. F. NEW SPECIES OF PERTHALYCRA AND OSMODERMA (COL.) 232 



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. 



