

VOL. 20 



DECEMBER 1918 



No. 9 



PROCEEDINGS ( 



OF THE 



ENTOMOLOGICAL SOCIETY 



OF WASHINGTON 



CONTENTS 



COCKERELL, T. D. A. A NEW COLLETID BEE FROM ECUADOR . . . 200 



CUSHMAN, R. A., AND ROHWER, S. A. THE GENUS EPHIALTES FIRST PRO- 

 POSED BY SCHRANK (HYM. ) 186 



MC ATEE, W. L., AND WALTON, W. R. DISTRICT OF COLUMBIA DIPTERA! 

 TABANID.E 



POPENOE, C. H., HYSLOP, JAMES A., AND SANFORD, H. L. ALLEN BOWIE 



DUCKETT . . 185 



PUBLISHED MONTHLY EXCEPT JULY, AUGUST AND SEPTEMBER 



BY THE 



ENTOMOLOGICAL SOCIETY OF WASHINGTON 

 U. S. NATIONAL MUSEUM 



WASHINGTON, I). C. 



Entered as second-class matter March 10, 1919, at the post office at Washington, 1 > C., uinlri 



the act of August 24, 1912. Acceptance for mailing at special rate of postage 



provided for in Section 1103, Act of October 3, 1917, authorized 



on July 3, 191S. 



