VOL. 22 JANUARY 1920 No. 1 



PROCEEDINGS 



OF THE 



ENTOMOLOGICAL SOCIETY 



OF WASHINGTON 



r- 



CONTENTS 



o 1920 



V _ 







CRAIGHEAD, . C. BIOLOGY OF SOME COLEOPTERA OF THE FAMILIES 

 COLYDIIDAE AND BOTHRIDERIDAE ............................... 1 



MCATEE, W. L., AND BANKS, NATHAN DISTRICT OF COLUMBIA DIPTERA : 

 ASILIDAE .................................................. 13 



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. 



