CONTENTS 



McATEE, W. I/., and WALTON, W. R. District of Columbia Diptera: 



Tabanidae 188 



MCGREGOR, E. A. A new host plant of the boll weevil 78 



MALLOCK, J. R.: A revision of the Dipterous family Clusiodidae 



(Heteroneuridae) 2 



The genus Cnemedon Egger in North America. 



(Diptera : Syrphidae ) 127 



MosiER, C. A., and SNYDER, T. E.: Notes on gadflies in the Florida 



Everglades. (Dipt.) 115 



Further notes on Tabanidae in 

 Florida Everglades. (Dipt.).. 182 



NELSON, JAS. A. : An eyeless drone honeybee 105 



PiERCE, W. DWIGHT: Medical entomology a vital factor in the prose- 

 cution of the war 91 



The case of the genera Rhina and Magdalis . . 72 

 POPENOE, C. H., HYSLOP, JAMES A. and SANFORD, H. L. : Allen Bowie 



Duckett ... 185 

 RoHWER, S. A.: A note on Chalcis abiesae Girault. (Hym. Chalci- 



didae) 18 



New sawflies of the subfamily Diprioninae. (Hym.) 

 Notes on and descriptions of sawflies belonging to 



the Tenthredinid tribe Hemichroini. (Hym.) 161 



The North American species of the sawfly genus 



Laurentia. < Hym.) 157 



with CUSHMAN, R. A 186 



Rules of publication in the Society Proceedings 1 



SANFORD, H. L., with POPENOE, C. H., and HYSLOP, JAMES A 185 



SNYDER, T. E-, with MOSIER, C. A 115 



182 



TOWNSEND, C. H. T. : Some muscoid synonymy, with one new genus. 



(Dipt.) 19 



WALTON, W. R., with MCATEE, W. L 188 



WHITE, G. F. : A note on the muscular coat of the ventriculus of the 



honeybee (Apis meHifica) 152 



II 



