CONTENTS OF THIS NUMBER. 



STURTBVANT A. H.-Notes on North American 

 Drosophihd^ with Descriptions of Twenty-three 

 New Species 



MiCKEi., Ci^AR^NCE B.-A Review of the Amencan ^'' 

 Species of Xylocelia.. 



344 



BUENO, J. R DB 1.A TORRE-Aquatie Hemiptera. A 

 Study of the Relation of Structure to Environ- 

 ments 



McAtee, W. L.-Key to the Nearctic Species of 

 -raracalocoris . 



366 



Woods WM^COLCORD-The Malpighian Vessels of 



Haltica Bimarginata Say (Coleoptera) 3^, 



Richardson, C. H.-The Attraction of Diptera to 

 Ammonia 



- 408 



Brown Kearn B.-The Specific Effects of Certain 

 Leaf-feeding Coccidse and Aphididfe upon the 



Pmes 



424 



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 Canaaa, $3.50; other countries, 34.00. Checks, drafts or money 

 orders should be drawn payable to Annals Entomolog.cai. 

 Society of America, and addressed to Herbert Osborn 

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