CONTENTS OF THIS NUMBER. 



Crosby, C. K.- — A Revision of the North American 



Species of Megastigmus Dalman 155 



Banks, Nathan — The Neuropterous Genus Palpares. 171 

 Brain, Chas. K. — Stomoxys Calcitrans Linn., Part II 197 

 Smith, Lucy Wright — The Biology of Perla Immar- 



ginata Say 203 



Shelford, Victor E. — The Life-History of a Bee-Fly 

 (Spogostylum Anale Say) Parasite of the Larva of 

 a Tiger Beetle (Cicindela Scutellaris Say Var. 



Lecontei Hald.) 213 



Townsend, Charles H. T. — A New Application of 



Taxonomic Principles 226 



Patch, Edith M. — A Study in Antennal Variation. . 233 

 ToTHiLL, John D. — A Study in Variation in the 

 North American Greenbottle Flies of the Genus 

 Lucilia, with Systematic Notes on the Species 



Involved 241 



Whiting, Phineas W. — Observations on the Chseto- 



taxy of Calliphorinae 257 



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