y 



h^D, 1,7 ^ 



Technical Series, No. 19, Part III. 



U. S. DEPARTMENT OF AGRICULTURE. 



BXJREJAXJ OF E:iSrTOIVIOIL.OG-Y. 



L. O. HOWARD, Entomologist and Chief of Bureau. 



TECHNICAL RESULTS FROM THE GIPSY MOTH 

 PARASITE LABORATORY. 



III. INVESTIGATIONS INTO THE HABITS OF 

 CERTAIN SARCOPHAGIDA 



By T. L. PATTERSON, 



AsmUtnt in Biology, Sheffield SeienHfic School, Yale University, 



WITH AN INTRODUCTION 



By ^\^. F. FISKE, 



In Charge of Gipsy Moth Parasite Laboratory, Bureau of Entomology. 



IssuiJD March 22, 1911. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 

 1911. 



