68 N.S. ENTOMOLOGICAL SOCIETY. 



ACKNOWLEDGEMENTS. 



The writer is indebted to Prof. W. H. Brittain for assistance and suggestions in 

 carrying on this investigation and to Mr. L. G. Saunders who gave considerable assist- 

 ance at the laboratory. Also to Mr. R. T. Webber for his determination of the dip- 

 terous parasites, Mr. Muesbeck and Dr. Matheson for determining the hymenopter- 

 ous parasites, and Mr. H. M. Parshley for determining the Hemiptera. The photo- 

 graphic plates illustrating this and the preceding articles were prepared by Mr. L. G. 

 Saunders during this season's work. 



