E GEE wo 11 J). 



This bulletin gives the results of investigatious extendiiig 

 over more than four years. While the planning of the 

 work and the carrying out of investigations in the labora- 

 tory and insectary have been in the hands of the authors, 

 most of the field \^'ork has been conducted b}^ Messrs. 

 B. C. Shantappa and T. V. Subramaniam, Junior Assist- 

 ant Entomologists. The excellent coloured plates are 

 from paintings made by Mr. Ranganayakalu Naidu, 

 Senior Artist of the Department. 



November, 191?. LESLIE C. COLEMAN. 



