INSTITUTE AND COLLEGE, I'USA, FOR 15Jl()-ll. 11 



The study of the life histories of injurious insects has 

 progressed, a number of important pests having been reared 

 in the insectarv and their habits studied. Mr. Ghosh has 

 prepared a memoir on palm beetles, and IMr. Dutt on some 

 Aculeate Hymenoptera. Other memoirs on life histories 

 are in preparation. 



The insect survey of India has been continued as time 

 permits. Large collections have been sent for study Ijy 

 specialists, and to the authors of volumes of the " Fauna of 

 India " series. Mr. Nowrojee has prepared a memoir on 

 some aquatic insects. 



The investigation of the damage caused by termites 

 (white-ants), started by Mr. Lefroy in collaboration with 

 Mr. Evans, Deputy Director of Agriculture, Northern 

 Circle, Central Provinces, was continued by Mr. Fletcher. 

 The latter officer was also invited to tour with the Raihvay 

 Sleeper Commission, to advise on the best methods of 

 reducing the enormous losses caused on Indian railways by 

 these insects, and is carrying out experiments on the pre- 

 servation of wood from their attacks. 



8. Second Entomological Section. — This section is en- 

 gaged in the study of Dipterous insects, and in particular 

 those w^hich suck blood and w-hich mav transmit disease. 

 Mr. Howlett. who is in charge of it, only rejoined after 

 absence on sick leave for a year and five months, towards 

 the end of March, 1911. The work of the section was 

 therefore practically in abeyance until the last quarter of 

 the year. 



Since his return, Mr. Howlett has had to devote much 

 time to disposing of collections of material accumulated in 

 his absence. The identification of these has progressed 

 with assistance from the Indian and British Museums. 



As special w^ork, Mr. Howdett has been engaged in a 

 study of parasites of Tabanida? (" horse-flies '") ; the tem- 

 perature reactions of mosquitoes, temperature apparen.Liy 

 being one of the main factors controlling mosquito bite; 

 the relative efficiency of the iish know^n as " Millions " and 

 other enemies of mosquito-larvae; and peach flies. In the 



