AND COLLEGE, PUSA, FOR 1914-15. 65 



Further observations have been made on the life-history 

 of Odoiporus longicollis, a weevil which bores in plantain 

 stems, and the life of the adult beetles has been found to 

 extend to a period of up to two years. 



With reference to the campaign against A grotis ypsilon 

 at Mokameh it was not known how this insect passes 

 through the hot weather and rainy season in the plains of 

 India, Large numbers were therefore obtained in March 

 and it has been found that, under conditions in the Insect- 

 ary, continuous broods have been obtained, which suggests 

 that it may breed somewhere in the vicinity of the areas 

 attacked in September-December. 



The status of Tenebroides mauritanicus as a grain-pest 

 having been doubtful, this was ascertained by experiments, 

 by which it was found that this beetle and its larvae cer- 

 tainly can and do eat wheat and rice grains, preferring 

 wheat to rice. The adult beetle preys upon the adult rice 

 weevil, Calandra oryza?, so that in grain affected by C. 

 or y zee the presence of these beetles is beneficial as, when 

 present in sufficiently large numbers they will ultimately 

 rid the grain of the weevils although they themselves will 

 eat a small proportion of the grains ; but the resultant loss 

 will be less than if the weevils bred unchecked. Further 

 experiments will be undertaken with this insect. 



Batocera tubus, a longicorn beetle commonly boring in 

 Fig, Mango, etc., has been reared from the egg and the 

 complete life-cycle observed to occupy a year. 



Balaninus c-album has been traced throughout the year, 

 though not reared from eggs. The life-cycle occupies a 

 vear. 



Complete life-cycles have been observed of Plotheia 

 celtis, Porthesia xanthorrhosa, Perigea capensis, Spodop- 

 tera mauritia, Liogryllus bimaculatus, Terias hecabe, 

 Hypolimnas bolina, Euplcea core, Junonia orithiya, 

 Huphina nerissa, Papilio polytes and Deilephila nerii and 

 further observations have been made on numerous other 

 insects, 



F 



