10U SCIENTIFIC REPORTS 01*' THE AGRICULTURAL RESEARCH 



(8) Agrotis ypsilon. In a previous Report an account 

 was given of the rearing of this insect under artificial 

 conditions throughout the hot weather; successive broods 

 were then obtained up to August, when the eggs failed to 

 hatch. During the current year full-grown caterpillars 

 were observed on 3rd September, 1917, feeding in an experi- 

 mental plot of tobacco on the Farm. Eggs must have been 

 laid in this tobacco plot during 1 the first half of August. 

 This insect is therefore capable of breeding in the Plains 

 during the Rains, though whether the parents of these 

 larvae had bred in the Plains or were early migrants from 

 the Hills remains uncertain. 



(9) Azygophleps scalaris (Plate XVI, fig. 2). This year 

 caterpillars were found here for the first time boring 

 Sesbania stems. The moths appear in May, there being 

 only one generation in the year, aestivation and hibernation 

 taking place in the larval state. 



(10) Agromyza sp. About fifteen acres of pea (Pisum 

 arvense) grown alone -and about seventeen acres grown 

 intermixed with other crops were under observation during 

 the Pea Stem-fly season. In both the plots about 04 to 

 0-5 per cent, of the pea plants were found drying up with 

 external symptoms of Stem-fly attack, but closer examina- 

 tion showed that only about 8 per cent, of the drying plants 

 were affected with the fly and that the loss of the remainder 

 was not due to insect attack. 



(11) Ancylolomia chrysographella. From further 

 observations it seems evident that this is not usually a 

 pest of rice around Pusa. A search over large areas 

 revealed only a single larva in a dry seed-bed. 



(12) Cryptorrhynchus gravis. This weevil causes serious 

 damage to mango fruits in Eastern Bengal and Assam, 

 the fruits being bored by the grub and rendered valueless. 

 The damage done is very great, so much so that it is often 

 difficult to find fruits which are unattacked. This pest 

 was investigated at Dacca at the end of July, 1917, when 

 more than three dozen adult weevils were found on a single 

 mango tree, hiding amongst the roots of an epiphyte. 



