CARROT fly; common flat-body moth. 45 



autumn and dug-in, or after the Carrots are sown, or it may 

 be strewed at the time of sowing. 



The above observations give a variety of means, all tending 

 to the same results of pushing on healthy uninterrupted 

 growth, with such subsequent treatment as will either not 

 induce attack of the fly, or is likely to counteract attack, if it 

 occurs. 



To these methods of cultivation a note may be added 

 regarding treatment of ground on which there has been a 

 badly-infested crop of Carrots : — 



Although the summer broods hatch in three or four weeks, 

 the maggots may be found in the roots during winter, and 

 they change to pupte in the earth adjacent. It is there- 

 fore very desirable that all infested Carrot-beds should be 

 thoroughly cleared of roots in the autumn, and the ground 

 well dug, or trenched, so that such maggots or pupae as re- 

 main in the bed may be destroyed ; some may escape, but the 

 larger number will thus be buried too deeply to come up again, 

 or be thrown on the surface to the birds ; and a dressing of 

 gas-lime will be serviceable in destroying such of the grubs as 

 are lying near the surface. 



Common Flat-body Moth. Depressarla dcutella, Curtis. 



Common Flat-body Moth, caterpillar, and chrysalis. 



This little moth is one of three nearly-allied kinds, of which 

 the caterpillars injure our Carrots, and sometimes also our 

 Parsnip-crops. I only give a figure of one kind, as they are 



