54 
CORN. 
The above notes all agree in what is the important point, namely, 
that the maggot is to be fonnd under the sheath, or at the sheathing 
base, or axil of the leaves of the young plant; and I think it is to be 
gathered that change of colour to yellow or to dead green does not 
take place until the mischief is done. Further points are open to 
enquiry; any information as to presence on early-sown Wheat or 
Barley would be very useful, and I should be greatly obliged by 
specimens of suspected plants being forwarded to me. 
Ribbon-footed Corn Fly. Chlorops tceniopus, Curtis. 
2—6, Maggot, chrysalis, and fly of Chlorops tceniopus, nat. size and magnified. 
7 and 8, Ccelinius niger; 9 and 10, Pteromalus micans (parasite-flies), nat. size and 
magnified ; 1 and 12, furrowed and infested corn-stem. 
So far as may be judged by the reports sent in, the most destructive 
corn-stalk attack of last season was that of Chlorops, and the injury 
was certainly much more decided than that caused by Hessian Fly. 
This attack has long been known in this country, certainly as a 
crop-pest as far back as 1837. 
So far as my opportunities for search have enabled me to tell, it is 
usually more or less present, and about eighteen years ago I myself 
shook the black and yellow fly in immense numbers from a stack in 
West Gloucestershire by simply thrusting my hand into the infested 
Barley-stack, and drawing out handfuls of straw and shaking them 
over a large sheet of paper. 
