46 First Report on Economic Zoology . 
minute larvae coming from the eggs laid on the paper may manage 
to work their way through. 
When the larvae and beetles are found in the bacon the attacked 
part should be cut away fairly deep, and well washed with a strong 
solution of salicylate of soda or salicylic acid. After a bad attack the 
store room should be well white-washed and then fumigated with 
hydrocyanic acid gas, bisulphide of carbon or with sulphur to 
destroy the beetles — the first for preference, as it is safer to use than 
the bisulphide and more effective than sulphur. 
The use of bisulphide of carbon to destroy the beetles and larvse 
amongst the bacon lias been suggested and would be quite successful 
if we had only to deal with those two stages and the pupal stage, but 
unfortunately the beetles also lay their eggs in and around the 
attacked parts, and I have not at present obtained any satisfactory 
results of the action of bisulphide of carbon or hydrocyanic acid gas 
on insect and mite ova. In all cases experimented with so far the 
ova have not been harmed to any appreciable extent. The infected 
bacon or ham had thus best have the attacked parts where many of 
the eggs appear to be laid cleansed with salicylic acid. A second 
fumigation fourteen days after the first is the safest plan to follow. 
Weevils amongst Stored Corn. 
( Calandra granaria , L.) 
Corn Weevils ( Calandra granaria) were sent by a correspondent 
of the Board of Agriculture which had been attacking some oats 
stored in a barn. This beetle, and a closely related one, the Bice 
Weevil ( C . oryzce, L.), which has also been forwarded by another cor- 
respondent, from damaged Indian corn, are the most destructive corn 
pests in granaries, stores, ships and barns, that are known. Not 
only do they attack stored corn, but also all cereals in transit. 
Whole cargoes of wheat, etc., are often destroyed in transit from 
India, Australia, etc. 
One or two instances are known of field attack near mills in 
Great Britain. 
The beetles lay their eggs in the corn, the maggots feed inside the 
grain and there pupate. They breed fairly rapidly in this country 
and may attack other stored goods than cereals. 
Beproduction may go on all the year in mills, but chiefly takes 
place in the spring and summer. The warmer the temperature the 
more rapidly do they breed. In Great Britain we mainly suffer from 
