x] Beetles 121 
The beetle is about } inch long and of a dark- 
brown colour. As is the case with all weevils it has a 
long snout or proboscis, carrying at its base a pair of 
elbowed feelers (see Fig. 34a). The mouth is at the end 
of the proboscis. The larva is a small white legless 
grub with a wrinkled body, brownish horny head, and 
distinct biting jaws. These beetles are very prolific, 
and as only one larva is required to destroy each grain, 
the introduction of a few weevils may mean a con- 
siderable loss. 
Remedial Measures. 
As the beetle is averse to cold we can do some good 
by keeping our barns well ventilated so as to keep 
the temperature as low as possible. By leaving the 
windows or door of the granary open on frosty nights. 
the beetles are checked. They do not go very deep into 
a heap so that storing in bulk will keep a considerable 
quantity of grain free from the beetle. 
If we find our grain attacked we have a fairly easy 
method of killing the pest. This consists in fumigating 
with carbon disulphide. In a closed bin it is a simple 
matter and consists in putting the carbon disulphide 
in saucers on top of the corn. About 1lb. to 100 
bushels is sufficient (the amount depends on the space, 
a small quantity of corn in a large bin will require 
more than the above quantity). The bins should be 
opened after about 24 hours. 
If the grain is stored in a barn all holes should be 
stopped up and the barn made as air-tight as possible. 
Carbon disulphide is then put on the top of the grain 
in saucers, 1 Ib. for every 1000 cubic feet of space. 
If the heap is covered with canvas a smaller quantity 
