136 PRIZE ESSAY: 



WHEAT WEEVIL. Calandra 



Grandaria. 

 (Natural Size.) WHEAT 



the floor and walls. They remain torpid for a while, and after 

 having paired soon die. They avoid the light, hence one reason 

 why constant turning of the wheat and sifting is advantageously 

 employed to drive them away. They lie in general four or five 

 inches below the surface of the heap, and here the majority 

 pair. Kiln drying appears to be the only certain destruction to 

 this pest. Frequent turning and airing of the heaps, whitewash- 

 ing the walls, and keeping the granaries clean, with abundant 

 ventilation, are artifices strongly recommended for the purpose 

 of diminishing the numbers of this pest. It is not likely, how- 

 ever, that farmers in Canada will suffer much from its depreda- 

 tion for some years to come. Where large quantities of wheat, 

 and particularly of foreign wheat, are allowed to accumulate in 

 store ; there, no doubt, the ravages of this insect will be felt. 



245. The Wolf,*or Little Grain Moth, (Tinea Granella.) 

 Mr. Curtis says that this moth is completely established in Bri- 

 tain, as well as in every part of Europe. The late Dr. Harris 

 says that from various statements, deficient, however, in exact- 

 ness, he was led to believe that this insect, or an insect exactly 

 like it in its habits, prevails in all parts of the country. Since 

 its existence is quite established in America, and its known habits 

 are such that it may at any time appear in destructive numbers 

 in Canada, a notice here of its general appearance and peculiar- 

 ities, will not be out of place. From April till August (*) the 

 moth is found in granaries or magazines, resting by day on the 



(1) Curtis. 



