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HALF HOUES WITH ESTSECTS. 



[Packaud. 



accompanying figure * (12) taken from the Report of the En- 

 tomological Society of Ontario, Canada, for 1871, represents 

 the larva and pupa of a common form (Agriotes mancus) 

 which is very injurious to wheat. The wire worm is readily 

 known by its smooth, slightly flattened cylindrical hard red- 

 dish body. Mr. Johnson Pettit, who has made us fully ac- 

 quainted with the habits of the wheat wire worm, says that 

 it lives three years in the larval state. He obtained a knowl- 

 edge of its habits by planting wheat in flower pots. He 



Fig. 12. 



%im^ 



THieat Wire AVorm. 



found the grubs in the autumn, "with the first cold weather 

 they ceased to eat and were then placed in a sheltered situa- 

 tion until the return of warm weather in the spring, when 

 they were restored to the breeding cages. They soon gave 

 evidence of being alive and possessing unimpaired appetites ; 



*1. Larva, cnlargecl .1 little over three times, n, a transverse section. 2. Un- 

 der side of the head and three succeeding segments. 3. Margin of the front; a, 

 position of t'.ic antenna;. 4. Mandibles. 5. Legs. G. Under side of the last 

 segment of the body. 7. Upper and under side of the pupa, the line between 

 icprcocuting the ;;ctu:.llcngth (:;ftcr Horn). 



2G 



