4 BULLETIN "iOS, U. S. DEPAETMENT OF AGRICULTURE. 



The total number of ears examined was 1,949. Of these, 48 per 

 cent were in poor shucks, 28 per cent in good shucks with wormholes, 

 and 25 per cent in good shucks without wormholes. 



Of the ears in poor shucks, 52 per cent were infested with weevils 

 and 96 per cent with beetles. Of the ears in good shucks with worm- 

 holes, 38 per cent were infested with weevils and 93 per cent with 

 beetles. Of the ears in good shucks without wormholes, 9 per cent 

 were infested with weevils and 56 per cent with beetles. 



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Fig. 



1. — Black weevils {Calandra oryza), termed 

 " weevils " in this bulletin. 



Fig. 2. — Species of small reddish brown 

 insects, termed " beetles " in this bul- 

 letin. 



A comparison of the classes 

 with different shuck coverings 

 shows 43 per cent more weevil 

 infestation and 40 per cent more 

 beetle infestation in poor shucks 

 than in good shucks without wormholes. The wormholes through 

 what was otherwise good shuck coverings permitted increased in- 

 festation amounting to 29 per cent for weevils and 37 per cent for 

 beetles. 



Thirty-eight per cent of all the ears examined were infested with 

 weevils and 85 per cent with beetles. From the standpoint of 

 infestation the beetles were the most serious of the two classes of 

 insects; however, close examination failed to discover any damage 



