4 BULLETIN 708, U. S. DEPARTMENT 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. 
™~ 
? 
% 
ae 
% 
Fic. 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 
Fig. 1.—Black weevils (Calandra oryza), termed infestation and 40 per centmore 
“‘weevils”’ in this bulletin. : : : 
beetle infestation in poorshucks 
than in good shucks without wormholes. The wormholes through 
what was otherwise good shuck covermgs permitted increased im- 
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 standpomt of 
infestation the beetles were the most serious of the two classes of 
insects; however, close examination failed to discover any damage 
