The Bulletin 
m I . 
I Y) It! 
color characteristic of the larvae between moPs. This color is assumed 
very gradually, however, and frequently by close observation it is pos¬ 
sible to distinguish a larva that has molted within the last twelve hours. 
NUMBER OF MOLTS 
In all, .221 larvae have been raised from egg to pupal condition and 
many others have been carried through part of their development. 
Practically all of these larvae evidently molted four times, but of this 
number only 93 were observed to make all their molts. A few indi- 
Figure 28. Laboratory table arranged with traj s for holding jelly glasses and salve 
boxes used in breeding the Southern Corn Bill Bug. 
viduals, fourteen in all, molted five times and three of these molted 
six times. From these observations it seems safe to conclude that the 
normal number of larval molts is four. 
Observations made on the above fourteen larvae would lead one to 
believe that poor food would increase the number of larval molts. In 
one case the larva was purposely given poor food after its fourth molt. 
It molted six times. In another case a larva was purposely given 
poor food from the time it hatched, and it molted six times. Several 
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