499 



sr/itlerccdis, and Jllcdicaf/o liijHilma. while il will rcadilv hiv 

 tlu'iii oil the larger-seeded (' rolalana . and i>ii indigo seeds in 

 the pod. 



'Idle seeds of Cassia siamca are almost paper-thin and their 

 form alone wonld seem to forbid them being ntilized by any 

 r.niehid. 



Entranee of the BnicJiidHC into the Seed. 



Those speeies which cement the egg solidly to the seed 

 itself have the advantage of the snpport of the egg in p(metrat- 

 ing into the seed and need not wander abont to find a favoraWe 

 point for entrance. The speeies which attach the seeds to the 

 pod at times and those which place them in crevices of the pod 

 or loose among seeds in storage have to meet the prol)lem of 

 placing themselves as larvae in some position where they may 

 secnre some other snpport for the boring operation. If the 

 egg is cemented on the pod directly over the seed the larva will 

 freqnently find the surface of the seed lying close against the 

 pod where it has entered and the hole made in entering the 

 pod will serve its pnrpose. In any case if it misses this point 

 in entering the pod it can easily wedge itself between the seed 

 and pod and get its pnrchase in that way and the larvae from 

 eggs laid within the pod can do the same. Larvae from eggs of 

 Bruclius obtectus laid among beans in storage have been seen 

 to enter where two seeds tonch or where seed touched the 

 glass of the tnbe in which they were under observation. 



Emergence of Bruchkhie from Seeds. 



Considerable dift'erence of interpretation has existed as 

 to the emergence of Bruchidae,- some considering that the larva 

 makes complete preparation for the emergence of the adnlt 

 while others have snpposed that the adnlt gnaws its way ont of 

 the seed. In the case of all Bruchidae which I have stndied 

 the adnlt pnshes loose from the seed a circular bit of the seed 

 coat which has been gnawed aronnd and loosened from the rest 



