CONTENTS 



Page. 



Introduction \) 



Bistory LO 



The work on parasites in L906 II 



I . Examination work 11 



Records prior to L906 12 



Breeding records of L906 13 



Most favorable plant conditions for parasitism of the boll weevil. . 15 



Field conditions 17 



Geographical considerations 18 



Boll weevil status 19 



Boll weevil chronology 21 



Conclusions 21 



II. Propagation work 22 



1. Interior work — transfer or artificial propagation of parasites 22 



2. Field work — release of parasites! 24 



III. Parasite breeding work 27 



Occurrence of species 28 



Geographical and seasonal distribution of parasites 31 



Biological notes on the parasites , 32 



IV. The sources of the parasites 41 



Parasites known to attack Rhynchophora 41 



Biologies of the weevils contributing parasites 14 



Rotation of hosts 48 



V. Conclusions and prospects 50 



Bibliography 50 



Index 53 



7 



