208 



IOWA ACADEMY OF SCIENCES. 



Adult beetles have been observed in autumn, as early as 

 August, but the probability is that only one brood occurs each 

 year, the adults surviving the winter. 



This fragmentary result enables us to say with certainty that 

 the eggs are deposited in dry and folded leaves of the food 

 plants of the adults and that the larvae immediately enter the 

 ground to feed upon the roots. To this extent they show 

 what measures of control must be adopted for this insect. 



Fig. 9. Epicaerus imhricatus. a, b, young larva, ba'^k and side view, c, head above. 

 d, head below, e, terminal segment. (From drawings by Miss King ) 



THE COSMOS WEEVIL. 



{Bar is confinis Lee.) 



This weevil, Fig. 4, was found September 1, 1895, to work 

 very extensively in the root-stocks and the base of the larger 

 branches of Cosmos bijnnnata causing the ultimate destruction 

 of the plant. The presence of the insect is first manifested by 



a ^miSF c 



Fig. 10. Baris confinis. (Drawn by Miss King.) 



the breaking off of the larger branches. By examining the 

 base of these branches, and especially the root- stock, it will be 



