56 



Experiment 9. 



Lygus pratensis L. 



May 29, placed twelve larvae and pupae on three Crescent berries, 

 varying from less than one-fourth to about one-third grown. 



Result. — June 6, all three berries withered up, black, and dead. In 

 one case onl}- was there any indication that, had the berry continued to 

 grow rapidly, a buttoned berry might have been formed. A few in- 

 sects alive and either in pupal or adult stage. 



Experiment 10. 



Lygus pratensis L. 



May 31, placed twelve larvae on cluster of three Crescents, respect- 

 ively one-fourth, one- third, and one-half grown. 

 Result. — June 7, cluster killed. 



Experiment 11. 

 Lygus pratensis L. 



May 31, placed four larvae on a one- third grown Crescent. 

 Result. — June 6, killed also. 



Experiment 12. 



Lygus pratensis L. 



May 31, placed fourteen larvae on a one-third grown Crescent. 

 Result. — June 4, killed. 



Experiment 13. 



Lygus pratensis L. 



June 1, placed ten larvae and pupae on a one-third grown Downing. 

 Result. — June 5, withered and drying up. 



Experiment 14. 

 Lygus pratensis L. 



June 1, placed nine pupae on a rather more than half-grown Kentucky. 



Result. — June 11, this berry made some growth after insects were 

 confined upon it, and exhibits a tendency to " button," which, however, 

 might or might not be due to the attack of the bugs. At this date the 

 insects were all dead, although several had reached the adult stage. 



Experiment 15. 



Lygus pratensis L. 



June 1, placed seventeen pupae on a nearly full-grown Kentucky. 

 Result. — June 5, dried up. 



