57 

 Experiment 16. 

 Lygus pratensis L. 



Jane 1, placed six pupae on a less than half-grown Kentucky. 

 Result. — June 7, killed. 



Experiment 17. 



Lygus pratensis L. 



June 1, placed six pupaB on Kentucky of about the same size as the 

 preceding. 

 Result. — June 7, seriously withered. 



Experiment 18. 



Lygus pratensis L. 



June 5, placed five pupae on a one-fourth grown Jersey Queen. 



Result. — June 21, berry seriously injured by being dwarfed, and it 

 appeared to wither instead of ripen, although the plant was frequently 

 watered. Xo indication of u buttoning." Insects dead, but they had 

 lived to reach the adult stage. 



Experiment 19. 



Lygus pratensis L. 



June 5, placed four pupae on Jersey Queen as near as possible like 

 the one used in Experiment 18. 



Result. — June 21, berry attained nearly full growth, not deformed, 

 except by a few slight depressions in surface which could not be said 

 to indicate buttouiug. Does not look as fresh and healthy as those 

 not under experiment. Bugs dead, but as adults. 



Experiment 20. 



Lygus pratensis L. 



June 5, placed three pupae on Jersey Queen of same size as the pre- 

 ceding. 



Result. — June 11, berry smooth, ripened in normal condition, and 

 seems uninjured. The insect escaped from this after being confined 

 upon it for about one week. 



Experiment 21. 



Lygus pratensis L. 



June 5, four larva3 had, for several days previous, been clustered 

 upon a Jersey Queen about the size of those used in the three preced- 

 ing experiments. These bugs are now confined upon the berry. 



