Report of the Entomologist. 



To the Director of the Cornell rniversity Agricultural Experiment 

 Station: 



Sir. — During the past jear several injurious insects have been 

 investigated by this division of the station. For instance, we 

 have demonstrated that the mysterious " dying back or blight- 

 ing " of the tender tips of peach nursery stock is largely, if not 

 entireb due to the punctures of the common and well-known 

 tarnished plant bug. A maggoty, which burrows down the center 

 of and finally girdles young raspberry shoots, was also quite de- 

 structive in several localities; we have full, illustrated notes on its 

 habits and life history, but have as yet failed to get the adult 

 insect — an Anthomyiid fly. Some of the scale insects which are 

 common here in the east have been bred on trees growing in the 

 insectary, with the result that new and very imjiortant facts 

 regarding their life histories have been learned. 



The 500 peach trees in our extensive peach-borer experiment 

 were first treated in 1894, and the examination last spring revealed 

 several interesting and important facts. Although the careful 

 examination and treatment of each one of these trees involves 

 much labor, the results thus far obtained afford sufficient en- 

 couragement to warrant the continuance of the experiment for 

 a series of years. 



Considerable work was undertaken by this division during 

 1894 and 1895, under the auspices of the so-called Experiment 



