49 



Mr. Smith said that he had placed naj)hthalin in boxes that were 

 well infested with Anthreniis ; this prevented development so long as 

 any of the material remained, but after it all disappeared, which in 

 one case took over a year, the larvro developed. 



The following papers Avere then presented : 



SPRAYING APPLES AGAINST THE PLUM CURCULIO. 



By S. A. FoKCES, I'rhoHii, [11. 

 [ WitlKlrawn for pnlylication <^lse\vhei"e. 1 



VALUE OF COPPER SULPHATE AGAINST MOSQUITO LARV^. 



By C. L. Marlatt, Wasliiiigtvii, D. C. 



fWitbdrawu for publication elsewhere.] 



MORXIXG SESSION, FRIDAY, DECEMBER 30, 1904. 



The meeting was called to order at 10 a. m. by President Quaint- 

 ance. On motion it was decided to defer the discussion on the follow- 

 ing series of papers on miscellaneous insects until all of them had 

 been read. The following papers were then presented, the last two 

 by title : 



BRIEF NOTES ON OHIO INSECTS FOR 1904. 



By Herbert Osborn, Coliinibus, Ohio. 



No particularly serious or widespread insect outbreaks have been 

 noted in Ohio during the past season, but there have been a number 

 of cases of local abundance and destruction, some of which may well 

 be placed on record. 



The pear slug {Eriocampoides Ibnachia Retz.) was noticed in 

 Huron, near the lake shore, in small orchards of cherry trees, in* 

 which many of the trees were so seriously infested as to appear quite 

 brown and burned. This condition was noticeable from a consider- 

 able distance, and closer inspection of the trees showed the foliage to 

 be almost completely destroyed by the numerous larva\ This occur- 

 rence was during the latter part of July, and at this time the larviv 

 were apparently reaching maturity. 



The willow weevil {Cry ptorhyaclius lapatlii Linn.). Specimens 

 of this introduced species have been handed to me l)y Prof. E. H. 

 Edwards, of Cleveland, who tells me that the insect occurred in large 

 numbers on willows and probably also on poplars in the vicinity of 

 Cleveland. Both larvfie and adults were observed and the damage 



25524^No. .52—05 m i 



