172 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 4 



The season of 1910 in Minnesota was the driest in the history of the 

 white man. In Itasea Park where, in former years, the mosquitoes 

 had been unbearable, in 1910 no mostjuitoes were present, even in 

 the usual swampy regions of the park. I give this to show how dry 

 it was. Now, whether because of this excessive dryness or not, the 

 Larch Sawfly larvse did not remain on the tamaracks as long as they 

 had in previous years, leaving while the trees still showed green. 

 Also, the cocoons were considerably smaller than they had been in 

 previous years. It seems, then, that the tamaracks here will have a 

 little respite next year from the gross attacks of these pests. The other 

 regions of infestation, according to reports received, did not manifest 

 any such peculiarity. 



President Sanderson: Any discussion? 



Mr. Hunter: Doctor Hewett sent us from England 340 pupae 

 of the Larch Sawfly, and we placed them in the ground. Some thirty 

 of them emerged as females, and the rest either did not emerge, or 

 were parasitized, and we got no males at all. We attached them to 

 larch cuttings, kept them green, but were unfortunate in getting no 

 oviposition. 



Adjourned. 



Afternoon Session, Thursday, December 29, 1910 



The session was called to order at 1.30 p. m. and after the trans- 

 action of business the reading of papers was continued. 



President Sanderson: The first paper will be presented by Mr. 

 Swenk, 



A NEW SAWFLY ENEMY OF THE BULL PINE IN NEBRASKA 

 By Myron H. Swenk, Lincoln, Neb. 

 [Withdrawn for publication elsewhere.] 



President Sanderson : Is there any discussion on this paper? 



Secretary Burgess: I would like to ask Mr Swenk in regard to the 

 bacterial disease, if he finds it present where there is only a small 

 number of caterpillars, or whether it is present only during severe 

 outbreaks. 



Mr. Sw^enk: I think you ^\dll find some disease when caterpillars 

 occur in small numbers but it is more common when many are present. 



