192 THE CANADIAN ENTOMOLOGIST. 



ing and replacing the stopple of the collecting bottle. The lantern in 

 hand enabled him more readily to adjust the light, and he had found that 

 it was often more desirable to throw the penumbra rather than the full 

 light upon the tree, many insects often fleeing from a strong light. 



Miss Smith gave an account of the damage done to the oaks in Wis- 

 consin and Illinois by the larvae of a little Tortrix, Argyrolepia querci- 

 foliana Fitch. 



A very interesting discussion took place on the question of instinct or 

 reason displayed by insects, and many curious instances were cited proving 

 that instinct and reason differ in degree and not in kind. 



The meeting then adjourned. 



LECANIUM TULIPIFER^. 



BY A. J. COOK, LANSING, MICH. 



On page 218 of the " Revised Manual," in speaking of other sources 

 than flowers from which bees collect sweets, I remark that I have seen the 

 bees thick about a large bark-louse, which attacks and often destroys one 

 of our best honey-trees. This is an undescribed species of the genus 

 Lccaniitni. 



In the summer of 1870, this louse, which, as far as I know, has never 

 yet been described, and for which I propose the above very appropriate 

 name, titlipifcrce — the Lecanium of the tulip tree — was very common on 

 the tulip trees about the College lawns. So destructive were they that 

 some of the trees were killed outright, others were much injured, and had 

 not the lice for some unknown reason ceased to thrive, we should soon 

 have missed from our grounds one of our most attractive trees. 



Since the date above given I have received these insects, through the 

 several editors of our excellent bee papers, from many of the States, 

 especially those bordering the Ohio River. In Tennessee they seem very 

 common, as they are often noticed in abundance on the fine stately tulip 

 trees of that goodly State. In the South this tulip tree is called the pop- 



