168 THE CANADIAN ENTOMOLOGIST. 



The report having been adopted, the election of officers took place, 

 with the following result : — 



G. J- Bowles, President ; W. Couper, Vice-President ; F. B. Caulfield, 

 Secretary-Treasurer; J. G. Jack, H. H. Lyman, W. Shaw, H. Graves, 

 Council. 



A very pleasant hour was then spent in examining the President's col- 

 lection of Lepidoptera, and the scarce and valuable illustrated entomo- 

 logical works in his library. 



Geo. Jno. Bowles, Secretary. 



ORGYIA LEUCOSTIGMA, Smith. 



BY FREDERICK CLARKSON, NEW YORK CITY. 



The foliage of the trees in this city is undergoing spoliation by the 

 larvge of this moth. Many of the trees are entirely denuded of their 

 leaves, particularly the Silver-leaf Poplar, the Ailanthus alone escaping 

 attack. The writer suggested to the authorities last spring that hand- 

 picking of such cocoons as contained the deposit of ova was the only sure 

 way of exterminating these insects. Had such service been rendered the 

 trees at that time, this damaging visitation would have been prevented. 

 There is good reason to believe, however, that what the authorities have 

 failed to do, a young army of parasites, " Pimpla," which have put in an 

 appearance during the last fortnight, are now actively, attempting, and we 

 shall probably be rid of this moth another year. The ova commenced to 

 hatch out about the 25th of May, and the larvae began to assume the pupa 

 form about the 21st of June ; ten days thereafter the imago was discovered 

 depositing ova. Out of twelve cocoons gathered on the 15th of July, four 

 yielded the parasite already referred to. I would note here in connection 

 with this parasite a circumstance very commonly observed among the 

 Lepidoptera. I discovered two ^ parasites upon a cocoon containing the 

 pupa of this moth. I drove them away several times, but they as fre- 

 quently returned. I finally captured them, and placed them together with 

 the cocoon in my collecting bottle. Before I had returned to my residence 

 a ^ Pimpla had emerged from the cocoon and was busily employed in 

 expanding her wings. I also noticed that this parasite deposits its ova 



