THE CANADIAN ENTOMOLOGIST. 283 



succeeded in raising from larvae obtained in Oswego County, N. Y.; it 

 bred in the roots and stems of Alnus mania. Mr. Schwarz stated that 

 he had taken the moth, near Marquette, Lake Superior, on July 29th, this 

 year. Mr. Smith considered it to be quite generally distributed, breeding 

 in oak, willow and poplar. Mr. H. Osborn read a note on the occurrence 

 of Cicada rimosa Say., in Iowa. 



Prof. O. S. Westcott, related the occurence of a large gathering of 

 butterflies about the carcass of a dead dog at Port Arthur, in June last ; 

 one hundred and ten specimens were counted, chiefly consisting of D. 

 archippus and some L. arthemis, Colias and Melitcea. In the same 

 locality he captured, July 20 to 23. nineteen examples of Melitcea ; of 

 these one was Nycteis, and seventeen T/iaros — eight of the form Afarcia, 

 and nine Morpheus. He next gave an interesting account of the numbers 

 of Lachnosterna fusca and gibbosa taken at Maywood, 111., by means of 

 a trap attached to a street-lamp, during the months of May and June, 

 1887 an d 1888. He also gave a list of 1192 specimens belonging to 65 

 species captured in his trap on the night of June 13th, 1888 ; of these 730 

 were Agonoderus comma and 204 Lachnosterna gibbosa. 



Mr. Howard gave an account of some recent experiments made under 

 Dr. Riley's direction at Washington, with kerosene emulsion as a remedy 

 for white grubs, the larvae of Allorhina nitida. He stated that the grass 

 had died over large areas of the affected lawn, and the soil was full of the 

 grubs. The affected portion was treated with kerosene emulsion diluted 

 fifteen times with water and applied with an ordinary watering-pot ; the 

 ground was then kept saturated for some days with ordinary water from a 

 hose. A month afterwards, on digging into the part treated, the grubs 

 were found to have descended sixteen inches into the soil, and all had 

 died. In the untreated parts the larvae were all alive and only two or 

 three inches below the surface. There was no injurious effect upon the 

 grass, even when the emulsion was only diluted half as much. He con- 

 sidered that the experiment was entirely successful. In the discussion 

 that followed, it was evident that this remedy is much too expensive for 

 adoption on a large scale, and could only be of practical use on a lawn 

 or plot of land of special value. Dr. Peabody stated that Prof. Forbes 

 had found the kerosene emulsion entirely successful against the common 

 white-grub (Lachnosterna); but as its application cost at the rate of about 

 $100 per acre, it was far too expensive for ordinary purposes. 



