70 THE REPORT OF THE No. 36 



In the grapery which we sprayed, three applications of sweetened arsenate 

 of lead gave almost perfect protection. The chafer injury was so trifling that we 

 did not attempt to express it in terms of a percentage. 



Sweet cherry trees, one-year-old strawberry patches, cabbages and peppers 

 were also sprayed with sweetened arsenate of lead, and in all cases the spray 

 gave good results. 



Other Spray Materials. Three applications of bordeaux mixture with 

 an excess of lime (4-25-40) proved to be useless as a deterrent. Practically all 

 the blossoms were destroyed on the row sprayed with this material. Calcium 

 arsenate (three lbs. powder, five lbs. hydrated lime, 40 gallons), was quite in- 

 effective in protecting the crop. A 10 per cent, nicotine sulphate dust was 

 also tested, but failed to kill the beetles. 



Recommendations for Control 



Our present recommendations for the control of the rose chafer are as 

 follows: 



In affected districts an organized effort should be made to reduce waste 

 sandy land to a minimum. As much of the land as possible should be worked, 

 and, if possible, fields should not be left in grass for longer than one season. 



As much as possible of the land surrounding the vineyards should be kept 

 in cultivated crops, such as corn and potatoes. 



Old neglected fence rows should be broken up. 



All breeding places should be ploughed and cultivated frequently at the time 

 the chafers are in the pupal stage, that is, from about May 20th to June 10th. 



Grape vines, sweet cherry trees and one-year-old strawberry patches should 

 be sprayed as soon as the beetles attack them with arsenate of lead powder 

 four lbs., cheap molasses one gallon, water 40 gallons. Especially in the case 

 of graperies one, two or more extra applications may be necessary, the number 

 of sprays of course depending on the severity of the infestation and also on the 

 weather conditions, in view of the fact that heavy rains wash the material off. 

 We have no information relative to the value of this spray as a means of pro- 

 tecting apples. 



OVIPOSITION OF HYPERA PUNCTATA 



H. F. Hudson and A. A. Wood, Dominion Entomological Laboratory, 



Strathroy 



During our preliminary studies on the life history of the clover leaf weevil, the 

 opportunity to study the act of oviposition has occasionally occurred. So far as 

 the present writers are aware the published data on this rather interesting point is 

 somewhat meagre, and these observations may add something to our general 

 knowledge. They have all been made under insectary conditions, at different 

 hours of the day and night, and may to a certain extent coincide with conditions 

 as met with in the field. In choosing a suitable location for egg deposition un- 

 usual care is exercised. The fresh succulent petioles with a more or less solid 

 stem are never chosen unless to deposit a mass on the side of the stem. A petiole 

 that is mature or slightly withered, having a partially hollow centre, is usually 

 selected. Generally eggs are introduced into the petiole through a very small 

 puncture, just above the sheath, or about % ^ ncn De l° w the leaflets, although 

 they may be placed anywhere along the stem. Large masses may be laid out- 

 side on the petiole or in the sheath; in the latter case a small puncture is made 



