108 THE REPORT OF THE No. 36 



were still to be found in the gum, but about 90 per cent, had emerged. The adults 

 were present, and flew out from the trees when disturbed or dropped as if dead to 

 the ground, where their yellowish brown color made them very difficult to distinguish 

 from the fallen staminate flowers. Three females and one male were placed in a 

 bottle along with two fresh new-growth twigs, and brought home. After a few 

 days eggs were laid near the base of the young leaf clusters, some separately and 

 some in very irregular clusters, one egg overlapping another shingle fashion. It is 

 doubtful whether in the open they would be laid in clusters. The eggs ware 

 cream-colored, flattened, or scale-like and oval in outline, about .5 mm. long by A 

 mm. wide. They darken before hatching. Jack Pine {Finns hanksiana) {divari- 

 cata) alone was attacked. (See figure of moth and work of larva.) 



The Willow and Poplir Cueculio {Cri/ptorhynchus lapathi). 



Once more we have found adults of this species in the spring in the nurseries. 

 The excessively wet weather prevented cur watching them to see wliether they 

 laid any eggs. The insect has been reported from the following places in addition 

 to those given in my last year's account of it : Port Elgin in a nursery, Beachville, 

 Strathroy and^ake Simcoe district. Mr. George Matieu, has- also informed me 

 that he has taken it on JPopuIus deltoides in a nursery at Berthierville in Quebec. 



Fruit-tree Leaf-roller (ToHrix {Cacoeciu) argyrospila) . 



Up to the present time there have been no reports of the presence of this pest 

 in any other orchards than those mentioned in my paper on Apple Leaf-rollers last 

 year. I visited two of these orchards this year in June and July. In the orchard 

 near Hamilton, the insect seems to have largely disappeared, in the other orchard 

 — ^the large block of 60 acres in Norfolk County — it still persists, and has now 

 spread throughout all the trees. I have had no chance to visit this orchard since 

 the eggs were laid, and so form an opinion on the amount of destruction the insect 

 is likely to do next year. The foliage in the orchard this year was kept heavily 

 covered with nearly double strength of arsenicals, but the result showed clearly 

 that arsenicals alone would not control this pest. Nine or ten acres of spy trees 

 which formed the worst infested part last year, were sprayed this spring before 

 the buds burst with Scalecide, and were noticeably freer from injury than the 

 unsprayed parts. The owner believes that in spite of the cost, he will have to use 

 Scalecide on the whole orchard next spring. In the orchard near Hamilton, the 

 worst infested block was also sprayed with Scalecide, and apparently this was the 

 reason for the great decrease there in the number of the larvae. 



The Oblique-banded Leaf-roller (Tortrix (Cacoecia) rosaceana). 



The following additional data was obtained on this pest: 



1. The number of eggs that may be laid by a single female is much greater 

 than we had suspected. One female laid one large and two small clusters, or a 

 little over 300 eggs in all. The highest number of eggs we found in a single cluster 

 was 175; the average seemed to be about 100. 



2. This species in Ontario is partly single brooded and partly double brooded. 

 lii our cages all the larva) reared from the eggs laid on leaves in June and early 

 July fed for a short time on the foliage, skeletonizing it very much in the way the 

 Pear Slug skeletonizes pear and cherry leaves, and then while still not farther 



