527 



and of the adult insects, and the early stages are compared with those 

 of other species. All the species hibernate in the egg-stage on the trees 

 and the eggs of all begin to hatch soon after the buds are beginning to 

 burst. The first adult of C. rosacexina was seen on 10th June, those of 

 C. argyrospila appearing about a fortnight, and those of C. semiferana 

 three weeks later. C. rosaceana and C. semiferana seem to pupate 

 almost invariably on the leaves, but fully half of the individuals of 

 C. cn-gi/rospila pupated on weeds or in the grass. Apparently not more 

 than 5 per cent, of tiie larvae were destroyed by parasites, and disease 

 evidently played a greater part in control. Miscible oil sprays are the 

 only ones giving really satisfactory results and should be used against 

 the eggs. The application must be very thorough and should be made 

 just when the leaf -buds are almost ready to burst, but so as to be 

 completed before they have done so. Pruning renders spraying easier, 

 cheaper and more effective. Autumn spraying seems to be useless, 

 according to tests made in August against the eggs of C. argyrospila 

 and C. semiferana. Many larvae and pupae may be destroyed by 

 allowing fowls to run in the orchard and late cultivation will also kill 

 numbers of them. Adults from pupae buried 2 inches deep by Mr. 

 Crawford were found to be unable to emerge. 



Treherne (R. C). a Preliminary List of Parasitic Insects known 

 to occur in Canada. — 46th Ann. Repl. Entom. Soc. Ontario, IQlo, 

 Toronto, 191G, pp. 178-193. [Received 10th October 1916.] 



This list includes the parasites of some of the more common pests in 

 Canada, but does not claim to be complete, and it is hoped to supple- 

 ment it from time to time. As a general rule, only the names of 

 parasites recorded as definitely determined species are included. 



OsBORN (H.) & Drake (C. J.). The Tingitoidea of Ohio.— 0/m'o State 

 University Bull.. Columbus, xx, no. H5, .lune 1916, 31 pp. (217-251), 

 11 figs., 2 plates. [Received 12th October 1916.] 



This systematic paper on the lace-bugs of Ohio records 31 species, 

 some of which are described as new. 



GossARD (H. A.). The Clover LeatTyer {Ancylis angulifasciana, Zeller). 

 — Mthly. Bull. Ohio Agric. Expt. Sta., Wooster, i, no. 6, June 1916, 

 pp. 181-185, 2 figs. [Received 12th October 1916.] 



• The information in this paper has already been abstracted [see this 

 Revieiv, Ser. A, iv, pp. 188, 487J. 



Whelan (D. B.). The Bean-maggot in 1915. — Michigan Agric. ColU 

 Expt. Sta., East Lansing, Entom. Dept. Circ. no. 28, February 

 1916, 4 pp. [Received r2th October 1916.] 



During the sunmier of 1915, the bean- maggot [Chorlophilafusciceps ?] 

 caused more damage than ever before. In the past, the injury done 

 by this species has often been confused with that of the onion maggot 

 [Hylemyia antiqua] and the cabbage maggot [Chortophila brassicae]. 

 The fly usually oviposits on the stems of plants just coming 

 through the soil or on decaying vegetable matter, and the maggots 



