124 



Morris (F.). Report on Insects for the Year: Division No. 4, Peter- 

 borough District. — oOtli Ann. Kept. Ent. Soc. Ontario. 1919, 

 Toronto. 1920, pp. 14-15. [Received 8th January 1921.] 



The insects recorded for the year inchide : Sapcrda ohliqua, on alder ; 

 and 5. piincticoUis and Pse}ioceriis supernotatus on Virginia creeper.. 



Noble (J. W.). Report on Insects for the Year : Division No. 5, 

 Essex District. — 50th A)ui. Kept. Ent. Soc. Ontario. 1919. Toronto. 

 1920, p. 15. [Received 8th January 1921.] 



Serious damage was caused by the Hessian fly [Mayetiola destructor'] 

 in wheat fields during 1919. Grasshoppers and crickets were particu- 

 larly abundant owing to the dry weather, and wireworms and cutworms 

 proved very destructive in the spring. The latter were successfully 

 controlled by poison bran mixture. 



The severe infestation of codling moth [Cydia potnonella] may also 

 be due to the exceptionally favourable season for insect development. 

 Damage by the plum curculio [Conotrachelus nenuphar], as well as 

 by the ,usual fruit and vegetable pests, is recorded. 



Spexcer (G. J.). Results of some Frehminary Experiments with 



Chloropicrin. — oOth Ann. Kept. Ent. Soc. Ontario, 1919. Toronto, 

 1920, pp. 18-21. [Received 8th January 1921.] 



Chloropicrin apparently cannot be used in greenhouses against 

 insect pests owing to its deadly effect on plants. To test the pene- 

 tration of the gas, a flower-pot about 7 in. deep, containing earth, 

 was exposed at night to a concentration of 8'7 oz. per 1,000 cubic 

 feet for 11|- hours, at a temperature of 54° F., with a relative humidity 

 of 88°. Though some of the millipedes contained in the soil at a depth 

 of H in. had gone deeper, all were dead 12 hours after the experiment. 

 The larvae and adults of Silvanns surinamensis (saw-toothed grain 

 beetle), Tenebrio molitor, Tribolium confusum (confused flour beetle), 

 Tcnebroides maiiritanicns (cadelle), CaJandra granaria (granary weevil) 

 and Plodia inter piinctella were all killed after exposure to a similar 

 concentration for about 25 hours, but 58 per cent, of the pupae of 

 Sitodrepa panicea (drug-store beetle) were still living. 



Moore (G. A.). Our Com.m.on Ceicopidae. — 50th Ann. Rept. Ent. 

 Soc. Ontario. 1919. Toronto. 1920, pp. 21-25. [Received 8th 

 January 1920.] 



A list of Canadian Cercopids is given, including : — Philaenus 

 lineaius. L. (lined spittle hopper), which feeds on timothy grass and 

 red top ; Aphrophora quadrinotata, Say, often found on grape vines ; 

 A. paralella. Say, on pine trees, in company with A. saratogcnsis, 

 L. ; and Lepyronia qnadrangidaris, Say (angulatcd froghopper), on 

 grasses, weeds and blackberry. 



Leopold ( — ). My Experience this Year in Dusting and Spraying 



(1919).— 5^/A Ann. Rcpt. Ent. Soc. Ontario, 1919, Toronto, 1920, 

 pp. 25-30. [Received 8th January 1921.] 



The object of the experiments described was to determine the action 

 of liquid lime-sulphur on apples in Ontario, as compared with that of 



