CONTENTS. 



PAGE 



Dried Fruit Insects and their Control in California . . . . . . 425 



The Susceptibility of Crops to Wireworms in Britain . . . . 425 



Experiments in Controlling Eriophyes ribis in Britain . . . . 425 



Insect Pests in newly ploughed Grasslands in Britain . . . . 426 



The Bionomics of the Common Earwig, Forficula auricularia, in 



Britain 426 



Measures against Locusts in Spain . . . . . . . . . . 427 



Insect Pests in Argentina in 1917 . . . . . . . . . . 428 



Three new Coccids and their Parasites from Argentina . . . . 428 



New parasitic Hymenoptera from Chile . . . . . . . . 428 



A Mite infesting /Sc^istocerca j)ara«.e«8is in Chile .. .. .. 4£8 



Insect Pests in Chile 429 



Beneiicial Predaceous Insects in Chile . . . . . . . . 429 



Notes on the Spring Generation of Pieris brassicae in France . . 429 

 The Laticiferous System of Hevea brasiliensis and its Protective 



Function 429 



The Preservation of Timber from Insects . . . . . . . . 430 



Psylla soTbi on Mountain Ash in Britain . . . . . . . . 430 



Pipunculid and Stylopid Parasites of Homoptera in Britain . . 431 



The Occurrence of Phorbia piUpyga in Britain . . . . . . 431 



Lophocateres pusillus infesting Dried Beans in Britain . . . . 431 



Parasites of Sawflies in Britain. . .. .. .. .. .. 431 



DonaHa clavipes attacking Aphids in Britain . . . . . . 431 



Insect Pests in Yorkshire in 1918 . . . . . . . . . . 431 



Eriocampoides annuUpes in Orchards in Britain . . . . . . 432 



A New Species of Lepidiota from Northern Queensland . . . . 432 



Flea-beetles and Wireworms in England . . . . . . . . 432 



The Effect of Potassium Cyanide on Trees . . . . . . . . 433 



The Importance of Economic Entomology to Human WeKare . . 433 



The Yellow Clothes Moth in U.S.A 433 



Nezara viridula and Kernel Spot Disease of Pecans in Georgia . . 433 



The Protection of Stored Cereals from Insects in U.S.A. . . . . 434 



Notes on Xylebor^is fomicatus in Ceylon . . . . . . . . 434 



The Bionomics of Homona coffearia in Ceylon . . . . . . 435 



Agricultural Pests in Britain m 1917 . . . . . . . . . . 435 



On the Existence of Immunity Principles in Insects . . . . 437 



Notes on Trioza alacris in New Jersey . . . . . . . . 437 



The Effect of Cold on Silkworms suffering from Flacherie . . , . 437 



The Discovery of a New Food-plant for Silkworms in Japan , . 438 



A Thrips injurious to Vines in Cyrenaica. . . . . . . . . 438 



Spraying Formulae for Garden and Orchard Insects in U.S.A. . . 438 



The Value of early Threshing against Sitotroga cerealella in U.S.A. 438 



The Control of Pests of Cereals in Ships by Steam . . . . . . 439 



Remedies for the Turnip Sawfly, Athalia fiacca, in Southern 



Rhodesia .... . . 439 



The Determination of Arsenic in Insecticides by Potassium lodate 440 



Popilia japonica, a recently introduced Japanese Pest in New Jersey 440 



Cryptokermes brasiliensis redescribed from Mexico . . . . . . 440 



New Species of Microlepidoptera in North America . . . . 440 



The Alternate Host of the Black Cherry Aphis {Myzus cerasi) in 



U.S.A 441 



A List of the Cerambycidae of California . . . . . . . . 441 



Pests of Vegetables and Fruit Trees in France . . . . . . 441 



Note on the Damage caused by the Pine-shoot Moth in France . . 442 



The Presence of Stephanitis rhadodendri in France . . . . . . 443 



Observations on the Saccharomycetes of Eulecanium persicae . . 443 



Notes on New Chalcids . . . . . . . . . . . . . . 443 



A New Mite parasitic on Locusts in Apulia . . 443 



A List of One Hundred New Acari . . . . . . . . . . 443 



Insect Pests in Spain . . . . . . . . . . . . . . 444 



The Problem of Dealing with Pecti/nophora gossypiella in Brazil . . 444 



The Life- History and Control of Euxoa segetum in Mecklenburg . . 444 



Pests of Rubber in Java 445 & 446 



