CONTENTS— c«N^. page 



Italy : The Bionomics and Control of Eriocampoides limacina . . . . 473 



Italy : Measures against Rhynchites betulae . . . . . , . . . . 473 



Italy : Coleopterous Pests of Trees . . . . 473 



Italy ; The Life-history of Platygaster dryomyiae . . 473 



Italy : Measures against Diaspis pentagona . . , . . . . . 503 



Italy : Notes and Observations on Agricultural Entomology {Review) . . 506 



Kamerun : Pests of stored Tobacco . . . . . . 516 



Luxemburg : The Second Generation of Vine Motlis . . 489 



Mauritius: Insect Pests in 1920 .. .. .. .. .. ,.511 



Mexico : The Bionomics and Control of Platyedra gossypiella . . 461, 462 



Mexico : Notes on Miscellaneous Pests . . . . . . . . . . 462 



Philippines : Measures against Insect Pests in 1920 . . . . 467 



Philippines : New Species of Psyllids . . . . . . . . 515 



Philippines : Notes on Termites . . . . . . . . 515 



Phillipines : Notes on Buprestids . . . . . . . . 515 



Philippines : Notes on Mango Pests 520 



Rumania : The Bionomics of Hoplocampa fulvicornis . . . . . . 463 



Russia : A Handbook of Practical Entomology (Review) . . . . 479 



Spain : Precautions against an Outbreak of Locusts . . . . . . 520 



Sudan : The Necessity for Precautions against Locusts . . . . . . 503 



Switzerland: Measures against Wireworms .. .. .. ..519 



Tonkin : The Bionomics and Parasites of Xylotrechus quadripes . . 508, 510 



Tunis : Measures against Locusts . . . . . . . . . . . . 491 



U.S.A. : Studies in the Biology of Anthonomus grandis . . . . 457 



U.S.A. : Bionomics of Phylloxera on Grapes in California . . . . . . 457 



U.S.A. : Notes on Anastatus semiflavidus in New Mexico . . . . . . 458 



U.S.A. : The Bionomics of three Jointworm Parasites . . . . . . 458 



U.S.A. : Measures against the Citrus-root Nematode in Florida . . . . 459 



U.S.A. : The Transmission of Potato Late Blight by Insects . . . . 460 



U.S.A. : Notes on the Larval and Pupal Stages of Xyloryctes satyrus . . 460 



U.S.A. : The Rearing of Anthomyiid Larvae on Artificial Media . . . . 460 



U.S.A. : The Plum Webspinning Sawfly in S. Dakota 460 



U.S.A. : Insect Pests in Idaho in 1920 460 



U.S.A. : Measures against the Alfalfa Weevil in Idaho . . . . . . 461 



U.S.A. : Measures against the Gipsy Moth in New Jersey . . . . . . 461 



U.S.A. : The Bionomics of Cyllene robiniae in Kentucky . . . . . . 467 



U.S.A. : The Larvae of the Coccinellidae . . . . . . . . . . 481 



U.S.A. : The Bionomics of Oecanthus nigricornis . . . . . . . . 482 



U.S.A. : Measures against Ants infesting Houses . . . . . . . . 482 



U.S.A. : Measures against Clothes Moths . . . . . . . . . . 483 



U.S.A. : Measures against the Large Willow Sawfly in S. Dakota . . . . 483 



U.S.A. : Measures against Lepidopterous Pests in S. Dakota . . . . 484 



U.S.A. : The Relation of Insects to Geranium Leaf Spot . . . . . . 492 



U.S.A. : A List of Halticine Beetles from Maryland . . . . . . 492 



U.S.A. : Measiires against Empoasca mali in Wisconsin . . . . . . 492 



U.S.A. : The Organisation of Measures against Insect Pests in Missouri . . 501 



U.S.A.: Measures against Mites on Ci/rMs in California .. .. .. 512 



U.S.A. : Measures against BrucAwi n</iwaMus in California ,. .. 513 



U.S.A. : Pests intercepted in Quarantine in California . . . . . . 514 



U.S.A. : The Bionomics of the Hawthorn Blossom Weevil {Anthonomus 



nebulosus) . . . . . . , . . . . . . . . . • . . 517 



Uruguay : The Introduction of Parasites of Eriosoma lanigerutn . . 518 



Uruguay : A Coccid Pest of Ct/fMs .. 518 



West Indies : Cotton Pests in St. Croix 463 



West Indies : Measures against the Pink BoUworm 481 



West Indies : Miscellaneous Pests in Grenada in 1920 504 



West Indies : Cacao and Pineapple Pests in Grenada .. .. .. 516 



Pests of Sugar-cane and their Control . . . . . . . . . . 464 



The Anatomy of Aphids . . . . . . . . . . , . 468 



Enchytraeid Enemies of Nematodes . . . . . . . . , . . . 470 



Notes on new Eriophyid Mites . . . . " . . . . . . . . 470 



Machines for the Treatment of Cotton Seed against Moths. . . . . . 474 



Methods of Using Nicotine in Insecticides . . . . , . . . . . 475 



Hydrocyanic Acid Gas against Insect Pests . . . . . . . . . . 485 



International Measures against Locusts . . . . . . . . . . 490 



Notes on new Thysanoptera . . . . . . . . . . 494 



A Review of Banana Pests in the Tropics . . . . . . . . . . 494 



The Parasites of the Meal Moth, Epkestia kUhniella 495 



Immunity Experiments on the Larvae of Galleria mellonella 500 



Notes on new Microlepidoptera . . . . . . . . 502 



Intercontinental Problems in Bioclimatics . . . . . . 506 



Lime-sulphur Solution t/crsws Dry Materials .. ..511 



Methods of Soil Sterilisation . . . , . . , . . . . . 515 



Insects and Human Welfare {Review) . . . . . . . . . . 518 



Legislation : Against imported Pests in Britain 



485. 486 



