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CONTENTS— «<jn/, page 



Holland : Notes on Pests of Elms 386 



Holland : Notes on the Beech Scale, Cryptococcus fagi 386 



India : Notes on Helopeltis on Tea . . . . . . . . . . 415 



India : New Gall-midges infesting Grasses . . . . 415 



Italy : Notes on Vine Pests . . . . 379 



Italy : The Control of Dacus oleae . . . . . . 404 



Italy : Banding against Cheimatobia brumata . . 404 



Italy : A Bug attacking Silkworms . . ... . . • . . . • • 404 



Mexico : Calcium Arsenate against Avthonomus grandis . . . . . . 389 



Philippines : A Bibliography of Insect Pests . . . . . . 383 



Philippines : Notes on Rice Pests . . . . . . . . . . • • 393 



Spain : Pests of Wheat and Vines . . . . . . . . . . . . 399 



Switzerland : The Value of Pyrethmm against Vine Moths . . 399 



Switzerland : Measures against Tipula oleracea . . . . . . . . 399 



Switzerland : Measures against Enosowa /am'geruw ^''•''P- . . .. .. 401 



U.S.A. : Notes on Cranberry and other Pests in Washington . . 378, 379 



U.S.A. : The Identity of Eutettix osborni with a European Leafhopper . . 379 



U.S.A. : A New Chalcid Parasite of Trachelus tabidus .. .. .. 379 



U.S.A. : The Bionomics of Blastophaga grossorum in Figs in California . . 379 



U.S.A. : The Protection of Vineyards from Phylloxera in California . . 379 



U.S.A. : Scale Insects on Deciduous Fruit Trees in California . . . . 380 



U.S.A. : The Bionomics and Control of the Pear Thrips in California . . 380 



U.S.A. : Agricultural Pests in California in 1919-20 380 



U.S.A. : Notes on Persimmon Pests in California . . . . . . . . 381 



U.S.A. : Service and Regulatory Announcements . . 388 



U.S.A. : Pests intercepted in Bulbs in Virginia . . . . . . . . 389 



U.S.A. : Lucerne Pests in Virginia . . . . . . . . . . . . 389 



U.S.A. : The Effects of Irrigation on Pemphigus betae . . . . . . 389 



U.S.A. : Nicotine Sulphate in a Dust Carrier against Insects . . . . 389 



U.S.A. : The Beet Leaf Beetle and its Control 390 



U.S.A. : The Bionomics of Dendrociovus frontalis infesting Pines . . . . 390 



U.S.A. : The Bionomics of Recuruaria milleri infesting Pinus murrayana 391 



U.S.A. : A List of the Principal Insect Enemies of Sugar-beet . . . . 392 



U.S.A. : Mezisures against Orchard Pests in Indiana . . . . . . 396 



U.S.A. : Notes on the Coccidae of Indiana . . . . . . . . . . 396 



U.S.A. : Eutettix tenella and its Relation to Curly Leaf of Beet . . . . 401 



U.S.A. : Precautions against the European Com Borer in Michigan . . 401 



U.S.A. : The Pink BoUworm Conference at Washington . . . . . . 403 



U.S.A. : Miscellaneous Pests in Arizona 1918 and 1919 . . . . 405. 407 



U.S.A. : Pests intercepted in Quarantine in Arizona . . . . . . 408 



U.S.A. : Mineola indiginella attacking Cotoneaster . . . . . . . . 409 



U.S.A. : The Bionomics and Control of Diatraea zeacolella in North 



Carolina .. .. .. .. .. .. .. .. .. 415 



U.S.A.: Diseases and Pests of Honey Bees .. .. .. .. ..416 



West Indies : Insect Pests in St. Kitts-Nevis in 1919-20 383 



West Indies : Sugar-cane Pests in Guadeloupe . . . . . . . . 399 



West Indies : Measures against Miscellaneous Pests in Porto Rico 399, 400 



West Indies : Pink BoUworm Notes 400 



West Indies : Cotton and other Pests in St. Vincent - 413 



West Indies : Legislation against Insect Pests in St. Vincent . . . . 413 



West Indies : A Report on Sugar-cane Pests in Barbados . . . . 414 



The Relation of Insects to Mosaic Disease of Plants . . . . . . 382 



The Native Country of the Common House Cricket . . . . . . 382 



White Arsenic as an Insecticide in Bordeaux Mixture . . . . . . 385 



Insect Pests of Farm, Garden and Orchard (Review) . . . . . . 396 



Chloropicrin as an Insecticide . . . . . . . . . . . . 397 



The Relative Value of Chemicals used against Insects . . . . . . 397 



A New Combination of Lime and Sulphur as an Insecticide . . . . 408 



Natural and Acquired Immunity in Galleria mellonella . . . . . . 416 



Legislation : Against Pyrausta nubilalis in Canada . . . . 413 



Legislation : Against Insect Pests in St. Vincent 413 



