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CONTENTS~«o«i. 



Philippines : A New Aphid injurious to Rice 

 Porto Rico : Miscellaneous Pests in 191&-19 

 Russia 



Russia 



Russia 



Russia 



Russia 



Russia 



Russia 



Russia 



Russia 



Russia 



Russia 



Spain 



Spain 



Syria 



U.S.A. 



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PAGE 



342 



332 



The Re-organisation of Economic Entomology . . . . . . 327 



Miscellaneous Pests in 1920 327 



The Bionomics of Meligetkes aeneus on Cruciferous Crops . . 328 



Pests of Vegetables near Petrograd . . . . . . . . . . 329 



Measures against Insect Pests near Petrograd in 1918-20 . . 345, 347 349 



The Bionomics and Control of Plutella tnaculipennis .. . . 354 



Notes on Phaedon cochleariae .. . . . . . . 346, 350 



A Note on the Poplar Aphid, Schizoneura passerinii . . . . 346 



The Bionomics of Hyponomenta maiinellus . . . . . . 349 



Notes on A nthonomus pomorum . . . . . . . . . . 349 



Measures against Vegetable Pests . . . . , . . . . . 349 



Lyda hieroglyphica infesting Pines . . . . . . . . . . 367 



Measures agamst Olive Pests . . , . . . . . . . . . 368 



Eurytoma amygdali infesting Almonds 



New Parasitic Dryinids . . . . . . .... 



Experiments with Paradichlorobenzene against Aegeria exitiosa. 



Control of the Pear Thrips in New York 



A List of Apple Pests in New York 



The Pink Bollworm in Texas 



Measures against Orchard Pests in Indiana 



Insect Damage to Crops in Florida . . 



Natural Enemies of Scale Insects and Whiteflies in Florida 



Mealy-bugs and their Control in Florida 



361 

 321 

 325 

 325 

 326 

 326 

 331 

 333 

 333 

 334 



A Spray Schedule for Citrus in Florida . . . . . . . . 335 



Miscellaneous Pests in Michigan in 1918-19 . . . . . . 335 



Notes on the Wheat Joint-worm in Michigan . . . . . . 336 



Insect Pests in Indiana in 1919-20 337 



Biological Control of the Black Scale in California . . . . 339 



The Relation of Insects to the Black and Yellow Moulds of Maize 339 



Economic Insects recently observed in California . . . . . . 340 



Measures against the Thurberia Weevil in Arizona . . . . 34 1 



Toi^n* /ranciscano injurious to Apples in California .. .. 341 



The Pecan Nut Case Bearer, Acrobasis caryaevorella in Texas . . 350 

 The Problem of controlling the Codling Moth .. .. ..351 



The Trend of Horticultural Inspection . . . . . . . . 351 



Recent Work of the Federal Horticultural Board . . 351, 352 



An Outbreak of the Gipsy Moth in New Jersey . . . . . . 351 



The Value of Standardised Nursery Inspection . . . . . . 352 



Insect Pests in Greenhouses in Indiana . . . . . . . . 352 



Plant Quarantine Work in Florida . . . . . . . . . . 352 



The Operation of Quarantine Measures . . . . . . . . 352 



Experiments in Dusting against Insect Pests . . . . 352, 353 



A Trap for Etnpoa rosae . . . . . . . . . . . . 354 



Bark-beetles and their Enemies . . . . . . . . . - 356 



Legislation against Aleurocanthus woglumi . . . . . . . . 357 



Measures against Ci^rKi Pests in California. . .. .. ..371 



Insect Pests in Wisconsin in 1919-20 872 



Precautions against the Introduction of the European Com 



Borer into Wisconsin . . . . . . . . . . . . . . 372 



U.S.A. : Pe-sts of Raspberries and Blackberries in Wisconsin 373 



U.S.A. : Miscellaneous Pests in Kansas in 1918-19 . . . . . . . . 373 



U.S.A. : Dusting Experiments against Anthonomus grandis in Alabama . . 373 



U.S.A. : Measures against the Mexican Bean Beetle in Alabama . . . . 374 



U.S.A. : Insect Pests in Alabama in 1919-20 374.375 



U.S.A.: Scarcity of Pests of Japanese Clover in Tennessee .. .. .. 375 



U.S.A. : Hymenopterous Parasites of Coccidak in Michigan . . . . 375 



West Indies: Insect Pests in Barbados in 1919-20 322 



West Indies : Measures against the Pink Bollworm . . . . . . 324 



West Indies : Legislation against Cotton Pests in Barbados . - . . 330 



West Indies : Trapping Cotton Stainers . . . . . . . . . . 326 



The Coleoptera of Europe (Review) 357 



Studies of Natural Immunity in Insects . . . . . . . . 329, 330 



New Protozoa found in Termites . . . , . , . . . . . . 330 



Illustrations in Relation to the Development of Economic Entomology . . 337 



White Arsenic as an Insecticide . . . . . . . . . . . . 358 



Chalcid Parasites of Coccids and Aleurodids . . . . . . . . . . 368 



Legislation : Against Insect Pests in Australia . . . • . . . . 354 



Legislation : Against Cotton Pests in Barbados . . . . . . . . 330 



Legislation : Against the Introduction of Aleurocatithus woglumi into 



U.S.A 357 



