CONTENTS— conf. 



PAGE 



U.S.A. : Insects liable to be mistaken for the European Corn Borer 



in Ohio 286 



U.S.A. : Spraying Machinery for Citrus G-roves . . . . _. . 292 

 U. S.A. : The Importance of Quarantine against Insect Pests in 



Florida . . . • • • • • • • * • • • • • ^^^ 



U.S.A. : The Necessity for Compulsory Control of Insect Pests in 



Florida . . . . • • • • • • • • * • • • ^^^ 



U.S.A. : The Value of Spraying against Citrus Pests in Florida . . 293 



U.S.A. : The Situation in respect of leery a purchasi in Florida . . 294 



U.S.A. : The Utilisation of Beneficial Insects and Fungi m Florida 294 



U.S.A. : New Hymenopterous Parasites 295 



U.S.A. : Buprestids infesting Forest Trees . . .... . . 295 



U.S.A. : A Scale infesting Orchids under Glass in Colorado . . . . 295 



U.S.A.: Pests of Field Peas in Idaho 300 



U.S.A. : Pests of Rice and their Control . . . . • . • • 300 



U.S.A. : Notes on Miscellaneous Nursery Insects in New Jersey . . 300 



U.S.A. : Dusting Machinery for Cotton Boll Weevil Control . . 302 



U.S.A. : Measures against Aegeria exitiosa in Georgia . . . . 302 



USA.: Observations on the Genitalia of Lachnosterna . . . . 302 

 USA- The Effect of Winter Weather on Insect Pests in New 



York 



303 



U.S.A. : The CodUog Moth Problem in the Ozarks 304 



U.S.A. : Experiences with the Codling Moth in New Jersey . . . . 305 



U.S.A.: Forms of the Oyster-Shell Scale in Illinois 305 



U.S.A.: Federal Plant Quarantine Work .. •• •• •• JJ^ 



U.S.A. : Pests intercepted on imported Nursery Stock m 1919 . . 6W 

 USA' The Green Japanese Beetle Problem in New Jersey 307, 30H 

 u!s.A. : The Use of Sodium Cyanide for the Control of the Peach- 



Tieo Borer •• :• ^ 'A, '^ ^ '■' 



U.S.A. : A Comparison of Dusting and Spraying for Cherry Pests in 



Pennsylvania .. ••,,;•.•,; V ^x" " oin 



USA.- The Spread of the Oriental Moth m Massachusetts . . 310 



U.S.A.: The Organisation of a Special Spray Service in New York 



^^-Q-fA •• •• •• •• *• olU 



U S.A. :' The Relation of Empo'asca mail to Tipburn of Potatoes ..311,312 



USA.: Crambus praefecUllus infesting Maize in Connecticut . . 311 



U.S.A. : The Strawberry Root-Worm injuring Roses m Greenhouses .312 



U.S.A: : Poison Baits for Grasshoppers .. 313 



U.S.A. : The Campaign against Grasshoppers m Kansas . . . . rfl* 



U.S.A.: Studies of the Oviposition of the Corn Ear Worm, . .. 314 



USA.: Precautions proposed against the Spread of Foreign Pests 315 



U.S.A.: Control of the Cirophilm Mealy-Bug in CaUforma .. 316 



USA • The Quince Curculio and its Conti-ol m Western New York 317 



U S.A. : The Biological Control of Mealy-Bugs in Califorma . . 318 



U.o.A. : Pests intercepted in Quarantine in Cahforma . . . . 319 



West Indies : Insect Pests in Antigua in 1918-19 ^yo 



Studies on the Wilt Disease of Bom&T/xmon ^oj 



Notes on the Classification of Coccids ^^^ 



Termites and Terraitophiles . . . . *2^ 



New Species of PityopUhorus from Colorado ^ou 



Methods of Cultivating Vines against Phylloxera .... .. ^b/ 



The Relation of Ants to Man and their Economic Importance . . .267 

 SuTcrestions for Representing the Life-histories of Insects by means 



of Symbols •• •• .• • •• •• ^°? 



An Apparatus for examining Biological Phenomena m Insects . . ^n 



A Alonograph of the Fungi infesting Insects . . • • „ ♦ • ' ' tit 



Studies on Rhinoceros Beetles as Pests of the Coconut Palm . . g5 



Notes on the Biochmatic Law . . . . ^' 



The Compositions of various Lead Arsenates • ^^| 



A Drv Form of Lime- Sulphur • V-r. -I'n j" 



Insect Pests and Plant Diseases in the Vegetable and Frmt Garden 



(Review) 



