CONTENTS. 



PAGE. 



Algeria : Fruit Tree Pests . . . . . . . . . . . • 485 



America, North : The Leaf -hoppers of the Genus Gypona . . 480 



Argentina: Insect Pests in 1917-18. . .. .. .. .. 501 



Asia : New Weevils of Economic Importance . . . . . . 489 



Australia: The Problem of eradicating the Prickly Pear .. 481 



Australia : A New Scale-Insect attacking St. Johns Wort . . 485 



Balkans : Insects infesting Picea omorica . . . . . . . . 452 



Bohemia : The Life- History of Parasetigena segregata . . 498, 499 



Bohemia : Xyleborus xylographus infesting Apples . . . . 499 



Brazil : Notes on the Bionomics of Aphids . . . . . • 486 



Brazil : Euscepes batatae infesting Sweet Potatoes . . . . . . 488 



Brazil : The Pink Bollworm 488 



Britain : Measures against TyUnchus devastatrix infesting Red 



Clover 441 



Britain: Agricultural Pests in 1918 442 



Britain : Insect Pests found on the Sea Buckthorn . . • . 444 



Britain : The Presence of Lygaeonematus wesmaeli in Yorkshire . . 484 



Britain : Pests of Common Vegetables . . . . . . . ■ 489 



British Guiana : Notes on Coleoptera of Economic Importance. . 484 



British Guiana : An Invasion of Locusts in 1917 . . . . . . 491 



Canada : Kaliosysphinga ulmi and its Control . . . . . . 470 



Canada : Notes on Bhagoletis pomonella . . . . . . . . 470 



Canada : Insect Pests in British Columbia in 1918 . . . . 479 



Canada : Agrihis anxius infesting Birches in Quebec . . . . 504 



Ceylon: Insect Pests in 1918 497,498 



Denmark : Agricultural Pests in 1915-1917 . . 445, 446, 447 



Denmark : Insect Pests of Gardens and Orchards in 1916-17 . . 447 

 Denmark : The Relation of Tachinids to their Hosts . . 450, 451 



Denmark : Paratyphus in Honey Bees . . . . . . . • 451 



Denmark : The Use of Quassia against Eybernia defoliaria . . 469 

 Egypt : The Effects of the Pink BoUworm on the Yield of Cotton 



Seed and Lint 489 



Finland : Measures against Hyponomeuta maUnellus . . . . 468 



I INLAND : Notes on Thrips injurious to Cereals, etc. . . . . 468 



France : Miscellaneous Insect Pests in 1916 & 1917 . . 455, 462, 467 



France : Notes on Coleopterous Pests . . . . . . • • 456 



France : Experiments against Vine-moths . . . . 457, 453, 467, 501 



France : Notes on Root- infesting Aphids . . . . . . . ■ 458 



France : Notes on Fungi infesting Insects . . . . . . . • 460 



France : Notes on Crioceris asparagi and its Parasites . . . . 461 



France : Experiments with Arsenicals against Cydia pomonella 



462, 463, 464 



France : The Use of Arsenicals against SparganoiMs pilleriana. . 464 

 France: The Bionomics and Control of Oiiorrhyvr^^^'- --'■I'^atus 



in Vineyards . . . . . • • • • • ■ • 465 



France : Notes on Birds Beneficial in Vineyards . . . . 466 



France : Infestation of Peas by Heterodera schachtii . ■ ■ ■ 467 



France : The Occurrence of PhtJiorimaea operculella . . . ■ 486 



France : Experiments with Bacteria on Lepidopterous Larvae . . 486 



France : A New Cynipid Parasite of Aphids . . . . . • 487 



France : Measures against Eriosoma lanigerum . . . . 487 



France: StephcmitispyriinicstingFTmt Trees .. 500 



Germany : Parasites of Forest Pests . . . . 452 



Germany : The Organisation of Applied Entomology 453 



Germany : An Outbreak of BasyrUra pvdibunda 454 



Germany : Pests of Forage Grasses . . . • 455 



Hawaii : Pests intercepted in Quarantine .... 485 

 Holland: Insect Pests in 1915 .. •• ..443 

 India: The Effect of Meteorological Condi -.i.n .. ov,... ,„ 



Bengal .. *83 



India : Insect Pests in Assam in 1918-19 . . 492 



Italy : Measxires against the Principal Inseot Pests 455 



