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CONTENTS. 



Africa, East : New Bark-beetles . . . . . . . . • • • • ^^1 



Africa, South : Notes on Miscellaneous Pests . . . . • • ■ • ^23 



Africa, West : Miscellaneous Pests in Nigeria in 1920-21 .. .• 124 



Algeria : The Foodplants of Sesamia vuteria . . . . ■ • • • ^^^ 



America, North : Pests of Ornamental Trees .. .. •• •• HO 



America, North : Notes on the Aeolothripidak . . • • • ■ 125 



America, North : The Supply of Arsenic for Insecticides . . . • 161 



Argentina : Measures against Aegeria exitiosa . . . . • • • • ^09 



Argentina: The Preparation of Insecticides .. .. •• •• l^^ 



Australia : Measures against Cydia pomonella . . . . ■ ■ ■ • 124 



Australia : Plant Pest Legislation . . . . . • • • • • 130 



Australia : Notes on Sugar-cane Pests in Queensland . . . . • • 164 



Brazil : Reports on Miscellaneous Pests . . . . . . • • 146, 147 



Brazil : A Scale attacking the Mate Shrub 147 



British Isles : The Bionomics of the Carrot Fly {Psila rosae) . . . . 105 



British Isles : Notes on Insects associated with stored Grain, etc., 



and their parasites . . . . . . • • • • • • • • J^^ 



British Isles : A new Thrips . . . . . . • • • • ■ • J^7 



British Isles : The Value of Paraffin against the Carrot Fly . . . . 108 



British Isles : Measures against Red Spider under Glass . . . • HO 



Canada : The Life-history of Apateticus crocatus in British Columbia 125 



Canada : A Lepidopterous Pest of Beehives . . . . • • • • 125 



Canada: Notes on Locusts and other Orthoptera in British Columbia 125 



Canada : A Review of Applied Entomology in British Columbia . . 126 



Canada: Insects imported into British Columbia from the Orient .. 126 



Canada: Measures against Tent Caterpillars in British Columbia .. 126 



Canada : Insect Pests in Nova Scotia in 1920 . . . . • . • • 130 



Canada : Miscellaneous Pests in Alberta in 1920 . . . . • • 139 



Canada : The Bionomics of Gypona octolineata infesting Apples in 



Nova Scotia J^J 



Canada : Dusting Experiments in Nova Scotia . . . . • • • • 161 



Canada : Notes on Parasities of Hyphantria cunea in Nova Scotia 162, 163 



Canada : The Spruce Bud-worm Survey in New Brunswick . . . . 162 



Canada : Experiments against the Cabbage Maggot . . . . • • 163 



Canada : The Brown-tail Moth Situation in Nova Scotia . . . • 163 



Ceylon : Notes on Insect Pests . . . . . . • • •• • • 1 10 



Ceylon : Legislation against Plant Pests . . . . • • 129, 130 



Ceylon : Miscellaneous Pests in 1920 '^^' ^na 



Dutch East Indies : Pests and Diseases of Tobacco in Java . . 108, 109 



Dutch East Indies : Palm Oil Soap for Sprays . . . . ■ • • • 109 



Dutch East Indies : A Parasite of the Cacao Moth . . . . • • 127 



Egypt : Measures against the Pink BoUworm . . . . . . • • 167 



Europe : Notes on the Feeding Habits of young Adults of Scolytid 



Beetles \\^ 



France: Coleopterous Pests of young Vines 110 



France: Notes on the Brown- tail Moth .. .. .. •• •• HI 



France: Insect Pests of Antirrhinum .. .. •• •• •• H^ 



France: The S-pread oi Phthorimaea operculella .. .. •■ 119 



France: Damage to Woollen Materials by Gry//i(s ^o»JC5hcM5 .. 119 



France: Measures against A'^fiwro/oma wemora/is infesting Peaches .. 141 

 Germany : Conditions affecting the Proportion of the Sexes of Heterodera 



schachiii ;;,, !55 



Germany: The Testing of Insecticides ^41, i4- 



Germany : The Organisation of Applied Entomology 142 



Germany : Notes on the Nun Moth in Saxony . . . . • • • ■ 142 



Germany : The Beech Scale in Westphalia and its Control . . . . 143 



Germany : The Protection of Seedling Conifers from Insect Pests . . 143 



Germany : Notes on Hyponomeuta euonymdlus . . . . . . • • 144 



Germany : The Economic Importance of the Rape Weevil . . . • 144 



Germany : A Note on Sitodrepa panicea . . . . . . • • • • 145 



Germany: The Bionomics oi Ceuihorrhynchus quadridens .. ■■ 145 



Germany : Notes on Coleopterous Forest Pests . . . . • • • ■ 145 



Germany : The Danger of Imported Insect Pests 150 



Holland : Notes on the Habits of Blacus ruficornis 128 



Holland: Notes on OrcAes/es /a^t infesting Beeches .. .. ■• 128 



Honduras, British : Plant Pest Legislation . . . . • ■ • • 129 

 India: The Efiect of Irrigation on Aphids infesting Fruit-trees in 



Baluchistan 109 



India : Insect Pests in 1920-21 150 



India: Additions to a List of Crop Pests .. .. .. •• •• 151 



