CONTENTS— co«^ page 



Mesopotamia : Notes on Lepidopterous Pests . . . . . . . . 219 



Morocco : Sesamia vuieria infesting Cereals . . . . . . . . 265 



Morocco : Insect Pests of Agriculture . . . . . . . . . . 268 



New Zealand : The Naturalisation of Animals and Plants (Review) . . 251 



Philippines : Insects concerned in the Pollination of Coconuts . . , . 230 



Philippines : Insect Pests of the Siamese Pomelo . . . . . . 276 



Russia : A List of Literature on Applied Entomology . . . . . • 222 



Russia : A Method of eliminating Pea Seeds infested with Bruchus pisorum 222 



Russia : Economic Entomology in the South-East . . . . . . 223 



Russia : The Cabbage Aphis and its Control . . . . . . . . 233 



Spain : A Catalogue of Encyrtidae . . . . . . . . . . . . 252 



Sudan, Anglo-Egyptian : The Natural Enemies of Aphids . . . . 238 



Sweden : Notes on Thysanoptera . . . . . . . . . . . . 223 



Switzerland ; The Use of Pyrethrum against Vine Moths . . . . 231 



Tripoli : Notes on Vine Pests . . . . . . . . . . . . 235 



Tunis ; The Occurrence of Phthorimaea operculella on Potatoes . . . . 230 



Tunis : A Lepidopterous Pest of Cabbages . . . . . . • . 235 



U.S.A. : Hopperburn and other Insect-borne Diseases of Potatoes 217, 243, 244 



U.S.A. : Precautions against Fyrausta nubilalis in Ohio . . . . . . 217 



U.S.A. : A New Midge attacking Coccids in Florida . . . . . . 218 



U.S.A.: jy^o/jAorMS caweWMS infesting Greenhouse Roses .. ..218,246 



U.S.A. : A Tachinid Parasite of Hyphantria cunea in Massachusetts . . 235. 



U.S.A. : The Identity of a Hymenopterous Parasite of Hypera variabilis 239 



U.S.A. : A Summary of State Quarantine Regulations . . . . . . 239 



U.S.A. : A List of the Pests of the Grape Vine 239 



U.S.A.: Notes on the Walnut Husk Maggot (i?Aa^o/e/is swaws) .. .. 239 



U.S.A. : Rate of Multiplication of the Hessian Fly 240 



U.S.A. : Overwintering of the Bacterial Wilt of Cucurbits . , . . 242 

 U.S.A. : The Transmission of Beet Diseases by Aphids and Leaf-hoppers, 242, 243 



U.S.A. : The Relation of Heliothis obsoleta to Fungus Diseases in Wheat 243 



U.S.A. : Notes on Tylenchus dipsaci . . . . . . . . . . 243 



U.S.A. : Additional Notes on Fungous Insects . . . . . . . . 244 



U.S.A. : Insect Pests in New Jersey in 1919-20 . .' . • . • • • • 244 



U.S.A. : Protectors for the Control of the Peach Tree Borer . . . . 245 



U.S.A. : Cranberry Pests in New Jersey . . . . . . . . . . 247 



U.S.A.: Miscellaneous Pests in New York in 1918 247 



U.S.A. : The Avoidance of Arsenical Spray Residue on Harvested Apples 249 



U.S.A. : Paradichlorobenzene as a Soil Fumigant . . . . . . . . 249 



U.S.A. : The Peach Twig-borer and its Control in California . . . . 249 



U.S.A.: Two New Blister Mites 250 



U.S.A. : Insect Pests intercepted in Quarantine in California . . . . 250 



U.S.A. : Quarantine Measures against Insect Pests . . . . . . 274 



U.S.A. : Life-history of the Codling Moth in the Grand Valley of 



Colorado 275 



U.S.A. : An Index to the Insect Pest Survey Bulletin . . . . . . 276 



U.S.A. : The Use of Aeroplanes for distributing Insecticide Dusts . . 277 



U.S.A. : The Juniper Webworm in New Jersey . . . . . . . . 279 



Uruguay : The Importation and Establishment of Beneficial Insects 



223, 224, 226, 227 



Uruguay : Measures against Borers in Plane Trees . . . . . . 223 



Uruguay : Winter Measures against Eriosoma lanigerum . . . . 224 



Uruguay : The Bagworm, Oeceticus platensis . . . . . . . . 224 



Uruguay : Notes on Miscellaneous Pests 224, 225, 226, 227 



Uruguay : Legislation against Pissodes notatus . . . . . . . . Til 



Uruguay : The Biological Control of Eriosoma lanigerum . . . . 258 



West Indies : Legislation against Mosaic Disease in Barbados . . 228 



West Indies : Insect Pests in St. Lucia . . . . . . . . . . 229 



West Indies : Insect Pests in Trinidad and Tobago in 1919 and 1920 . . 236 



West Indies : A p ate fr and sea infesting Coffee in Porto Rico . . . . 241 



West Indies ; Araecerus fasciculatus infesting stored Spices . . . . 276 



The Struggle for Existence between Man and Insects . . . . . . 231 



The World-wide Importance of the Pink BoUworm of Cotton . . . . 234 



A List of Phytophagous Chalcidoidea . . . . . . . . . . 238 



A New Apparatus for covering Plants with Sulphur . . . . . . 256 



Variations in the Qualities of Carbolineum . . . . . . . . . . 258 



Legislation : Against Cotton and other Pests in Tanganyika Territory, 273, 274 



Legislation : Against Stephanodercs hampei in French Colonies . . 228 



Legislation : Against Plant Pests in British Guiana . . . . . . 227 



Legislation : Against Insect Pests in U.S.A. . . . . . . . . 274 



Legislation : Against Pissodes notatus in Uruguay . . . . . . 227 



Legislation : Against Mosaic Disease in Barbados . . . . . . 228 



