CONTENTS— cont. 



PAGE 



New Zealand : The Bionomics of Odontria zealandica . . . . 503 



New Zealand : Regulations for the Control of Fire-Blight . . . . 50-1 



New Zealand : New Pests of Pears 50 1 



Palestine: Insect Pests on Imported Olive Plants .. .. .. 507 



Panama Canal Zone : The Preparation of Insecticides . . . . 497 



Persia : Notes on Aphids . . . . . . . . . . . . 498 



Porto Rico : The Transmission of Mottling Disease of Sugar-cane 



by Insects . . . . . . . . . . . . . . . . 483 



Porto Rico : A Bibliography of Sugar-cane Insects . . , . ... 48.'; 



Porto Rico : A List of Sugar-cane Pests .. .. .. .. 480 



Porto Rico : The Value of Lizards as Destroyers of Insects . . 48o 



Portugal: The Bionoraics of Sparganothispill&riana .. 494 

 San Thome : Insect Pests of Cacao, Coffee, etc. , . 491, 492, 493 



Santo Domingo : The Preparation of Insecticides . . . . . . 477 



Sicily ; Icen/o;p«rcftasi infesting Citrus .. .. .. .. 488 



Sudan, Anglo-Egtptian : Measures against Cotton Thrips .. 497 



Sumatra: Insect Pests in 1919-20 .. 494 



Sumatra: Lepidopterous Pests of Tea .. .. .. .. 510 



Switzerland : Recent injuries caused by Lygaeonematus pini to 



Swiss Forests . . . . . . . . . . . . . . 470 



Switzerland : A New Ant found on Orchids . . . . , . 487 



Trinidad : A Hopper-dozer for collecting Froghoppers . . . . 499 



U.S.A. : Experiments with Sprays for Macrosiphum solanifolii in 



Virginia . . . . . . . . . . . . . . . . 477 



U.S.A. : A New Aphid on Oak in California . . . . . . . . 479 



U.S.A. : Cutworms and their Control , . . . . . . . . . 479 



U.S.A.: A Conference on Quarantine Measures .. .. .. 479 



U.S.A.: Insect Pests intercepted in Quarantine in California .. 470 

 U.S.A. : The Use of Insecticides against Underground Insects 481, 482 

 U.S.A. : The Anatomy of the Larva of Heliofhis obsoleta and other 



Lepidoptera . ; . . . . . . . . . . . . 500 



U.S.A.: The Bionomics of JLjoMsgrossy^JH in Texas ,. .. .. 501 



U.S.A.: Measures against the Cowpea Weevil in Texas .. 501 



U.S.A.: Influenceof the Wind on the Movements of Insects .. 502 



U.S.A. : Comparisons of Dusting versus Spraying . . . . . . 504 



U.S.A. : Precautions against the Chinch Bug in Ohio . . . . 504 



U.S.A. : New Species and Varieties of Lachtiosterna . . . . . . 505 



U.S.A. : The Bionomics and Control of Saperda Candida . . . . 505 



U.S.A. : The Successful Introduction of Aphycus lounsburyi into 



California . . . . . . . . . . . . . . . . 506 



U.S.A. : The Fumigation of Dates against Insect Pests . . . . 507 



U.S.A. : A Termite Pest of Vineyards in California . . . . 507 



U.S.A. : Measures against the Argentine Ant in California .. .. 507 



U.S.A. : A Lepidopterous Pest of Citrus in California .. .. 508 



U.S.A. : Losses due to Bruchids infesting Beans in California .. 508 



U.S.A. : Pests intercepted in Quarantine in California .. .. 508 



U.S.A. : The Slender Wireworm and its Relation to Soils in South 



Carolina . . . . . . . . .... . . ... 509 



U.S.A. : Notes on parasitic Hymenoptera . . . . . • . . 509 



U.S.A. : The Classification and Bionomics of Clerid Larvae . . . . 510 



U.S.A. : Legislation against Pink Bollworm and other Pests . . 511 



West Indies: Insect Pests in Barbados in 1917-18 . . .. .. 471 



West Indies : Measures against Aleurocanthus woglumi on Citrus 



in Jamaica . . . . . . . . . . . . . • • ■ 480 



Gall-forming Cecidomyids on Central European Reed-grass . . 469 



Notes on Cacao Pests . . . . . . . . . . . . . . 478 



Insect Pests and How to Beat Them (Review) . . . . . . 480 



The Classification of the Family Aphididae u02 



