CONTENTS— co«(. 



Germaky : The Resumption of Sericulture . . 



Germany : The Use of Nicotiiie against Aphids 



Germany : Lygus prats nsis, a serious Pest of Potatoes 



Germany : Measures against Sparganothis pilleriana 



Germany: The Bionomics of Saperda populnea infesting Poplar 



in Bavaria . . 

 Germany : Insects infesting Mistletoe 

 Germany : An Outbreak of Lophyrus riifus on Pines 

 Germany : Miscellaneous Pests in 1916-17 . . 

 Germany : An Imported Scale-Insect 

 Germany : Lepidopterous Pests of Spruce . . 

 Germany : Pests of Cultivated Plants in the Rhine Province 



1916 & 1917 



Germany : Notes on Fruit Pests in 1918-19 



Germany : Pests of Rape and Turnip in Mecklenburg 



Haavaii : The Control of Dacws cacurbUae by Opius fletcheri 



Italy : The Value of Chloropicrin against Grain Pests 



Japan : Notes on a Chrysoinelid Pest of Potatoes . . 



Japan : The Bionomics and Control of Cydia molesta 



Japan : Notes on a Weevil infesting Peanuts 



Japan : Notes on New Aphids 



Mesopotamia : Observations on Vine Pests 



Nevp- Zealand : Control of R§d Mite on Apple Trees 



Nevs^ Zealand : Measures against Orchard Pests . . 



Rhodesia, Southern : Further Experiments with Poisoned Bait 



for Maize Pests . . . . . . . . . . . . 322, 



Samoa : Notes on MetarrMzium anisopUae . , 



Spain : Measures against Olive Pests 



Switzerland : Measures against Vine Moths . . . . 326, 



Tasmania : The Control of the Codling Moth 



Tasmania : Notes on Scale- Insects 



Turkey : The Anti-Locust Campaign in 1916-17 .. 



U.S.A. : The Pink-boli-worm in Texas 



U.S.A. : Precautions against the 17 -year Locust 



U.S.A. : Quarantine Measures agamst the European Corn Borer 



U.S.A. : The Introduction of Beneficial Insects into California 



U.S.A. : Insect Pests in Connecticut in 1919 



U.S.A. : Gipsy and Brown-tail Moth Work in 1919 in Connecticut 



U.S.A. : Experiments against the Chrysanthemum Gall Midge 



U.S.A. : Pests of Cucumber etc., in Connecticut 



U.S.A. : Precautions against the Pink Boll-worm etc. . . 342, 



U.S.A. : Clover Pests in Washington 



U.S.A. : Currant and Gooseberry Pests in Washington 



U.S.A. : The Bionomics and Control of Trachelus tabidus . . 



U.S.A. : The Control of the Oriental Fruit Moth in Virginia ^ . . 



U.S.A. : Precautions against the Entry of PopilUa japonica into 

 Pennsylvania 



W^est Indies : The Cowpea Weevil in St. Vincent 



Correction of a Generic Name in Chalcids 



Notes on Plant Pest Quarantines 



The Insecticidal Properties of Pyrethrum cinerariaefoUum 



Insect-infesting Fungi of the Genus Tarichium 



The Effect of the Attacks of Aphids on Plant Cells . . 352, 353, 



An Automatic Collector of large Capacity for the Study of Under- 

 ground Insects 



A Review of the Literature on Potato Pests in 1916 



The Author of the Aphid Genus Lachnus 



Crustacea destructive to Timber 



The Preparation of Home-made Lime-sulphur 



The Reactions of Lepidopterous Larvae to Bacilli and Bacteria 



Af>E. 



:V45 



:U6 

 ;u6 



356 



356 

 357 

 357 



35S 

 358 

 358 



359 



359 

 359 

 3-i7 

 3;M 

 321 

 3-21 

 3:21 

 322 

 34G 

 324 

 344 



332 



2.54 

 324 

 348 

 336 

 327 

 352 

 326 

 331 

 334 

 335 

 337 

 341 

 342 

 342 

 343 

 345 

 345 

 347 

 354 



360 

 326 

 322 

 330 

 334 

 345 

 356 



352 

 354 



354 

 355 

 360 

 328 



