CONTENTS— coM^ 



U.S.A. : Report upon a Collection of new Coccidae from Lower California 229 



U.S.A. : The Importance of Entomology in New York Stati . . 230 



U.S.A. : A new Leaf-miner of Kalmia in New Jersey . . . . 232 



U.S.A. ; Measures against Insect Pests in Florida in 191S-2U . . 235 



U.S.A.: Notes on some Florida Weevils.. .. .. .. .. 23H 



U.S.A.: New Thysanoptera from Florida.. .. .. .. .. 23(^ 



U.S.A. : The Bionomics and Control of Neurotoma inconspicua. . . . 23H 



U.S.A. : Insect Pests in S. Dakota in 1919-20 23(S 



U.S.A. : Insect Pests of Field Crops in Missouri . . . . . . . . 238 



U.S.A. : MisceUaneous Pests in Missouri in 1919-20 239 



US.A. : A List of Fruit Pests in Missouri 239 



U.S.A. : The Dipping and Fumigation of Nursery Stock in Missouri . . 240 



U.S.A. : Bagworms destructive in Missouri . . . . . . . . 240 



U.S.A. : A Quarantine against Pyrausta nubilalis in Missouri . . . . 240 



U.S.A. : Legislation against Pyrausta mibilalis and other Pests in 



Missouri . . . . . . . . . . • . . . . • • • 240 



U.S.A.: The Bulb Mite [Rhizoglyphus hyacinthi) in Connecticut .. 241 



U.S.A.: A Spray Calendar for use in Connecticut . . .. .. .. 241 



U.S.A.: Notes on Forest Pests in Maine 241,242 



U.S.A.: The Organisation of Economic Entomology 245 



U.S.A.: Precautions against Outbreaks of Hessian Fly.. .• .- 245 



U.S.A. : The Bionomics and Control oi'Empoasca mali on Potatoes 245, 246, 247 



U.S.A. : Varieties of Maize exhibiting Resistance to Blissus leucopterus 247 



U.S.A. : The European Corn Borer in New York 247 



U.S.A. : The Com Leaf Aphis ( Aphis maidis, Fitch) in Kansas . . . . 24S 



U.S.A. : The Pea Moth in Wisconsin 248 



U.S.A. : A Girdler on Artichoke and other little-known Insect Pests . . 248 



U.S.A. : Notice of Papers on Apiculture . . . . . . . . ■ . . 249 



U.S.A. : Experiments with Grasshopper Baits . . . . . . . . 24H 



U.S.A. : Diprion simile in Pennsylvania . . . . . . . . . . 249 



U.S.A. : Anthonomus grandis thurberiae in Cotton Fields in Arizona . . 249 



U.S.A. : Psyllobora taedata, a Coccinellid attacking Mildews in California 250 



West Indies : Measures against Laphygma frugiperda in Jamaica. . . 220 



West Indies : Pests of Limes in Dominica in 1919-20 . . . . . . 261 



West Indies: The Food-plants of the Pink BoUworm.. .. .. 261 



West Indies: Report on Froghopper Blight on Sugar-cane .. .. 261 



The Influence of Environmental Factors on the Hatching of the Eggs of 



Aphids ' . . 206 



Oviposition in Orthoptera . . . . . . . . . . 208 



The Function of the Prothoracic Plate m Bruchus cinnensrs 212 



Notes on Rearing Insects in Hot Climates . . . . . . 2 1 '_' 



Notes on the Life-history of the Pollu Flea Beetle {Longitarsus ni^iiy<^n,tic-) 214 



Notes on Predaceous Nematodes . . . . . . . . . . . . 226 



Notes on the Embryology of Coccids . . . . . . . . . . . . 227 



A List of New Acari . . . . . . . . . . . . . • . • 227 



Studies of Immunity in Insects . . . . . . . • . . 234 



Lectures in Applied Entomology' (Review) . . . . . . . . . . 244 



The Classification of Central European Tachnids . . . . . . . . 252 



The Origin and Distribution of Phylloxera on Vines . . . . . . 256 



The Morphology and Systematic Position of Lariophagus distinguendus . . 258 



