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Distribution of insects in western North America
Vol 12, Page 1
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A new chalcid-fly parasitic on the Australian bull-dog ant
Vol 12, Page 13
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Notes on the crane-flies of the Hawaiian Islands (Tipulidae, Diptera)
Vol 12, Page 25
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The Californian Species of Malthodes
Vol 12, Page 31
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Notes on the Repugnatorial Glands of Certain Notodontid Caterpillars
Vol 12, Page 44
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Notes on the Immature Stages of Deltometopus Rufipes Mels. (Coleoptera, Eucnemidae)
Vol 12, Page 49
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Resolutions on the Death of Dr. S. W. Williston
Vol 12, Page 56
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Thirteenth Annual Meeting
Vol 12, Page 57
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The Olfactory Sense of Lepidopterous Larvae
Vol 12, Page 65
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The streptocera group of the dipterous genus Tipula Linnaeus
Vol 12, Page 85
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Life History and Biological Notes on Chlaenius Impunctifrons Say. (Coleoptera, Carabidae)
Vol 12, Page 95
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Robberflies of the genus Erax
Vol 12, Page 103
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Some chalcid-wasps reared from cecidomyiid galls
Vol 12, Page 159
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The Progress of Scolia Manilae Ashm. in Hawaii
Vol 12, Page 171
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Notice of Proposed Amendment to the Constitution of the Entomological Society of America
Vol 12, Page 172
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The ants of the genus Metapone Forel
Vol 12, Page 173
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Notes on the Male Genital System in Certain Lepidoptera
Vol 12, Page 192
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The Aquatic Adaptations of Pyrausta Penitalis Grt. (Lepidoptera)
Vol 12, Page 213
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Chariesterus and Its Neotropical Relatives (Coreidae Heteroptera)
Vol 12, Page 227
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Eight New "Jassids" from the Eastern United States
Vol 12, Page 231
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New western spiders
Vol 12, Page 239
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The Terminal Abdominal Structures of Orthopteroid Insects: A Phylogenetic Study
Vol 12, Page 267
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Undescribed species of Japanese crane-flies (Tipulidae, Diptera)
Vol 12, Page 327
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Wing Structure of Lepidoptera and the Phylogenetic and Taxonomic Value of Certain Persistent Trichopterous Characters
Vol 12, Page 349
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The Life History and Early Stages of Platymetopius Hyalinus Osb., a Japanese Maple Leaf-Hopper in New Jersey
Vol 12, Page 369
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The Prevalence of Phormia Azurea Fallen (Larva Parasitic on Nestling Birds) in the Puget Sound Region and Data on Two Undescribed Flies of Similar Habit
Vol 12, Page 373
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Notes on the Biology of the Carabid Genera Brachynus, Galerita and Chlaenius
Vol 12, Page 382
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Index of Volume XII
Vol 12, Page 391