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The generic names Chartergus, Parachartergus, Epipona and Tatua. A correction (Vespidae, Hymenoptera)
Ser new, Vol 38, Page 4
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North American Stenodynerus of the Anormis group (Vespidae, Hymenoptera)
Ser new, Vol 38, Page 6
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A new generic name in Strepsiptera and description of a new species (Strepsiptera, Stylopidae)
Ser new, Vol 38, Page 12
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On some holarctic Sphecoid wasps (Aculeata, Hymenoptera)
Ser new, Vol 38, Page 14
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Studies on Siphonaptera of eastern North America
Ser new, Vol 38, Page 18
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New-species of Ptychopteridae (Diptera). II
Ser new, Vol 38, Page 37
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Notes on Apodemia (F. & F.) and other southern butterflies occurring in northern California
Ser new, Vol 38, Page 42
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Immature stages of Bajulata bajula Goding (Membracidae, Homoptera)
Ser new, Vol 38, Page 44
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Two new nearctic Oxybelus (Hymenoptera, Sphecidae)
Ser new, Vol 38, Page 91
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Notes on the biology of Chyliza notata (Diptera, Psilidae)
Ser new, Vol 38, Page 97
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Five new western Dolichopodidae (Diptera)
Ser new, Vol 38, Page 101
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Notes on Rhabdopterus in the United States (Coleoptera, Chrysomelidae)
Ser new, Vol 38, Page 111
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Notes on the synonymy and distribution of American Histeridae (Coleoptera)
Ser new, Vol 38, Page 123
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Three new species of Texananus from the western and southwestern United States
Ser new, Vol 38, Page 124
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Orchelimum feeding notes
Ser new, Vol 38, Page 140
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Stingless bees nesting in association with ants (Hymenoptera)
Ser new, Vol 38, Page 141
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New species of North American Gomphine dragonflies and life-history notes on some of them
Ser new, Vol 38, Page 143
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Studies on the Plecoptera of North America. IV. Further notes on the Capniidae
Ser new, Vol 38, Page 155
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A novel method of collecting dragonfly nymphs
Ser new, Vol 38, Page 163
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A new genus (Tumeus) and six new species of leafhoppers closely related to Cloanthanus (Homoptera, Cicadellidae)
Ser new, Vol 38, Page 168
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A comparative morphological study of the terminalia of male calypterate cyclorrhaphous Diptera and their acalypterate relatives
Ser new, Vol 39, Page 1
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Synonymic notes in the genus Glaenocorisa Thomson (Hemiptera, Corixidae)
Ser new, Vol 39, Page 32
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New Syrphid flies from North and South America
Ser new, Vol 39, Page 35
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Four new American Tingidae (Hemiptera)
Ser new, Vol 39, Page 41
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Two new Adephagid water beetles from the Pacific northwest
Ser new, Vol 39, Page 45
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Vernal flight of males of some western bumblebees (Hymenoptera, Bombidae)
Ser new, Vol 39, Page 48
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The shift from aquatic to aerial respiration in dragonflies
Ser new, Vol 39, Page 49
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Host relationships of some sapygid wasps (Hymenoptera, Sapy-gidae)
Ser new, Vol 39, Page 54
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Additional species of the genus Baccha from the New World
Ser new, Vol 39, Page 56
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A new genus Tenuisanus[long dash]and species of Mexican leafhopper (Homoptera, Cicadellidae)
Ser new, Vol 39, Page 73
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Some new forms of Platycheirus of the family Syrphidae
Ser new, Vol 39, Page 75
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Some insect food of the chickadee
Ser new, Vol 39, Page 85
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A noteworthy undescribed crane-fly from tropical America (Dip-tera, Tipulidae)
Ser new, Vol 39, Page 92
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Sphaeridini inhabiting Boreal America
Ser new, Vol 39, Page 94
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The tribe Cenchreini with special reference to the Cenchrea complex (Homoptera, Derbidae)
Ser new, Vol 39, Page 99
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A key to the species of Geotrupes (Coleoptera, Scarabaeidae) of America north of Mexico
Ser new, Vol 39, Page 112
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de la. New records of Oncopeltus (Hemiptera, Lygaeidae) and a new species from the U.S
Ser new, Vol 39, Page 135
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The genus Menosoma (Homoptera, Cicadellidae) and a new genus Spathanus (Homoptera, Cicadellidae)
Ser new, Vol 39, Page 157
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Observations on the migration of the monarch butterfly (Anosia plexippus)
Ser new, Vol 39, Page 161
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1940 supplement to the Coleoptera found living in and on various fungi
Ser new, Vol 39, Page 164
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A key to the North American species of the genus Suillia R.-D. (Diptera, Helomyzidae)
Ser new, Vol 39, Page 173