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The external anatomy of the primitive tanyderid dipteran Macrochile spectrum Loew, preserved in Baltic amber
Ser new, Vol 21, Page 1
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Descriptions of seven new species of Pilophorus (Miridae)
Ser new, Vol 21, Page 18
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Periodical swarming of Celerio lineata in Ecuador
Ser new, Vol 21, Page 27
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A biological note on the pterygopolymorphism of Aradus (Aradidae.)
Ser new, Vol 21, Page 29
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The morphological significance of the juxta in the male genitalia of Lepidoptera
Ser new, Vol 21, Page 32
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A new Geocoris from Illinois
Ser new, Vol 21, Page 38
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A may beetle with the pronotum showing a complete median division
Ser new, Vol 21, Page 40
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Further on annectant bugs
Ser new, Vol 21, Page 43
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The life history and habits of Eremochrysa punctinervis McLach (Neuroptera
Ser new, Vol 21, Page 48
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Description of a new Renodaeus from Texas (Miridae)
Ser new, Vol 21, Page 56
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The blood of insects, with special reference to that of the common household German or Croton cockroach, Blattella germanica Linn. II. The appearance of lipomicrons (micro fat particles) in the blood of the German or Croton cockroach. III. The tracheal system of the German cockroach
Ser new, Vol 21, Page 61
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Description of nine new species of Bryocorinae (Miridae)
Ser new, Vol 21, Page 101
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Undescribed species of the genus Limnophila from eastern North America
Ser new, Vol 21, Page 109
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Some remarks, al vuelo, on Tingitid names
Ser new, Vol 21, Page 116
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Note on the blister beetle Macrobasis murina Lee
Ser new, Vol 21, Page 118
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An American species of the genus Pachypappella Baker (Horn Aph
Ser new, Vol 21, Page 119
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Two new names and a correction in synonymy
Ser new, Vol 21, Page 125
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An undescribed tingi-tid from Arizona
Ser new, Vol 21, Page 126
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Wasps and bees as water-straddlers
Ser new, Vol 21, Page 127
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Notes on the Bely-tinae with descriptions of new species from the state of New York (Hymenoptera)
Ser new, Vol 21, Page 145
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Observations on the propagation and behaviour of Telea polyphemus
Ser new, Vol 21, Page 156
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Descriptions of eleven new species of Phytocoris from eastern North America (Miridae)
Ser new, Vol 21, Page 158
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A new and remarkably large species of Eupagoderes
Ser new, Vol 21, Page 169
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Descriptions of North American species of Pristaulacus Kieffer (Hymenoptera[long dash]Aulacidae)
Ser new, Vol 21, Page 173
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A new species of Sa-promyzidae from China (Diptera)
Ser new, Vol 21, Page 176
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Remarks on the Linnean species of Nepa and Laccotrephes (Nepidae)
Ser new, Vol 21, Page 177
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On the placement of the names caduca and retis (Lepid., Phalaenidae)
Ser new, Vol 21, Page 182
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Some interesting Cicadellid papers
Ser new, Vol 21, Page 185
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A new mayfly from Peru
Ser new, Vol 21, Page 189
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A new species of Sphecodes from the Belgian Congo (Hymenoptera)
Ser new, Vol 21, Page 191
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Some new records of aquatic Hemiptera from northern Michigan with the description of seven new Corixidae
Ser new, Vol 21, Page 194