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The Behavior of Certain Insects to Various Wave-Lengths of Light
Vol 50, Page 1
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Butterflies. A Handbook of the Butterflies of the United States, Complete for the Region North of the Potomac and Ohio Rivers and East of the Dakotas by Ralph W. Macy, Harold H. Shepard
Vol 50, Page 36
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On Border-Line Dircenna (Lepidoptera, Ithomiinæ)
Vol 50, Page 37
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A New Parasitic Fly (Cuterebridæ) from the Northern White-Footed Mouse
Vol 50, Page 45
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Six New Chinese Membracidæ
Vol 50, Page 61
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Notes on Ecuadorian Butterflies. II. Papilio
Vol 50, Page 123
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Records and Descriptions of Neotropical Crane-Flies (Tipulidæ, Diptera), XIV
Vol 50, Page 135
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Electron Micrographs of Insect Tracheæ
Vol 50, Page 147
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Notes on Cicadas with Descriptions of New Species
Vol 50, Page 169
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Dating the Systema Entomologiæ, by Fabricius and Papillons Exotiques Volume I, by Cramer
Vol 50, Page 189
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College Entomology by E. O. Essig
Vol 50, Page 192
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The Wing of Mastogenius (Coleoptera)
Vol 50, Page 193
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Notes on the Genus Seioptera Kirby (Otitidæ, Diptera)
Vol 50, Page 195
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For More Clarity in Entomological Writing
Vol 50, Page 199
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Abdominal Glands of Hesperiinæ
Vol 50, Page 203
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In Memory of Charles Schaeffer. Compiled from Memoranda Found among the Papers of the Late Charles W. Leng
Vol 50, Page 209
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Proceedings of the New York Entomological Society
Vol 50, Page 211
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The Sarcophaginæ and Their Relatives in New York. II
Vol 50, Page 215
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General Entomology by S. W. Frost
Vol 50, Page 242
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The Identity of the Florida Race of Leptotes (Lepidoptera, Lycænidæ)
Vol 50, Page 243
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Further Electron Microscope Studies on Arthropod Tracheæ
Vol 50, Page 245
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A New Genus and a New Species of Otitidæ from North America (Diptera)
Vol 50, Page 249
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Records and Descriptions of Neotropical Crane-Flies (Tipulidæ, Diptera), XV
Vol 50, Page 251
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The Nymphal Development for the Roach, Periplaneta americana L
Vol 50, Page 263
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Taxonomic Observations on Bees with Descriptions of New Genera and Species (Hymenoptera; Apoidea)
Vol 50, Page 273
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Nymphalidæ of the Antilles (Lepidoptera Rhopalocera)
Vol 50, Page 283
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Proceedings of the New York Entomological Society
Vol 50, Page 289
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The American Commission on Scientific Nomenclature in Entomology
Vol 50, Page 293
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New and Imperfectly Known Neotropical Polybiinæ (Hymenoptera, Vespidæ)
Vol 50, Page 295
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Notes on Ecuadorian Butterflies, V
Vol 50, Page 309
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Near Horizons, the Story of an Insect Garden by Edwin Way Teale
Vol 50, Page 334
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The Parasitic Habits of Muscina stabulans Fabricius
Vol 50, Page 335