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The role of the individual in evolution
Vol 31, Page 1
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Ostracoda from the Devonian (Onondaga) chert of West Tennessee
Vol 31, Page 21
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Notes on the Pleistocene of Maryland
Vol 31, Page 28
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Contracaecum quincuspis, a new species of nematode from the American waterturkey
Vol 31, Page 33
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Naming the cultivated rubber tree Siphonia ridleyana
Vol 31, Page 46
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A critical synopsis of the Mexican lizards of the Uta ornata complex and a description of a new species from Chihuahua
Vol 31, Page 66
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Some thoughts on statistical inference
Vol 31, Page 85
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Names in Amaranthus, Arto-carpus, and Inocarpus
Vol 31, Page 93
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New Acanthaceae from Guatemala
Vol 31, Page 96
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Remarks on the Kentish Plovers of the extreme Orient, with separation of a new sub-species
Vol 31, Page 105
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Two new species of Coccinellid beetles from Costa Rica and Colombia
Vol 31, Page 107
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A new genus of Central American snakes related to Tantilla
Vol 31, Page 115
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Notes on snakes of the genus Conophis
Vol 31, Page 117
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Adaptive coloration in a single faunal association
Vol 31, Page 129
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The gender of scientific names in zoology
Vol 31, Page 135
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New American Tingitidae (Hemiptera)
Vol 31, Page 141
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Generic descriptions of Upper Paleozoic Bryozoa
Vol 31, Page 173
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A new Solenocera and notes on the other Atlantic American species
Vol 31, Page 181
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New genera and species of millipeds from the southern peninsula of Haiti
Vol 31, Page 188
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A revision of the parasitic wasps of the genus Necremnus Thomson (Eulophidae; Hymenoptera)
Vol 31, Page 196
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Revision of the Nearctic Megophthalminae (Homoptera: Cicadellidae)
Vol 31, Page 203
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New Middle Devonian stratigraphic names
Vol 31, Page 259
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Elongation of mesocotyls and internodes in Job's tears (Coix lachryma-jobi L.)
Vol 31, Page 261
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Ostracoda from Puerto Rican Bromeliads
Vol 31, Page 263
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Kraemeria bryani, a new species of trichonotid fish from the Hawaiian Islands
Vol 31, Page 269
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The use of chloroform to accelerate cyanogenesis in the analysis of cyanogenetic plants
Vol 31, Page 285
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Paleocene Mammals from the Denver Basin, Colorado
Vol 31, Page 289
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An evaluation of the results of treatments given narcissus bulbs for the control of the nematode Ditylenchus dipsaci (Kuhn) Filipjev
Vol 31, Page 296
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Some new species of Syrphidae from South America
Vol 31, Page 311
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New United States grasses
Vol 31, Page 348
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A review of the snakes of the genus Ficimia
Vol 31, Page 356
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Five new Guatemalan scarab beetles of the genus Phyllophaga
Vol 31, Page 384
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Notes on Mexican snakes of the genus Masti-cophis
Vol 31, Page 388
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Notes on Squilla empusa Say
Vol 31, Page 399
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Bird bones from Eskimo ruins at Cape Prince of Wales, Alaska
Vol 31, Page 404
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The gobies Waitea and Mahidolia
Vol 31, Page 409
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Some undescribed Syrphid flies from the Neotropical region
Vol 31, Page 432
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A review of the subspecies of the Indigo Snake (Drymar-chon corah)
Vol 31, Page 466
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A new brittle star of the genus Ophiocomella from Canton Island
Vol 31, Page 481
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Note on a vertebra of Palaeophis from the Eocene of Maryland
Vol 31, Page 501
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Three new species of Muhlenbergia
Vol 31, Page 504
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Pinus and Quercus in the Chesapeake Miocene
Vol 31, Page 506
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New species and distribution records of diaptomid copepods from the Marsh collection in the United States National Museum
Vol 31, Page 509