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A new flying-squirrel from the Philippine Islands
Volume 31, Page 1
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A new flying-squirrel from eastern Asia
Volume 31, Page 3
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Description of new species of shells chiefly from Magdalena Bay, Lower California
Volume 31, Page 5
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A revision of the viviparous perches
Volume 31, Page 9
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New Chinese fishes
Volume 31, Page 15
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Five new mammals from Arizona and Colorado
Volume 31, Page 21
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A new genus and three new species of North American Membracidae (Hemiptera)
Volume 31, Page 27
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A new subspecies of chipmunk from the Yellowstone National Park
Volume 31, Page 31
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A new bullfinch from China
Volume 31, Page 33
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A new hare from British East Africa
Volume 31, Page 35
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A new unstalked Crinoid from the Philippine Islands
Volume 31, Page 37
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Three new bats from Haiti and Santo Domingo
Volume 31, Page 39
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A new crinoid from New Zealand, and another from Tasmania
Volume 31, Page 41
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Notes on District of Columbia Juncaceae
Volume 31, Page 45
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Notes on Clemmys
Volume 31, Page 51
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Occurrence of a European solitary bee (Andrena wilkella Kirby) in the eastern United States
Volume 31, Page 61
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Notes and descriptions of some anthomyiid genera
Volume 31, Page 65
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A list of families and subfamilies of ichneumon-flies or the super-family Ichneumonoidea (Hymenoptera)
Volume 31, Page 69
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New plants of the Pacific Northwest
Volume 31, Page 75
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Two new species of fossil marine shells from California
Volume 31, Page 79
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A new fossil Pyramidellid Mollusk from the West Coast of America
Volume 31, Page 81
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The dimorphs of species of Chaitophorus
Volume 31, Page 85
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Description of a new Snapping turtle and a new lizard from Florida.
Volume 31, Page 89
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The earliest technical name for the Portuguese ibex
Volume 31, Page 93
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The status oi Perognathus longimembris (Coues)
Volume 31, Page 95
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A new name for an African rat
Volume 31, Page 97
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Nomenclatural notes on milk snakes
Volume 31, Page 99
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Two new manzanitas from the Sierra Nevada of California
Volume 31, Page 101
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Geographic variation in Citellus tereticaudus
Volume 31, Page 105
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A new Hydnocera (Coleoptera: Cleridae)
Volume 31, Page 107
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Genera of the Eupterygidae (Homoptera; Jassoidea)
Volume 31, Page 109
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Mutanda ornithologica iii, iv
Volume 31, Page 125
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Two new shrews from Oregon
Volume 31, Page 127
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Six new species of trees and shrubs from Mexico
Volume 31, Page 131
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A new marine mollusk of the genus Cerithiopsis from Florida
Volume 31, Page 135
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Changes in and additions to molluscan nomenclature
Volume 31, Page 137
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The lip-ferns of the southwestern United States related to Cheilanthes myriophylla
Volume 31, Page 139
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Four new mollusks from the Philippine Islands
Volume 31, Page 153
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Two new genera and eight new birds from Celebes
Volume 31, Page 155
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Three new subspecies of Passerella iliaca
Volume 31, Page 161
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New spiroboloid diplopods
Volume 31, Page 165
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A new Selaginella from Oklahoma and Texas
Volume 31, Page 171
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Polychaetes from Monterey Bay
Volume 31, Page 173
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New marine mollusks from the Philippine Islands
Volume 31, Page 181
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Some western species oiLathynis
Volume 31, Page 189
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Description of a new lole from the Anamba Islands
Volume 31, Page 197
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Three new Philippine Island land shells
Volume 31, Page 199
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The status of the genus Orchilus Cabanis
Volume 31, Page 203