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Species criteria in Anguispira (Anguispira) (Pulmonata: Discidae)
Vol 90, Page 15
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Comments on eastern North American Polygyridae
Vol 90, Page 25
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The genus Epirobia in Chiapas, Mexico
Vol 90, Page 41
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A new species of Callistochiton in the Caribbean
Vol 90, Page 46
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A new fossil Ashmunella (Pulmonata: Polygyridae) from the Guadalupe Mountains National Park, Texas
Vol 90, Page 49
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The Mitridae of the Galapagos Islands
Vol 90, Page 63
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New species of Sonorella (Pulmonata: Helminthoglyptidae) from New Mexico and Texas
Vol 90, Page 70
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The genus Fontigens from Appalachian caves (Hydrobiidae: Mesogastropoda)
Vol 90, Page 86
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Two new species of non-marine Mollusca from the Fort Union Group (Paleocene) of North Dakota and Montana
Vol 90, Page 94
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A new Humboldtiana (Pulmonata: Helminthoglyptidae) from Coahuila, Mexico
Vol 90, Page 99
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Succinea raoi new name for Succinea arboricola Rao, 1925 (Stylommatophora: Succineidae)
Vol 90, Page 125
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New Pleistocene Neogastropoda from the New Hebrides
Vol 90, Page 127