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Traveling and collecting in Mexico
Vol 57, Page 1
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Observations on the local movements of Littorina litorea (L.) and Thais lapillus (L.)
Vol 57, Page 6
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Life cycle of Lymnaea stagnalis completed at room temperature without access to air
Vol 57, Page 8
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Two new Orinoco unionids, with notes on Unio granadensis Lea and U. patulus Lea
Vol 57, Page 14
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Helicostyla from the Talaud Islands, Molucca Islands, East Indies
Vol 57, Page 17
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Two new genera, two new species, and two new names of Chinese Melaniidae
Vol 57, Page 19
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Two new species of Drymaeus from Mexico
Vol 57, Page 28
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Ensis minor megistus n. subsp. a West Florida razor clam
Vol 57, Page 33
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Mrs. W. H. Eshnaur, 1862–1943
Vol 57, Page 35
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Collecting shells in the Solomon Islands
Vol 57, Page 41
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Abundance-areas of Mesodon pennsylvanicus (Green)
Vol 57, Page 42
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Marl deposits in Bonaventure, north of Bay Chaleur, Quebec, Canada, and in Houlton, Maine
Vol 57, Page 45
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A new type of fresh water clam from British Guiana
Vol 57, Page 46
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Variability, developmental changes, and denticle-replacement in the radula of Lymnaea stagnalis appressa Say
Vol 57, Page 52
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New species of Cerion, Nenia and Drymaeus
Vol 57, Page 59
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Notes on the names Poteria, Ptychocochlis, and Aperostoma
Vol 57, Page 62
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Papuina gartneriana Pfeiffer
Vol 57, Page 64
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Californian Olivellas
Vol 57, Page 73
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Tropical central Pacific Cypraeidae
Vol 57, Page 81
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A west American Julia
Vol 57, Page 86
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New Peruvian land mollusks
Vol 57, Page 87
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Observations on Pseudomonotis, a Late Paleozoic pelecypod
Vol 57, Page 90
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The Sphaeriidae, a preliminary survey
Vol 57, Page 93
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Variations of Spissula solidissima Dillwyn
Vol 57, Page 100
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Notes on land slugs of Los Angeles and Orange Counties, California
Vol 57, Page 109
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Burchia, a new genus of turrids
Vol 57, Page 115
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Taxonomic headaches
Vol 57, Page 116
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Peruvian land Mollusca-II
Vol 57, Page 118
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Vertigo parvula Sterki
Vol 57, Page 127
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A small collection of land shells from Nebraska
Vol 57, Page 130
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An overlooked description of a North American gastropod
Vol 57, Page 132
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A molluscan mass grave
Vol 57, Page 133
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Snails hoarded by Blarina at Ithaca, New York
Vol 57, Page 135
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Shell cleaning and epiphragm removal by Triodopsis albolabris (Say)
Vol 57, Page 138