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An old collecting ground revisited
Vol 33, Page 1, Date 1919
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New land shells from Alabama and Tennessee
Vol 33, Page 8, Date 1919
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A new form of Ampullaria
Vol 33, Page 10, Date 1919
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A new species of Physa from New York State
Vol 33, Page 11, Date 1919
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New land snails collected by the Ferriss and Hinkley expedition of 1919
Vol 33, Page 19, Date 1919
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Mollusca of Forrester Island, Alaska Univalves (continued from page 60)
Vol 33, Page 21, Date 1919
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A new Camaena from the Philippine Islands
Vol 33, Page 28, Date 1919
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Note on the name Duplicaria
Vol 33, Page 32, Date 1919
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Notes on the species of Fasciolaria of the Southeastern United States
Vol 33, Page 44, Date 1919
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A new variety of Oliva sericea miniacea
Vol 33, Page 58, Date 1919
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Collecting in the vicinity of Newark, New Jersey
Vol 33, Page 59, Date 1919
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Shells of La Jolla, California
Vol 33, Page 62, Date 1919
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Land shells of Laurel Springs, New Jersey
Vol 33, Page 67, Date 1919
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Polygyra plana bahamensis Van. n. var
Vol 33, Page 72, Date 1919
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Some large specimens of Argonauta
Vol 33, Page 74, Date 1920
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Some Auriculidae and Planorbidae from Panama
Vol 33, Page 76, Date 1920
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Guatemalan notes
Vol 33, Page 79, Date 1920
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Some notes on Philomycus
Vol 33, Page 80, Date 1920
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The shell of Philomycus carolinianus (Bosc.)
Vol 33, Page 83, Date 1920
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Climatic conditions as indicated by land shells on the island of Oahu
Vol 33, Page 89, Date 1920
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Ancylus obscurus Haldeman and species referred to it
Vol 33, Page 99, Date 1920
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Changes in western molluscan faunas
Vol 33, Page 103, Date 1920
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On the marine Mollusca of Staten Island, N. Y
Vol 33, Page 111, Date 1920
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The nomenclature and systematic positions of some North American fossils and recent mollusks. II
Vol 33, Page 118, Date 1920
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A new Planorbis from Illinois
Vol 33, Page 123, Date 1920
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A new form of Amnicola from the Ohio Pleistocene deposits with notes on a Physa from the same formation
Vol 33, Page 125, Date 1920
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Turritidae vs. Turridae
Vol 33, Page 130, Date 1920
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New species of West Coast shells
Vol 33, Page 135, Date 1920
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Herbert Huntington Smith
Vol 33, Page 136, Date 1920
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On the erosion and thickness of shells of the fresh-water mussels
Vol 34, Page 15, Date 1920
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A new Alaskan Chiton
Vol 34, Page 22, Date 1920
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A new species of Pyramidula from Alabama and notes on P. cumberlandiana with new varieties
Vol 34, Page 23, Date 1920
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Guatemala Mollusca
Vol 34, Page 37, Date 1920
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Anson A. Hinkley
Vol 34, Page 55, Date 1920
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Animal life in loess deposits near Alton, Illinois, with descriptions of two new varieties of land shells from the same deposits
Vol 34, Page 61, Date 1920
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Note on a preoccupied generic name in Cephalopods
Vol 34, Page 66, Date 1920
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Ancylus obscurus Haldeman and species referred to it
Vol 34, Page 73, Date 1921
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The type localities of Lymnaea emarginata Say and L. ampla Mighels
Vol 34, Page 77, Date 1921
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The anatomy of certain mussels from the Upper Tennessee
Vol 34, Page 81, Date 1921
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Modiolus demissus Dillwin, in San Francisco Bay
Vol 34, Page 91, Date 1921
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Land shells of southern Florida
Vol 34, Page 93, Date 1921
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The leaping razor shell
Vol 34, Page 95, Date 1921
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Species named in the Portland Catalogue: I, American
Vol 34, Page 97, Date 1921
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Collecting at Nahant Beach, Mass
Vol 34, Page 100, Date 1921
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The land mollusks of the Belgian Congo
Vol 34, Page 102, Date 1921
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A new Achatinella from Oahu
Vol 34, Page 109, Date 1921
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Hunting Achatinella meineckei and Partulina dubia in the Waianae Mountains, Oahu
Vol 34, Page 110, Date 1921
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Notes on Craspedopoma lucidum, Lowe and other Madeira snails
Vol 34, Page 113, Date 1921
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Collecting shells on the East Coast of Florida in the winters 1891 and 1892
Vol 34, Page 119, Date 1921
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Two new South American shells
Vol 34, Page 132, Date 1921
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The genus Plebecula Lowe
Vol 34, Page 133, Date 1921
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George Brettingham Sowerby
Vol 34, Page 137, Date 1921