Excerpt from West American Shells: A Description in Familiar Terms of the Principal Marine, Fresh Water and Land Mollusks of the United States Found West of the Rocky Mountains, Including Those of British Columbia and AlaskaIn order to adapt this book to readers of West Coast Shells, the old name of a species has been retained in parentheses, whenever a change has been made. A com mon name has also been given to each species described, usually...
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