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pdf version Terrestrial Gastropods of the Columbia Basin, British Columbia Robert G. Forsyth Volunteer, Royal British Columbia Museum 2574 Graham Street Victoria, British Columbia V8T 3Y7 Acknowledgements CIP data Introduction Terrestrial Gastropods in British Columbia What are Terrestrial Gastropods? Terrestrial Gastropods in the Columbia Basin Distribution of Terrestrial Gastropods Introduced Species Identification of Species Collecting, Preserving and Dissecting Terrestrial Gastropods Morphology The Shell The Animal: External Features Some Internal Anatomy Format of this Report Systematic Checklist of the Terrestrial Gastropods of the Columbia Basin Key to Terrestrial Gastropods of British Columbia Explanation to the key Species Accounts Family Cionellidae Family Vertiginidae Family Valloniidae Family Punctidae Family Discidae Family Oreohelicidae Family Arionidae Family Succineidae Family Euconulidae Family Zonitidae Family Vitrinidae Family Limacidae Family Agriolimacidae Family Polygyridae Family Thysanophoridae Family Helicidae Glossary Literature Cited

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