Field Guide to Survey and Manage Terrestrial Mollusk Species from the Northwest Forest Plan

This field guide is intended for use in identifying 27 terrestrial mollusk species listed in Table C-3 or page C-6 of the Record of Decision for the Northwest Forest Plan, which require survey prior to ground disturbing activities. Also, it provides a method for updating current information with new illustrations and range data. The first section offers some basic information about mollusk morphology and terminology used in the descriptive text. The main body of the guide contains photographs, species descriptions, and range and habitat information for the terrestrial mollusk species listed in the Record of Decision for the Northwest Forest Plan. This section is divided into two parts (twenty terrestrial snail species and seven terrestrial slug species) each organized alphabetically by scientific name. Information and photographs of similar species are also included in this section.