well for what it's worth, i usually here gardeners here call it either "garden snail" or "striped garden snail".

were you reading my journal yet when i posted that study that found that contrary to garden folk wisdom, garden snails/slugs that were tempted with a tin of beer tended to actually sit on the side of the tin drinking the beer and end up tipsy? the study studied what kind of beer they preferred and found that Guinness was #1. someone commented that that should be their new slogan ;)