What is a genus of land snails, including a large number of species. Note: The genus originally included nearly all shells, but is now greatly restricted. See Snail, Pulmonifera called?

helix — (Zoöl.) A genus of land snails, including a large number of species. Note: The genus originally included nearly all shells, but is now greatly restricted. See Snail, Pulmonifera. (Webster's 1913.)

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