Snails in Folklore

I was hoping to learn about snails in folklore...

That site has absolutely no useful information about snails in folklore whatsoever, except to say that there are snails in folklore. What a bunch of bullshit. Please post some links to actual relevant information about the snail folklore connection.

“The gypsies believe that the Earth-fairies are the foes of every kind of worm and creeping insect with the exception of the snail, which they therefore call the … earthy-horse. English gypsies, and the English peasantry, as well as gypsies, call snails ‘cattle, because they have horns.’ Snails are a type of voluptuousness, because they are hermaphrodite, and exceedingly giving to sexual indulgence, so that as many as half a dozen may be found mutually giving and taking pleasure. ... A snail’s shell forms a powerful fetish for a true believer. A girl can win (illicit) love from a man by inducing him to carry a snail shell which she has had for some time about her person. To present a snail shell is to make a very direct but not very delicate declaration of love to any one.”

Charles Godfrey Leland, 1891, ‘Gypsy Sorcery and Fortune-telling’, cited in ‘The Faber Book of Exploration’ 2002 (B. Allen, ed.)