1667. Snails are slugs covered by a shell. The two species most commonly met with in gardens, are the large garden snail (Helix aspersa Gm.), and the small banded or variegated snail (Helix nemoralis L.) (e). Both these seek the same food as the slug. In wet or moist weather, they may be found crawling upon the ground; but during warm days they are either concealed on the under surface of the leaves, or shelter themselves close to the roots. The most effectual remedy against all the different kinds of worms and slugs is watering the ground infested by them with lime water.