from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of numerous species of freshwater pectinibranchiate mollusks, belonging to Paludina, Melantho, and allied genera. Their operculated shells are usually green, often with brown bands.
from the GNU version of the Collaborative International Dictionary of English
- n. Any one of numerous species of freshwater pectinibranchiate mollusks, belonging to Paludina, Melantho, and allied genera. They have an operculated shell which is usually green, often with brown bands. See Illust. of Pond snail, under pond.
from The Century Dictionary and Cyclopedia
- n. The typical genus of Paludinidæ: same as Viviparus.
In the fresh water chalk formation of Steinheim, near Heidenheim, in Würtemberg, scientists have found, on the same place, in an uninterrupted series of strata, the snail valvata or paludina multiformis in all imaginable transitions -- from the flat winding, showing the form of a chess-board, up to the sharp form of a tower.
Ridge behind ridge, the long, low hills of paludina limestone stood out in successive tiers, each thrown up against its neighbor by the misty haze that broods eternally over the wooded valley; till, roaming across them all, the eye rested at last on the rearing scarp of Chanctonbury Ring, faintly pencilled on the furthest skyline.
The delicate paludina, of brown, horn-coloured, gracefully-formed shell, creeps on the water weeds, and hosts of snails may be studied.