(n) :
(obsolete) Any of numerous species of freshwater pectinibranchiate mollusks, belonging to Viviparus (syn. Paludina), Melantho, and allied genera in family Viviparidae, with operculated shells, usually green, often with brown bands.
(n) :
(obsolete) Any of numerous species of freshwater pectinibranchiate mollusks, belonging to Viviparus (syn. Paludina), Melantho, and allied genera in family Viviparidae, with operculated shells, usually green, often with brown bands.