VALVATA
Source: 567
‖Val‐va″ta (?), n. [[NL.; cf. L. valvatus having folding doors. See Valve.]] (Zoöl.) A genus of small spiral fresh-water gastropods having an operculum.
Source: 567
‖Val‐va″ta (?), n. [[NL.; cf. L. valvatus having folding doors. See Valve.]] (Zoöl.) A genus of small spiral fresh-water gastropods having an operculum.