MolluscaBase taxon details
original description
(of Turbonilla (Pyrgiscus) optiva Nomura, 1937) Nomura S. (1937). Additional Pyramidellidae from Siogama Bay, with remarks on the molluscan fauna, especially Pyramidellidae from Sagami Bay, being a comparative study. <em>Saito Ho-on Kai Museum Research Bulletin.</em> 13: 11-107, pls. 4-14. [details]