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In sixteen species of the cyclophorid genus Leptopoma female genital ducts were examined; in four species male genital ducts were examined as well. In the females, bursa copulatrix and receptaculum seminis were found to open into the mantle cavity, close to the longitudinal genital aperture. Bursa copulatrix and receptaculum seminis — when present — in cyclophorid snails, were hitherto described having openings into the pallial oviduct (Weber, Tielecke, Berry, Kasinathan). A number of anatomical details of the female genital duct in Leptopoma are regarded useful diagnostic characters for the taxonomy of this group.

Genital Ducts in Several Species of the Cyclophorid Genus Leptopoma (Mollusca, Mesogastropoda)