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Further studies on the morphology of the Triviidae (Gastropoda: Prosobranchia) with emphasis on species from southern Africa
Authors:TERRENCE M. GOSLINER  WILLIAM R. LILTVED
Affiliation:Department of Invertebrate Zoology, California Academy of Sciences, Golden Gale Park, San Francisco, CA 94118, U.S.A.;Department of Marine Biology, South African Museum, P.O. Box 61, Cape Town 8000, South Africa
Abstract:Aspects of the morphology of II species of Triviidae are described, including the living animal, shell, radula, mantle complex, central nervous system and reproductive system. Interspecific differences in radular morphology are important in distinguishing closely allied species. Trivia aperta, T. costata and T. verhoeft are protandric hermaphrodites while T. caluariola, T. neglccta, T. pellucidula, T. rubra, T. solandri and T. suavis are gonochoric. The elaboration of the receptaculum seminis varies between species. In T. aperta, T. calvariola, T. neglecta and T. who& the receptaculum is undivided while in T. costafa, T. pellucidula, T. solandri and T. suavis there are two or more lobes of the receptaculum.
Keywords:Trivia    prosobranchs    gastropod morphology    hermaphroditism
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