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L. A. Prozorova 《Russian Journal of Marine Biology》2003,29(1):49-52
Amphibious mollusks of the genus Cecina in the littoral and supralittoral of the Sea of Japan are represented by three species: Cecina manchurica A. Adams, 1861; C. tatarica (Schrenck, 1867); and C. scarlatoi Prozorova, 1996. Additional data on the morphology of the shell and radula are provided. Indices for the identification of adult decollated and corroded shells of these species which retained only 3.0–2.5 last whorls are proposed: (1) the ratio of the width of the ultimate whorl (without aperture) to the length of the ultimate and penultimate whorls and (2) the ratio of the width of the third whorl (from the bottom) to the width of the ultimate whorl (without aperture). 相似文献
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A new species of pomatiopsid gastropod, Tricula hortensis, is described from Sichuan Province, PR China. This new species is characterized by a large columellar peg or tooth situated mid body‐whorl. The reproductive anatomy of the female shows a number of character states that are plesiomorphic for the Triculinae. Tricula hortensis may be distinguished from the two other species of Tricula which bear a columellar tooth by differences in the shell and in pallial and/or reproductive structures. Tricula hortensis is found in spring‐fed irrigation canals serving market gardens in Mianzhu County, Chengdu, Sichuan. This species acts as intermediate host for the parasitic blood fluke Schistosoma sinensium Bao 1958. 相似文献
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