Potamostoma shizunaiense gen. et sp. nov. (Nemertea: Hoplonemertea: Monostilifera): a new brackish-water nemertean from Japan |
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| Authors: | Kajihara Hiroshi Gibson Ray Mawatari Shunsuke F |
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| Institution: | Division of Biological Sciences, Graduate School of Science, Hokkaido University, Sapporo, Japan. |
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| Abstract: | Potamostoma shizunaiense gen. et sp. nov. (Nemertea: Hoplonemertea: Monostilifera) is described from the mouth of the River Shizunai, Hokkaido, Japan. This genus is readily distinguished from other monostiliferans by an oesophagus opening far anteriorly into the rhynchodaeum, a well developed excretory system extending the whole body length, terminals of the excretory collecting tubules situated between the body wall circular muscle layer and the dermis, and bilobed testes in males. |
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