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''Powelliphanta lignaria'', known as one of the amber snails, is a species of large, carnivorous land snail, a terrestrial pulmonate gastropod mollusc in the family Rhytididae. The eggs of ''P. lignaria'' are oval and seldom constant in dimensions 10 × 8.25, 9 × 7.75, 9 × 8, 8.75 × 7.75 mm. ''P. lignaria'' is endemic to the west coast of the South Island of New Zealand. There are seven subspecies,〔Powell A. W. B., ''New Zealand Mollusca'', William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1〕 all of which are listed by the New Zealand Department of Conservation as threatened: *''Powelliphanta lignaria johnstoni'' Powell, 1946 – ''Nationally Endangered'' *''Powelliphanta lignaria lignaria'' Hutton, 1888 – ''Nationally Vulnerable'' *''Powelliphanta lignaria lusca'' Powell, 1949 – ''Nationally Vulnerable'' *''Powelliphanta lignaria oconnori'' Powell, 1938 – ''Nationally Vulnerable'' *''Powelliphanta lignaria rotella'' Powell, 1938 – ''Nationally Endangered'' *''Powelliphanta lignaria ruforadiata'' Powell, 1949 – ''Nationally Endangered'' *''Powelliphanta lignaria unicolorata'' Powell, 1930 – ''Nationally Vulnerable'' ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Powelliphanta lignaria」の詳細全文を読む スポンサード リンク
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