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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Polygyriscus ： ウィキペディア英語版 Polygyriscus ''Polygyriscus'' is a genus of minute air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Polygyridae. This is a monotypic genus〔USFWS. (''Polygyriscus virginianus'' Five-year Review. ) January 2008.〕 of snails containing the single species ''Polygyriscus virginianus'', known commonly as the Virginia fringed mountain snail or the Virginia coil.〔(''Polygyriscus virginianus''. ) The Nature Conservancy.〕 That species is endemic to the State of Virginia in the United States. The Virginia coil was listed as federally endangered species on 2 August 1978.〔U.S. Fish & Wildlife Service. ("Species Profile: Virginia fringed mountain snail (''Polygyriscus virginianus'')" ). U.S. Fish & Wildlife Service. Accessed 4 October 2011.〕 This snail was described in 1947. It is very rare; the snail has only been seen on bluffs along the New River in Pulaski County, Virginia. Only four adult specimens have been observed since 1978, and no juveniles have been seen since 1971. The snail is, however, difficult to find because it is only 4 millimeters long and may burrow up to 2 meters into the soil.〔 ==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「Polygyriscus」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.