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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 Pseudostomatella papyracea ： ウィキペディア英語版 Pseudostomatella papyracea ''Pseudostomatella papyracea'', common name the papery stomatella, is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.〔Bouchet, P. (2012). ''Pseudostomatella papyracea'' (Gmelin, 1791). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=547313 on 2012-11-23〕〔Poppe G.T., Tagaro S.P. & Dekker H. (2006) The Seguenziidae, Chilodontidae, Trochidae, Calliostomatidae and Solariellidae of the Philippine Islands. Visaya Supplement 2: 1-228.〕 ==Description== The size of a shell varies between 17 mm and 32 mm. The thin, globose shell is obliquely conoidal. It is fawn colored, with a series of short markings at the periphery alternately reddish and white. It has narrow girdles on the spirals of fine arrow-shaped articulations. The surface is shining and polished. It is spirally sculptured by numerous low wide riblets. The striae of increment are fine. The spire is conical, small and acute with 5 to 6 whorls. The last whorl is very rapidly enlarging. The whorls of the spire show narrow sharp spiral lirae decussated by close raised longitudinal striae. The oval aperture is acutely angular above, not very oblique. It is brilliantly iridescent inside, and lightly silicate. The columella is deeply arcuate. The umbilical region is covered by an opaque, white, arcuately striated callus. Its outer edge is well defined.〔(H.A. Pilsbry (1890) Manual of Conchology XII; Academy of Natural Sciences, Philadelphia, 1890 ) (described as ''Stomatella papyracea'')〕 The animal, according to A. Adams,〔A. Adams in Thes. Conch, ii, p. 836,〕 has a horny operculum and although bulky is able to retract entirely within the shell. 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「Pseudostomatella papyracea」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.