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The flat-spired three-toothed snail (''Triodopsis platysayoides'') — also known as the Cheat three-toothed snail after the Cheat River in West Virginia — is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Polygyridae. == Description == The color of the body of the animal in this species is pale gray. The shells of adult snails are 18–22 mm in width and 8 mm in height.〔 The shell of ''Triodopsis platysayoides'' is thin, right coiled (or dextral), and translucent, with 5 whorls. It is extremely flattened in shape.〔 The umbilicus is open and wide. The shell is pale brown (light horn) in color; the exterior surface of the peristome is yellowish and punctate.〔 The aperture of the shell is oblong-lunate.〔 The lip is thickened and white.〔 There is a thick tongue-shaped tooth in the parietal wall of the aperture.〔 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「Flat-spired three-toothed snail」の詳細全文を読む スポンサード リンク
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