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''Indrella ampulla'' is a species of tropical terrestrial air-breathing gastropod mollusk in the family Ariophantidae. This is the type species of the monotypic genus ''Indrella'', which is endemic to the Western Ghats of India.〔2007. (''Tropical Land Snail Diversity: South and Southeast Asia'' ). The Natural History Museum, London. accessed 1 February 2009.〕〔Aravind N. A., Rajshekhar K. P. & Madhaystha N. A. (''Patterns of Land Snail Distribution in the Western Ghats'' ). accessed 1 March 2009.〕 This is the only species in the genus ''Indrella'', however the animal color is polymorphic: the visible soft parts of the snail can be various colors, including red and pale yellow. == Shell description == The shell of this species is like that of ''Vitrina'', imperforate, with few whorls and with a very large aperture.〔 The shell consists mainly of proteins with only small amounts of calcium carbonate.〔 The shell is obliquely ovate and globose in shape and very thin. Half the thickness consists of epidermis, marked throughout with plicate line of growth, crossed by faint impressed spiral lines, and on the last whorl by shallow irregular furrows. The color of the shell is brownish olive, sometimes darker brown. Spire is small, convex and obtuse. The number of whorls is 3 and a half, rapidly increasing, the last much larger, rounded at the periphery and beneath. The aperture is very large, oblique, roundly oval, the same colour within as without, but smooth and glossy. The peristome is thin, membranaceous, columellar margin much curved inwards.〔 The width of the shell is 38–63 mm. The height is 30 mm. The width of the aperture is 32 mm and the height of aperture is 30 mm. 〔Blanford W. T. & Godwin-Austen H. H. 1908. ''The Fauna of British India, Including Ceylon and Burma''. (Mollusca. Testacellidae and Zonitidae )''. Taylor & Francis, London, (page 48 )-50.〕 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「Indrella ampulla」の詳細全文を読む スポンサード リンク
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