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grove snail
The grove snail or brown-lipped snail (''Cepaea nemoralis'') is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc. It is one of the most common species of land snail in Europe and has been introduced to North America.
''Cepaea nemoralis'' is the type species of the genus ''Cepaea''.〔("Genus summary for ''Cepaea''" ). AnimalBase, last modified 23 December 2008, accessed 1 May 2011.〕
It is used as a model organism in citizen science projects.
==Description==
''Cepaea nemoralis'' is among the largest and, because of its polymorphism and bright colours, one of the best-known snails in Western Europe.〔 The colour of the shell of ''Cepaea nemoralis'' is very variable; it can be reddish, brownish, yellow or whitish, with or without dark brown colour bands.〔 Apertural lip usually dark brown, rarely white.〔 The umbilicus is narrow but open in juveniles, and closed in adults.〔 For every colour variant names were established in the 1800s; this system was later abandoned.〔 The surface of the shell is semi-glossy, and it has from 4½ to 5½ whorls. The width of the shell is 18–25 mm.〔 The height of the shell is 12–22 mm.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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