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Turbo imperialis
''Turbo imperialis'' is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails.
''T. imperialis'' is fished commercially for its pearly shell, and is often confused with ''T. marmoratus''; both species are known as "the green snail". This species is also often confused with ''Turbo militaris''.〔 The Natural History Museum website () accessed 9 April 2014〕
==Description==
The length of the shell varies between 50 mm and 120 mm. The large, solid shell has a globose-conic shape. It is ventricose and imperforate. Its color is green, irregularly mottled and spirally striped with chestnut, closely irregularly striate with the same color. The 6-7 convex whorls show well marked sutures, and numerous more or less conspicuous revolving furrows. The large body whorl is somewhat flattened above. The aperture is subcircular and pearly white within The outer lip is rather thin. The arched columella has a pearly callus, which reappears at the posterior angle. The green parietal wall is nearly devoid of callus. The base of the shell is slightly dilated and scarcely produced. 〔 (G.W. Tryon (1888), Manual of Conchology X; Academy of Natural Sciences, Philadelphia ) (described as ''Turbo imperialis'' Gmelin, 1791)〕
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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