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''Tectus maximus'' is a species of sea snail, a marine gastropod mollusk in the family Tegulidae.〔Bouchet, P. (2012). ''Tectus maximus'' (Koch in Philippi, 1844). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=580118 on 2012-09-01〕〔Williams S.T., Karube S. & Ozawa T. (2008) Molecular systematics of Vetigastropoda: Trochidae, Turbinidae and Trochoidea redefined. Zoologica Scripta 37: 483–506.〕 ==Description== The height of the shell attains 95 mm, its diameter also 95 mm. The shell is less ponderous than ''Tectus niloticus''. Its form is strictly conical. The whorls of the spire are decidedly plicate or tuberculate, planulate. The body whorl is not dilated at the periphery. The flat base is concentrically grooved. The columella is less oblique than in the type.〔(Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia )〕 This species was first considered an arrested or primitive form of ''Tectus niloticus'', as in the conic form, flat, lirate base, and sculptured spire, it exactly resembles an immature specimen of the latter species. But in 1869 Dr. von Martens considered them different species.〔Dr. von Martens, Ann. and Mag. N. H., 1869, p. 97〕 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「Tectus maximus」の詳細全文を読む スポンサード リンク
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