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''Botelloides'' is a genus of sea snails, marine gastropod mollusks in the family Trochidae, the top snails.〔Rosenberg, G.; Bouchet, P. (2012). ''Botelloides'' Strand, 1928. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=512295 on 2012-11-23〕 ==Description== The general characteristics of the species in this genus are: * the shell is subcylindrical and pupoid in shape * the whorls wind obliquely on the last two-thirds of the shell * sculpture: the earlier whorls are smooth, the later ones bear fine incised, spiral grooves * the shape of the aperture is pyriform to circular * the columella is excavate * the outer lip is grooved within and bevelled to a sharp edge Differences between the species are defined by the shell gradually widening towards the body whorl, or the shell not widening but is cylindrical. 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「Botelloides」の詳細全文を読む スポンサード リンク
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