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Fissurella afra : ウィキペディア英語版 | Fissurella afra
''Fissurella afra'' is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets. ==Description== ''Fissurella afra'' has on ovate-oblong and convex shell. The bull-fish within it is painted with brownish-violet rays and is white within. For the rest it is ovate, conicale, and obtuse at its summit; its fissure is ovate and contracted in the middle. ''Fissurella afra'' is also very finely striated radiately, and marked in the same way with radiating bands of a violaceous-brown on a yellowish-white ground. This species is often confused with the ''D. nimbosa'', but its summit is more elevated and the aperture is carried more forward.〔(Manual of Conchology; Structural and Systematic. pp. 169 )〕 Length 9, breath 7, alt. 5 ½ lines.
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「Fissurella afra」の詳細全文を読む
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