...A long mouth stalk extends downward from the center of the umbrella, with a mouth opening at the tip. Along the inside of the umbrella is a narrow membrane called the verge, which is a major characteristic of hydromedusae. Tube jellyfish such as the Portuguese man-of-war (illustration) and the Baren jellyfish have a float called a swimming bell at the top, and the lower part is made up of polyps with various functions. *Some of the terminology that mentions the "velum" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…また傘の中央から下方に向けて長い口柄がで,その先端に口が開いている。傘の内側に沿って縁膜(えんまく)という狭い膜があり,これがヒドロクラゲの大きな特徴になっている。カツオノエボシ(イラスト)やバレンクラゲなどのクダ(管)クラゲ類は,上端に泳鐘(えいしよう)といううきがあり,その下部はいろいろな機能をもったポリプによって構成されている。… ※「縁膜」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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