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(), n. pl.[NL., fr. echiurus, the name of one genus (Gr. 'e°chis an adder + o'yra° tail) + -oid.] (Zol.) A division of Annelida which includes the genus Echiurus and allies. They are often classed among the Gephyrea, and called the armed Gephyreans. スポンサード リンク
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