Cirripedia
  蔓足亞綱
  Cir·ri·pe·di·a n. pl.  Zool. An order of Crustacea including the barnacles. When adult, they have a calcareous shell composed of several pieces. From the opening of the shell the animal throws out a group of curved legs, looking like a delicate curl, whence the name of the group. See Anatifa.
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  Cirripedia
       n : barnacles [syn: subclass Cirripedia]