<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">Cirripedia</topic></authority><related type="broader"><topic>Maxillopoda</topic></related><variant type="other"><topic>Cirripeda</topic></variant><variant type="other"><topic>barnacle</topic></variant><variant type="other"><topic>barnacles</topic></variant><variant type="other"><topic>cirripedes</topic></variant><variant type="other"><topic>cirripeds</topic></variant> <note xml:lang="en"><![CDATA[ Members of a subclass containing around 1,220 species of arthropod that go through several distinct swimming stages as plankton, then usually fix themselves to a rocky or other hard submerged surface as adults, having a hard shell and feeding by reaching into the water with modified legs. Classified as an  infraclass in some systems. ]]></note></mads>