Pulmonata
 有肺亞綱


 Pul·mo·na·ta n. pl.  Zool. An extensive division, or sub-class, of hermaphrodite gastropods, in which the mantle cavity is modified into an air-breathing organ, as in Helix, or land snails, Limax, or garden slugs, and many pond snails, as Limnæa and Planorbis.

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 Pulmonata
      n : large order of gastropods usually breathing by means of a
          lung-like sac comprising most land snails and slugs and
          many freshwater snails [syn: order Pulmonata]