The Collaborative International Dictionary of English v.0.48:

Labyrinthici \Lab`y*rin"thi*ci\, n. pl. [NL. See Labyrinth.]
   (Zool.)
   An order of teleostean fishes, including the Anabas, or
   climbing perch, and other allied fishes.
   [1913 Webster]

   Note: They have, connected with the gill chamber, a special
         cavity in which a labyrinthiform membrane is arranged
         so as to retain water to supply the gills while the
         fish leaves the water and travels about on land, or
         even climbs trees.
         [1913 Webster]