chlamydosaurus kingii

from The Collaborative International Dictionary of English v.0.48

frilled \frilled\ (fr[i^]ld), a.
   Furnished with a frill or frills.
   [1913 Webster]

   {Frilled lizard} (Zool.), a large Australian lizard
      ({Chlamydosaurus Kingii}) about three feet long, which has
      a large, erectile frill on each side of the neck.
      [1913 Webster]