Trachydosaurus rugosus

from The Collaborative International Dictionary of English v.0.48

Stump-tailed \Stump"-tailed`\, a.
   Having a short, thick tail.
   [1913 Webster]

   {Stump-tailed lizard} (Zool.), a singular Australian scincoid
      lizard ({Trachydosaurus rugosus}) having a short, thick
      tail resembling its head in form; -- called also {sleeping
      lizard}.
      [1913 Webster]