Limacodes scapha

from The Collaborative International Dictionary of English v.0.48

Skiff \Skiff\, n. [F. esquif, fr. OHG. skif, G. schiff. See
   {Ship}.]
   A small, light boat.
   [1913 Webster]

         The pilot of some small night-foundered skiff.
                                                  --Milton.
   [1913 Webster]

   {Skiff caterpillar} (Zool.), the larva of a moth ({Limacodes
      scapha}); -- so called from its peculiar shape.
      [1913 Webster]