The Collaborative International Dictionary of English v.0.48:

Pseudorhabdite \Pseu`do*rhab"dite\, n. [Pseudo- + Gr. ? a rod.]
   (Zool.)
   One of the peculiar rodlike corpuscles found in the
   integument of certain Turbellaria. They are filled with a
   soft granular substance.
   [1913 Webster]