pseudhaemal vessels

from The Collaborative International Dictionary of English v.0.48

Pseudhaemal \Pseud*h[ae]"mal\, a. [Pseudo- + h[ae]mal.] (Zool.)
   Pertaining to the vascular system of annelids.
   [1913 Webster]

   {Pseudh[ae]mal fluid}, the circulatory fluid, or blood, of
      annelids, analogous to the blood of vertebrates. It is
      often red, but is sometimes green or colorless.

   {Pseudh[ae]mal vessels}, the blood vessels of annelids.
      [1913 Webster]