The Collaborative International Dictionary of English v.0.48:

Proctucha \Proc"tu*cha\, n. pl. [NL., from Gr. ? anus + ? to
   have.] (Zool.)
   (a) A division of Turbellaria including those that have an
       intestine terminating posteriorly.
   (b) The Nemertina.
       [1913 Webster]