Source : Webster's Revised Unabridged Dictionary (1913)

Phylactolaema \Phy*lac`to*l[ae]"ma\, Phylactolaemata
\Phy*lac`to*l[ae]"ma*ta\, n. pl. [NL., fr. Gr. ? to guard + ?
   the gullet.] (Zo["o]l.)
   An order of fresh-water Bryozoa in which the tentacles are
   arranged on a horseshoe-shaped lophophore, and the mouth is
   covered by an epistome. Called also {Lophopoda}, and
   {hippocrepians}.