Polycystididae

Polycystididae is a family of flatworms belonging to the order Rhabdocoela.

Genera
Genera:
 * Acrorhynchides Strand, 1928
 * Acrorhynchus Graff, 1882
 * Albertorhynchus Schockaert, 1976
 * Alcha Marcus, 1949
 * Gyratrix Ehrenberg, 1831