Cylindrostomidae

Cylindrostomidae is a family of flatworms belonging to the order Prolecithophora.

Genera:
 * Allostoma van Beneden, 1861
 * Allostoma Westblad, 1955
 * Cylindrostoma Örsted, 1845
 * Einarhelmins Karling, 1993
 * Enterostomula Reisinger, 1926
 * Euxinia Graff, 1911
 * Monoophorum Böhmig, 1890
 * Pregermarium Stirewalt, Ferguson & Kepner, 1942
 * Thallagus Marcus, 1951