Mecynostomidae is a family of acoels.
- Eumecynostomum altitudi <small>Faubel & Regier, 1983</small>
- Eumecynostomum asterium <small>Hooge & Tyler, 2003</small>
- Eumecynostomum bathycolum <small>(Westblad, 1948)</small>
- Eumecynostomum boreale <small>(Faubel, 1977)</small>
- Eumecynostomum evelinae <small>(Marcus, 1948)</small>
- Eumecynostomum flavescens <small>(Dörjes, 1968)</small>
- Eumecynostomum fragilis <small>(Dörjes, 1968)</small>
- Eumecynostomum juistensis <small>(Dörjes, 1968)</small>
- Eumecynostomum luridum <small>Kozloff, 2000</small>
- Eumecynostomum macrobursalium <small>(Westblad, 1946)</small>
- Eumecynostomum maritimum <small>(Dörjes, 1968)</small>
- Eumecynostomum pallidum <small>(Beklemischev, 1915)</small>
- Eumecynostomum papillosum <small>(Faubel, 1974)</small>
- Eumecynostomum tardum <small>(Ehlers & Dörjes, 1979)</small>
- Eumecynostomum westbladi <small>(Dörjes, 1968)</small>
- Limnoposthia polonica <small>(Kolasa & Faubel, 1974)</small>
- Mecynostomum auritum <small>(Schultze. 1851)</small>
- Mecynostomum caudatum <small>(Uljanin, 1870)</small>
- Mecynostomum filiferum <small>Ax, 1963</small>
- Mecynostomum haplovarium <small>Dörjes 1968</small>
- Mecynostomum predatum <small>Faubel 1976</small>
- Mecynostomum sanguineum <small>(Beklemischev, 1915)</small>
- Mecynostomum torquens <small>Kozloff 2000</small>
- Neomecynostomum granulum <small>(Dörjes, 1968)</small>
- Paramecynostomum carchedonium <small>Kozloff, 1998</small>
- Paramecynostomum diversicolor <small>(ÃÂrsted, 1845)</small>
- Philomecynostomum lapillum <small>Dörjes, 1968</small>
- Postmecynostomum glandulosum <small>(Westblad, 1946)</small>
- Postmecynostomum pictum <small>Dörjes, 1968</small>
- Stylomecynostomum bodegensis <small>Hooge & Tyler, 2003</small>
References