Stylochidae is a family of Turbellarian Flatworms. It includes the species Stylochus zebra, which usually lives in shells occupied by the hermit crab Pagurus pollicaris, though it can sometimes be found free living on rocks and pilings.
The family contains the following 6 genera containing 36 accepted species:
CryptostylochusCryptostylochus coseirensisCryptostylochus hullensisCryptostylochus koreensisDistylochusDistylochus isiferDistylochus martaeDistylochus pusillusKatariaKataria gloriosaLeptostylochusLeptostylochus capensisLeptostylochus elongatusLeptostylochus gracilisLeptostylochus novacambrensisLeptostylochus pacificusLeptostylochus palombiiLeptostylochus polysorusStylochopsisStylochopsis ellipticusStylochopsis ponticusStylochusStylochus alexandrinusStylochus argusStylochus bermudensisStylochus cinereusStylochus conglomeratusStylochus crassusStylochus ellipticusStylochus flevensisStylochus frontalisStylochus limosusStylochus luteusStylochus mediterraneusStylochus neapolitanusStylochus pillidumStylochus plessissiiStylochus pygmaeusStylochus teuricusStylochus vesiculatusStylochus zanzibaricusStylochus zebra