Family KERONIDAE Dujardin, 1840

Syn.	Lacazeidae

Cirri generally in several oblique rows across the ventral surface of the body; body shape variable, from broad to elongate, even tailed in some species; transverse cirri present; found in various habitats, including sand, and one species well-known ectocommensal on Hydra.

[Nomenclatural note: it is Ehrenberg's Kerona which has been accepted here for more than 125 years, although the generic name was actually first proposed by O. F. Müller (see further remarks under the family Oxytrichidae, below). Eschaneustyla may be out of place here.]

Eschaneustyla Stokes, 1886. Several species.
Kerona Ehrenberg, 1835 [non O. F. Müller, 1773] . Single species.
Lacazea Dragesco, 1960. Single species.
Incertae sedis:
Epiclintes Stein, 1862. Few species [one an Uncinata?] .