Ceto

Pawson, 1970

1 species

Psolids with five conspicuously radially placed oral valves. Anus with five or more inconspicuous valves. Sole with extremely numerous tube feet in all three radii, and scattered in two interradii. Large dorsal scales covered with leathery skin. Dorsal surface with scattered pores which contain tube feet, and which pass through or between scales. Tentacles 15. More than 25 Polian vesicles. (Pawson, 1970)