Gegenbaur, 1857
Radial canals 16, between each and next an intracircular network of anastomosing canals communicating with the ring canal; rhopalar radial canals 8, extending to umbrella margin; the interrhopalar canals also 8, extending only to ring canal; mouth-arms pyramidal [Catostylus tagi ov].
Genus Catostylus