Anapta

Semper, 1868

3 species

Tentacles 12, pinnate. Deposits in the form of oval or elongate grains, or entirely absent. General form synaptoid. (Fisher, 1907)

Tentacles pinnate 12, digits 2-6 on each side and a long terminal one. Cartilaginous ring wanting, Polian vesicles several (5-7). Stone canal single. Anchors, perforated plates, wheels, and sigmoid bodies entirely wanting, the only calcareous particles in the skin being small oval or ellipsoid bodies and even these may be wanting. (Clark, 1907)