Achlyonice

Théel, 1882?

4 species

Anterior end body bent strongly ventrad, anus turned dorsad. Dorsum vaulted, flattened posteriorly. (Ohshima, 1915)

Tentacles 10-12. Deposits tripartite, rod shaped or absent. Calcareous ring consisting of 5 isolated pieces, each having a varying number of arms. (Hansen, 1975)