Psychropotes

Théel, 1886

11 species

Body flat anteriorly, rising to height posteriorly, terminating in a long tail-like prolongation which issues from the dorsal side near the posterior end. Mouth and anus ventral; tentacles 10-18. Usually a double row of tube feet along the mid-ventral ambulacrum. Lateral tube feet large conical only the hindmost more or less united by a web. Dorsal papillae small insignificant. Deposits strong cross shaped bodies, often different in the outer and inner dermal layer; those of the ventral smaller than those of the dorsal surface. (Mortensen, 1927; Deichmann, 1930)

Anus ventral. Unpaired dorsal appendage present. Circumoral papillae absent. Tentacle discs of a fixed shape, rounded in outline and with marginal knobs. (Hansen, 1975)