Plicastichopus

Heding, 1940

2 species

Pseudostichopus-like holothurians with a distinct pygal furrow and large lateral papillae each with one terminal and several lateral tube feet. There are tube feet scattered all over the dorsal side, those along the dorsal ambulacrum being larger than the others. On the ventral side there are either no or very few and rudimentary tube feet. Tentacles 20. Polian vesicles one or two, and stone canal quite lacking or very rudimentary mesentery, with faint traces of a madreporite. Respiratory trees paired but with a common origin. Calcareous deposits lacking in the body wall, but present in the tentacles and in the terminal ends of the tube feet. (HBF)