Genus Bathyplotes Östergren, 1896

Diagnosis.

Tentacles 15–20. Mouth ventral, anus dorsal, subdorsal or nearly terminal. Skin rather thick. Body with sole-like ventral side, usually with marginal appendages. Midventral ambulacrum with a few tube feet or naked. Ventrolateral tube feet arranged in a single row or multiple rows. Dorsal papillae more or less distinctly arranged in rows. Tables with cross-shaped disc and a spire formed by 1–5 pillars, usually with several transverse beams (rarely without transverse beams); C- shaped bodies may be present [adapted from Solís-Marín 2003: 124].

Type species.

Bathyplotes natans (Sars, 1868) by original designation.

Type locality.

Lofoten, northern Norway, depth 366– 549 m.