Burmeister, 1837
Description
Elongate and worm-shaped sea-cucumbers of the Order Apoda (tube-feet absent). The calcareous ring is often with more than 5 interradial pieces; the radial pieces are often perforate. Usually small ciliated funnels present in the body cavity. No Cuvierian organs. A pair of statocysts at the base of each radial nerve. The calcareous deposits are mainly anchors and anchor plates, wheels or sigmoid bodies.
In the North Sea six species of this family are found:
- Labidoplax buskii
- Labidoplax digitata
- Leptosynapta bergensis,
- Leptosynapta decaria
- Leptosynapta minuta
- Leptosynapta inhaerens