(Selenka, 1867)
H. (Microthele) nobilis is a black sea cucumber, often with a fine sand covering. It is a large, stout species, firm and rigid, with prominent lateral papillae and anal papillae (usually 5). It has translucent cuvierian tubules. Spicules are stout tables and fenestrated ellipsoids (H. nobilis spicules[/l], [l]h_nobilis_spicules_2.jpgH. nobilis spicules 2[/l]). H. nobilis may be found on [l][m]Glossary[/m][r]Reef[/r]reefs, and exposed on rubble or sea-grasses.
Remarks: A variegated black and white variant of 'nobilis' is known in Queensland. This may prove to be H. (Microthele) fuscogliva a recently described species (Cherbonnier, 1980).