Genus Thyone
The genus Thyone contains small to medium-sized sea cucumbers with tube feet scattered over body, and ten tentacles (lower two are smaller) (Genus Thyone[/l]). [l][m]Glossary[/m][r]Spicule[/r]Spicules, when present, are tables not buttons.
Remarks: Clark (1932) reported another species, T. perforata, from Low Isles, dredged from mud and gravel in 20 m, it was grey, small, cylindrical with brown tentacles and had a hard anal papillae. Clark (1938) reported two other species, a small white form, T. dura, (called alba by Clark) from sandy mud and a larger white form with dark papillae, and T. perissa - a species of doubtful status, from a rock hole from northwestern Australia. A revision of this genus would seem warranted.
Species in this genus:
Thyone grisea Clark, 1938
Thyone micra Clark, 1938
Thyone okeni Bell, 1884
Thyone papuensis (Théel, 1886)