Benthothuria

Perrier, 1898

5 species

Twenty Tentacles; stone canal penetrating the body wall; with well defined sole, surrounded by a continuous series of conical papillae, which forms a very distinct border. On ventral side, a double series of pedicels along the odd ambulacrum and on the posterior ???? of the body. A double series of lateral pedicels placed on the posterior ???? of the body in the ventral ambulacra. Dorsally irregularly distributed ambulacral and interambulacral papillae. Two tufts of genital organs. Deposits absent. (Deichmann, 1930)

Body elongate, little broader than high, marginal fringe inconspicuous. No deposits in body wall. Filiform appendages on dorsal side of body. Midventral radius with some posterior pedicels. (HBF)