Holothuria (Metriatyla)

Rowe, 1969

9 species

Tentacles 20; pedicels irregularly arranged on the flattened ventral sole, papillae usually quite large and conical and irregularly arranged dorsally, a lateral flange of papillae sometimes evident, a collar of papillae around the base of the tentacles often present, anal papillae variously developed; body wall usually quite thin, about 2 (1-5) mm thick; and gritty to the touch; body usually flattened ventrally, arched dorsally; size small to moderate, up to 200 mm; calcareous ring quite well developed with radial plates up to three times as long as the interradials; spicules consisting of well developed tables with smooth disc and spire either of moderate height or high, terminating in a few to many small spines, tables rarely absent, buttons simple, with moderate seized irregularly arranged knobs and three to ten pairs of relatively large holes. (Rowe, 1969)