HOLOTHURIOIDEA 



391 



2. Stichopus regalis (Cuvier). (Fig. 232.) 



(Syn. Holothuria regalis Cuvier ; Hoi. columnce Cuvier ; 

 Hoi. triqnetra Delle Chiaje.) 



Body flattened on the ventral side, which forms a distinct 

 sole. Margin of body set with large papillae forming a rather 



Fig. 232. — Stichopus regalis, ventral view. Somewhat reduced. 



conspicuous brim, which continues round the anterior end, above 

 the ventrally situated mouth. Ventral side with three more or 

 less distinct series of tube-feet ; dorsal side with large, more or 



Fig. 233. — Tables of Stichopus regalis, from above and inside view, x 245. 



less distinctly serially arranged tubercles, each ending in a 

 conical papilla. Calcareous deposits tables, elongate, flattened 

 rods, and star-shaped bodies, the latter chiefly in the radii, near 

 the longitudinal muscles. The disk of the tables large, with 

 the edge entire ; rods of the spire connected by 3-5 sets of cross 

 beams (Fig. 233). Colour in life brownish, often with large, 



