ACTINOPODOUS HOLOTHÜEIOIDEA. 



Specimens examined : — 



151 



Description: — Tentacles 20. Yentnim flat with numerous or- 

 dinary pedicels. Dorsum convex, closely beset with papillœ. 

 These look forward in the anterior, and backward in the poste- 

 rior region, and are mostly united two by two at the base. In 

 the rest of the dorsum 3—8 papilhe, jointed at the base, together 

 form stellate figures like the petals of an open flower. In 

 the interval between these composite papillœ, there are smaller 

 ones. Calcareous deposits are dichotomously branched, slender, 

 pointed, X-shaped spicules and aggregations of innumerable minute 

 grains. 



Piemarhs .-—This is a very large-sized holothurian. Of tho 

 three specimens in alcohol, I measured two when living : they were 

 both 35x10 cm. A third specimen in alcohol measures 28 X 

 11 cm. 



The species has some extremely characteristic features by 

 which it can be easily recognized. The whole dorsum is beset 

 with large compound papillae. They are several cm. across, with 

 several rather acute lobes or processes, making a stellate figure. 

 They are evidently formed by the uniting together of several pa- 



