ACTINOPODOUS HOLOTHUßlOIDEA. 



spicules and their scarcity. 



189 



44, Lœlniogone selenkai, sp. n. 



(PI. v., figs. 48—51 ; textfig. 35). 

 Specimens examined : — 



Description: — Size of the largest measured, 4.7 x 0.8 cm. ; 

 the smallest 2.1x0.6 cm. The perisome is entirely transparent 

 and without any coloration : the colors seen in the animal being 

 due entirely to those of the viscera seen through the perisome 

 and to the crimson pith of the dorsal papilla?. Mouth faces 

 somewhat ventrad. Tentacles 15, with the crown in life light 

 yellow and with carmine- colored spots around its edge. The 

 dorsum vaulted, the ventrum flat. The ventral odd ambulacrum 

 entirely naked. Pedicels on the lateral ambulacra unusually 

 slender (2 — 3 mm. long) and numerous (25 — G3 on each side), 

 mostly in a single row. Papillœ on the dorsal ambulacra in a 

 single row, less numerous and broader than those of the lateral 



