ACTINOPODOUS HOLOTHURIOIDEA. 



spicules and their scarcity. 



44. Ijt'tnioffone seleiikai, sp. n. 



(I'l. v., figs. 48—51 ; textfig. o5). 

 Specimens examined : — 



189 



Description: — Size of tlie largest measured, 4.7 X 0.8 cm.; 

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

 and without any coloration : tlie colors seen in the aiiitnal liciiig 

 due entirely to those of the viscera seen through tlic yx'risome 

 and to the crimson pith of tlie dorsal papilkT-. Moiitli faces 

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

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

 dorsum vaulted, the ventrum flat. The ventral odd ambulacrum 

 entirely naked. Pedicels on the hxteral ambulacra unusually 

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

 mostly in a single row. Papilla' on tlie dorsal ambulacra in a 

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



