40 



Pub. Puget Sound Biol. Sta. 



Vol. 2, No. 33 



4. Cucumaria pulcherrima (Ayers) Lampert. 



Pentamera pulcherrima Ayers ; Thyone pulcherrima Semper 

 Very small, usually less than 5 cm. long; ends of body rather pointed, 

 curved upward making ventral radii longer than dorsal ; tube- feet many, 

 arranged in 2 crowded rows along each radius; tentacles 10, much 

 branched, 2 ventral ones smaller; calcareous plates symmetrical or irregu- 

 lar, in crowded groups in body walls, rod-like in tips of feet, small and 

 irregular in tentacles ; calcareous ring well developed, radial pieces with 

 2 long slender posterior prolongations (Figs. 40-42). Color white or pale 

 gray; almost transparent. — Numerous, in about 35 fathoms, near Olga. 



Genus Stichopus 

 Extremely large forms with large conical projections on the dorsal 

 and lateral surfaces ; freely moving. 



1. Stichopus calif ornicus (Stimpson) Edwards. 



Forms very large, sometimes 50 cm. long, almost cylindrical; ventral 

 sole slightly developed; tube-feet many, in longitudinal rows, on ventral 



M. Bush. 



PLATE 11 



Fig. 56. Plates from calcareous ring of Stichopus californicus. X 4. 

 Figs. 57, 58. Calcareous deposits from body wall of Stichopus californicus. 



X 258. 

 Fig. 59. Calcareous deposit from tube foot of Stichopus californicus. 



X 258. 

 Figs. 60, 61. Calcareous deposits from tentacles of Stichopus californicus. 



X 258. 



