158 



K. MITSUKUEI : STUDIES ON 



1895«, p. 285.— KoEHLER 1895c, p. 385.— Sluiter 1895, p. 79.— Ludwig 1899, 

 p. 561.— Bedfobd 1899?;, p. 150.— Sluiter 1901?>, p. 31. 



Stichopus cylindricus Haacke 1880, pp. 46 — 7. 



Stkliopus cMoronotos IjvmYiG 1889 — '92, p. 331. 



Specimens examined : — 



Description : — Tentacles 20. Papillae on rather prominent con- 

 ical warts, forming a double row along each dorsal ambulacrum, 

 and a zigzag or double row along each side of the body. Moutli 

 surrounded by a circle of papillœ. Numerous pedicels of the 

 ventrum arranged in three longitudinal rows of which the middle 

 one is about twice as broad as the two lateral ones. Tables very 

 delicate with the spire terminating in 8 — 12 teeth. Numerous C- 

 shaped bodies present. Rosettes formed by the union of C- shaped 

 bodies rarely present (Theel, Sluiter, Ludwig). In tlie muscles 

 and viscera, rod- shaped, smooth or thorny bodies. In the wall of 

 the pedicels, thorny and latticed supporting rods. Polian vesicles 

 three. (3ne stone-canal attached to the mesentery. Color olive- 

 green. Length 20 cm. 



Eemarh : — The color of the animal, when alive, is stated by 

 Kent to be clear bottle-green throughout, and the extreme tips of 

 the papillaB orange or scarlet. The Ösliima specimen, which I was 

 able to observe alive, was deep black with a bluish tinge, the 

 tips of some papillœ being ochre-yellow, so that there seems to be 

 some variation in these respects. In alcohol the color has entire- 



