12 



K. M1TSÜKURI. 



All these specimens were transparent and white. This color was 

 due to the coat of armor produced by calcareous bodies characteristic 

 of Stage I.* — large disked tables with tall spires united by 

 several cross beams — which covered the body thickly their è | "0 | 

 bases even overlapping one another when slightly con- f , 

 tracted. The spires standing out from the surface of the ? o|| 

 body could be detected eveu with the naked j ; ojs 

 eye or with a very low power and gave the I ijâ jsP 

 spiny appearance to the 

 Tentacles were ten in number. In 

 specimen of July IS., ventral pedicels were in three rows 

 with only 3—4 in each row (Fig. 3). In Fig. 4 is given 

 Fig. a young another specimen 3.5x1.0 mm. from the lot of July 29 



individual older 



than that of Fig. with a few more pedicels and some dorsal popillae. 



3 • X 5 • 



When these young were kept in glass-vessels, they seemed to 

 prefer quiet dark places without any current. This is the reason 



whole animal. " 



Fig. -. —A young 

 the individuili. Xto- 



* See K. Mi i suKLRi : On Changes which are found with Advancing Age in the Calcare 

 ous Deposits of Stichopus japonicus Selenita. Annoi, Zool. [ap. Vol. I. p. 31. 



