138 



K. MTTsrKiTJ : sTi'Dirs ox 



voiitral jx-dieols of tlio lav^^o Oshiina specimens above mentioned. 

 The South Nogvos specimen is 8 cm. long and 3.5 cm. iHoad. 

 It is much rouiiher to the touch tlian any specimen in (lie ahove 

 two sets. In coloring it much resembles the Oshima siKX'imens. 

 The ventral pedicels liave well-developed end-plates. The dorsal 

 paj)ill;v, at least some of them, also have well-developed eiul-iilates. 

 The Liu-Kiu specimens all measure about 4..") by _ cm. The 

 slvin, which is thin, is quite rough to the touch. Their color re- 

 .sembles on the whole that of the Oshima specimens, but is some- 

 what darker on the dorsum and dirty white on the ventrum. (hi 

 two of thenj there is a narrow median longitudinal groove — a 

 structure not distinct in any of the other specimens in their jires- 

 ont contracted state. The end-plates are found in botli the ven- 

 tial and the dorsal ambulacral appendages. 



The three specimens from Torres Strait (No. 12.")!)) are ro- 



muikable in that they are almost blade in color on the dorsum 



and on the ventrum havi> a tolerably 



r\n -.i^ftA^-^ i~\av\<. shade of yellowish brown. They 



y^n' y\ yxs Q) I <i>'^^ 1'^^*^ other s]H^cimens in every other 



detail. 



Calcareous deposits are very abund- 

 ant, especially in the ventral peri- 

 some. They consist of tables outside, 

 and a bed of buttons inside. It will 

 be seen from the figures (textlg. 24 h, 

 c) that the tables in these specimens 

 have a rather solid irregularly quadri- 

 lateral disk with smooth margin. The 

 disk is frequently ii-regular and incomplete, in whicli case the 

 central opening is often eccentric in ]iosition. In complete disks 



Textfig. 24. 

 llolothuria scabni ; a— Calciueo is 

 ting ; 5, c — Tnbles of dotsum : ij 

 — Button o! ventnim. (?>— (J x 3X)). 

 I— Intem»clmlii\ ; R — luulialui. 



