92 



K. MITSUKÜEI : STUDIES ON 



are few and far between, so that they may easily be over- 

 looked. It was a long time before I was sure of their 

 presence. I am still doubtful whether in some specimens 



Textfig. 19. 

 Jlolothurin luhrica var. mœhii: a — Tal le ; h, c — H shaped lodies; 

 f?—/- Granulated rods. (xSOO). 



they may not be entirely absent. As I have stated above, I 

 can not be sure whether they are the smooth rods referred to 

 by Ludwig in his description of //. mœhii, for he does not men- 

 tion their size or frequency. I see no reason, however, for 

 assuming them to be different, and in Li^dwig's specimens they 

 may have been somewhat more abundant than in mine. 



In the wall of the ventral pedicels, close to the end-plates, 

 are found H- shaped supporting rods as described by Ludwig 

 {b, c). These I have found in all the adult specimens except 

 those from Shimo-Koshiki, Satsuma (No. 1257). The said bodies 

 we may consider as characteristic of var. mœhii. Besides them 

 there are sometimes more open supporting rods. 



In addition to the three kinds of deposits above mentioned, 

 there occur very slender, small, fine, non-granulated rods with at 



