248 



K. MITSUKUEI : STUDIES OX 



tables, especially the small ones, have a well- developed spire (a), 



but it is not so firmly and regularly developed as in the tables 



of aspidochirote forms. The fom- columns are more or less bent, 



and the cross-beams are irregular, so that the holes are arranged 



in a more or less net-like manner. 



The teeth at the top are generally 



not very distinct. The supporting 



rods of the pedicels are modified 



tables, but here the disk is much 



narrower, rod-like, and transverse 



in position, and is supplied with 



fewer holes, of which four or more 



are situated in the dilated middle 



parts of the disk (c). The spire 



is also more or less irregular. 



According to TheEL, C. populi- Textf ig. 49. 



. r^ • ,-, 1 ; 1 Oiicumsrla multipes : a — Smiill table with 



jera Stdipson is the only other ,,,u.j,^,i,p,^, ,^,i,, . ,,_T,ti^ ^^iti, ^,^„^^,, 

 species with tables only. But ^^"^^ = '^-^"pp'^'^^s rod (x 210). 



Thicel is inclined to think that these are of a different form in 

 that species. At any rate, Theel's C. multipes is the only species 

 of which the description is unmistakable. Again, this species is 

 said to be undoubtedly allied to C. loncjipeda Sejiper and v. 

 Marenzeller, which species is recorded by the latter author from 

 both China and Japan. While indeed its calcareous deposits (Taf. 

 XIII., Fig. 9) and calcareous ring (Taf. XIV., Fig. 7) have some 

 resemblance to same of the present species, it is so totally 

 different in its general configuration and in the presence of pedicels 

 in the ventral interambulacra, that I am inclined to maintain the 

 specific independence of C. multipes from C. loncjipeda. 

 Loccdity : — Yokoliama (Theel '86) ; Hokkaido. 



