ACJIXOI'ODOIS HOLOTHUEIOIDEA. i ( 



\)f a iiorinauciii I'oature ul" tho Ijody conli;,'ui-atioii. llowovor, if. is 

 lost in tho preserved specimens. \'enti-ully, tlH> median amlju- 

 laei'uin is entirely naked. It was already marked, when the 

 sketch was made, by a deep groove as in the figures. A zone 

 of light yellow pedicels, forming two irregular rows, was found on 

 each side inside the series of marginal jiapillae. Tho i)edicols 

 wore ascertained by means of sections to belong to lateral am- 

 bulacra. Anteriorly, they stopped at the neck-like constriction, 

 and did not extend into tho head-like portion. 



Dorsally the papillae, which were all of a fairly uniform size 

 smaller than tlie marginal lapillae, appeared to bo irregularly 

 distributed in two longitudinal zones, each corresponding to 

 one of the dorsal amhulaci'al fields. In each zone, the papillae 

 were in three rows, standing more or l(!ss regularly alternate 

 in their positions. 



The mouth was distinctly ventral. In it 20 tentacles, each 

 with trans][>arent stem and brown crown, were found. They 

 seemed all uniform in size, i.o., there were none marked as ventral 

 by their small size. The anus was distinctly dorsal in position 

 and cii'cular in shape, with somewhat raised rim. 



Tlic color of the aninud was of a carmine red, deepest in 

 the median dorsal area. It is possible that the whole body was 

 of this deep shade when alive. 



(it'nital bundles two, red-colored and branched. Calcareous 

 ring in one specimen not distinct : in its place there seemed to 

 be some calcareous ckiposits, but no well formed pieces. In 

 another specimen tho ring was imperfect and weakly developed, but 

 the pieces could be made out as shown in textfig. (5 a. Polian vesicle 

 one, long, cylindrical, 1 cm. long. Its tip not sjx)cially colored. No 

 tentacular ampullae. Respiratory trees tolerably well developed, 



