SCYPHIDIUM LONGISPINA. 29 



imately spherical shape to the entire rosette. The convex 

 terminal disc consists of 6, small, recurved teeth (fig. 8). 



3. Jlicrodiscohexasler. This (PL II., fig. 9) is clearly dis- 

 tinguished from the above by its small size and by the more 

 numerous and exceeding y fine terminals. It is found in sparse 

 distribution both subdermalh^ and subgastrally. The shape is 

 spherical with a diameter of only 23-25 /^. The terminal disc 

 is so minute that it appears simply pinhead-like. 



Soft Parts. 



As the type-specimen was thrown into alcohol at the place 

 of capture, I was able to make some observations on the soft 

 parts, which may be worth recording in brief. All my sections 

 are stained with borax-carmine. Figs. 10 and 11, PL IL, show 

 the general appearance of the soft parts in section. 



T'he dermal membrane is represented for the most part by 

 a sparse quantity of quite thin trabeculse running between the 

 rays of derraalia. It is membranously developed only here and 

 there in limited areas between closely situated parts of certain 

 dermalia. 



The cup-like or thimble-like chambers measure 100 /-< in 

 average diameter. Examined under very strong magnification 

 (Zeiss' homog. immers. system), its wall or the membrana reticula- 

 ris exhibits distinctly open meshes. The delicate beams consist 

 of granular protoplasm which is scarcely stained by the coloring- 

 reagent (PL IL, fig. 14). Each nodal point, as seen surface on, 

 is occupied by a faintly colored and clear looking nucleus, con- 

 taining a few granules in its interior. Its boundary can not be 

 said to be well defined but is often sufficiently indicated by the cyto- 



