﻿220 -'ENDEAVOUR- SCIENTIFIC RESULTS. 



tributary furrows. Often, a single furrow is continuous be- 

 tween the centres of two adjoining asterisks. That some- 

 special significance attaches to these furrows is indicated by 

 the occurrence along them of "pores" of distinctW larger size 

 than any to be found elsewhere on the surface. Although; 



n 



Pig- -^5-" Clathria rnbens. a Principal styles, 

 b Auxiliary styles c Acanthostyles. d Chela, 

 e Toxa. 



these "pores" are probably exhalant openings, it would 

 appear (from a single specimen rather imperfectly preserved 

 m alcohol) that, in the living condition, the\' are roofed over 

 by dermal membrane 



The largest specimen — that which is figured herein — 

 measures 450 mm. in height and 250 x 130 mm. in its greatest 

 transverse dimensions. The older portions of the sponge are 



