E. CUKVISTELLATA. 



219 



measuring 7Ô-100// — on an average 90/^ — in diameter (against 



50-70// of E. owenl). The rays, both 

 principal and terminal, are somewhat 

 stouter. (Compare the annexed wood- 

 cuts with PL VI, figs. Ö & 6). More- 

 over, the smooth and finely attenuated 

 terminals, of which there are 3 or 4 

 (sometimes 5) to each short principal, are 

 near their free ends ahvays more or less 

 distinctly curved, frequently in an almost 

 hook-like manner. For the rest of their 

 length, the terminals are nearly straight. 

 The bending takes place apparently 

 without any definite rule as to its direc- 

 tion. The terminals belonmns: to the 

 same principal are sometimes bent all 



alike outwards, i. e., away from the axis of the principal. At 



other times they may be bent some outwards and some inwards, 



or in any intermediate direction. 



Two oxyliexasters from 



E. curvistellata. 



Magnified 440 X. 



Finally, let it be mentioned that the specimen contained in 

 its gastral cavity a pair of Spongicola venusla, known also to in- 

 habit E. aspergillum, E. marshalli and E. oiceni. Besides, I 

 have a specimen of Ilyalonema sieboldi harboring a pair of the 

 same Crustacea. The identity of the inmate may be taken as 

 suggestive of similar bathymetrical and other conditions under 

 which the above-mentioned Hexactinellid species live. 



