Mr. II. J. Carter on the Hexactinellidae. 361 



(fig. 6) ; or rays multitudinous, of unequal length, without 

 heads, flexed outwards and arranged en fleur-de-lis ; pappiform 

 (figs. 12 & 15). 



Sympagella nux, Schmidt. Florida. (15) 



Spicules held together by amorphous sarcode. 



Species sessile, vasiform, deeply excavated, possessing a rosette. 



Rosette many-rayed; rays of unequal length, straight, 

 capitate (fig. 6). 



Askonema setubalense, Kent. Portugal. (16) 

 Species stalked, goblet-shaped. 



Rosette few- or many-rayed : rays few, of equal length, 

 straight and pointed (fig. 2) ; or multitudinous, of unequal 

 length, straight and capitate: pappiform (figs. 8 & 16). 



Crateromorpha Meyeri, Gray. Cebu, Philippines. (17) 



Species sessile, sac-shaped. 



Rosette many-rayed ; rays multitudinous, of unequal length, 

 straight, and capitate ; pappiform (Atlantisch. Spongienf. 

 Taf. i. fig. 6). 



Holtenia Pourtalesii, Schmidt. Florida. (18) 



Species oblong, excavated, provided with anchoring-spicides. 



Rosette few- or many -rayed : rays few, of equal length, 

 straight, and pointed (fig. 3), or spino-capitate (fig. 5) ; or mul- 

 titudinous, of unequal length, without heads, flexed outwards 

 and arranged en fleur-de-lis ; pappiform (figs. 12&15) : or some- 

 times many-rayed with rays straight and capitate (fig. 6). 



Anchoring-spicules all smooth, stout, and terminating re- 

 spectively in heads formed of four equally stout recurved spines 

 or hooks ('Annals,' 1872, vol. ix.pl. xxi. fig. 7, &c). 



Rossella antarctica, Carter. Antarctic Sea. (19) 



philippinensis, Gray. Philippines. (20) 



velata, Wy. Thomson. South side of Faroe 



Islands. (21) 



Species tubular, unbranched, closed at the extremity. 

 Rosette the same as in Euplectella aspergillum. 



Habrodictyon specioswn^Nj. Thomson. Moluccas. (22) 



corbicula, Wy. Thomson. ? (23) 



