260 Proceedings of the Royal Society of Victoria. 



The dermal skeleton is a very beautiful, close-meshed reticula- 

 tion of foreign bodies (broken spicules) held together by spongin. 

 The meshes of this dermal network are nearly circular and about 

 0"18 mm. in diameter. In some places the foreign bodies form 

 an uninterrupted layer. 



Megasc/eres, long, smooth, slender styli, usually slightly 

 curved and finely pointed, measuring about 0-27 by 0-004 mm., 

 but variable and sometimes a good deal longer. 



Microsc/eres, very long and slender, hair-like rhaphides, 

 usually collected into long fibrous whisps. 



R.N. 478 (x, 20 f ; " coral red "). 



