SPONGES. 



17 



Those from the beach are loaded with sand, spines of the 

 common and purple heart urchins, bristles of the sea-mouse ; 

 and many starfishes seek refuge in their interstices. 



Chalina limbata, Bowerb. ; vol. ii. p. 373. 



Not uncommon under stones in tidal pools, either coating 

 the surface of the stone or attached to the stems of Coral/in; 

 officinalis. 



R.M. p'uixit. 



