G. SPONGIA. 161 



MUSHROOM. 



4d, Spo^gi A peziza. Of a yellow colour ; branches 

 rising out of the cavities of stones, in the form of 

 a small mushroom. 



Charlestown, in America. 



N. B. The foregoing species is only found in the 

 cavities of stones and pieces of wood that are in the 

 sea ; they fill up the interior, and project from their 

 orifices in the form of small yellow fungi. 



BLACK. 



44. Spongia ?2igra. Globular, tough, and solid ; 

 black externally, and grey within. 

 In the Red Sea, near Suez. 



SECTION III. 



Masses pediculated,JIattetied, fan-shaped, simple or lobed. 



PALLET-FORMED. 



45. Spongia plancella. Flat, a truncated oval, 

 not very thick, and in some parts uneven ; rather 

 curved on one of its borders ; texture a little incrusted, 

 and finely porous. 



SHOVEL SHAPED. 



46. Spongia pala. In the shape of a shovel or 

 spade, fibrous and not incrusted, upright, simple or 

 proliferous, and osculated on the upper border. 



Var. B. Surface proliferous and lobed ; lobes cy- 



COr. y X 



