G. SPONGIA. 
161 
MUSHROOM. 
43. Spongia 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 nigra. Globular, tough, and solid; 
black externally, and grey within. 
In the Bed Sea, near Suez. 
SECTION III. 
Masses pediculated, flattened, fan-shaped , simple or lohed. 
PALLET-FORMED. 
45. Spongia plavicella. 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. 
X 
