184 
CLASS III. — ORDER I. 
CROSS-BARRED. 
151. Spongia clathrus. A conglomerate tuft, nearly 
globular, soft to the touch, composed of short branches 
which are tortuous, anastomosed and osculated, with 
obtuse and swelled summits. 
COALESCENT. 
152. Spongia coalita. Base an expanded mem- 
brane, enveloping many bodies, and dividing itself 
into proliferous branches, soft and pleasant to the 
touch ; surface irregularly reticulated. 
Northern Ocean. 
PITTED. 
153. Spongia foveolaria. Branching, long, and 
blackish ; branches anastomosing, nearly cylindrical, 
and conical at the summit ; the outside covered with 
small unequal pits having ragged borders. 
Mediterranean. 
LONG-FINGERED. 
154. Spongia macrodactyla. Branching and long; 
branches nearly alternate, long, and partly com- 
pressed, unequal, attenuated, upright in the lower 
part, and curved in the upper. 
Indian Ocean. 
CLUSTERED. 
155. Spongia botryoides. Branching, diffuse, but 
small ; branches charged with triple spines, and sup- 
porting small oblong- oval lobes, hollow, and open 
at the summits, finely porous, and in drapery. 
Coasts of England and France. 
