170 
CLASS III. — ORDER I. 
the form of a club, fibrous, and irregularly hollowed 
on the outside. 
Var. B. Semi-proliferous, opening into a kind of 
compressed calix, cavities larger and fewer. 
Kangaroo Islands, in Australasia. 
TUBULOUS. 
87. Spongia tubulosa. Branching, cylindrical, 
irregular, waved, osculated, and with a few strong 
hairs ; texture fibrous, rather finely reticulated. 
Indian ocean. 
PRICKLY. 
88. Spongia muricina . Tubes cylindrical and 
nearly branching, long, and covered with sharp and 
scattered tubercles. 
Var. B. Tubercles smaller and more numerous. 
Seas of Australasia. 
CONJUNCT. 
89. Spongia confederal a. Tubes upright and nu- 
merous, united in a mass that is rather thick and 
compressed, the upper border being sometimes di- 
vided in digitations ; some of the tubes adhering only 
to the base of the mass. 
Seas of Australasia. 
INTESTINAL. 
90. Spongia intestinalis. Lobed, fibrous, stiff, and 
internally hollow; lobes unequal, cylindrical, and 
fistular, with holes or clefts. 
Mediterranean ; near Cette. 
