G. SPONGIA. 
179 
and very porous ; branches compressed, but dilating 
towards the summit, and longitudinally channelled ; 
texture fibrous, spongy, slightly incrusted, having nu- 
merous and dispersed oscules. 
CURRY-COMB. 
127. Spongia strigiiata . Stem short, and nearly 
cylindrical, dividing into six or eight flat branches, fan- 
shaped, and stuck with numerous and unequal risings, 
which are slightly compressed, and appear disposed in 
longitudinal ranges. 
nervous. 
128. Spongia nervosa. Nearly fan-shaped, and 
branching; branches divided, but partly coalescent, 
flattening and dilating a little towards the summits, 
where they are almost laciniated ; nerves longitudinal, 
slender, and reticulated, more numerous on one sur- 
face than the other. 
Indian Ocean. 
BRAMBLE. 
129. Spongia rubispina . Branching; the fan-like 
branches stuck with prickly tubercles resembling those 
of the bramble, and covered with a leathery crust. 
FIR. 
130. Spongia abietina. Pillared, branching, and 
expanded ; ramifications narrower, and more pliable, 
covered with thorny appendages, which are terminated 
by a horny filament. 
ELONGATED. 
131. Spongia elongata. Caudiform, and cylin- 
