360 57. Spong. S.THALASSIOPHYT^E. PLcell.aph. 
Thallus fanshaped, palmated, or digitate; fibres in deli- 
cate network, pale brown changing to yellowish or reddish 
brown, coarser and stiffer than common sponge. 
c. Thallus sessile , simple or lobed , often erect . 
6. Spongia limhata . Lohed sponge* 
Fibres formed into circular pore9 resembling lace. 
Spongia Iimlmla, Montague Wern. Tr. 2, 111. 
Sea-shore. 
Thallus whitish, firm, elastic, pores very large, circular, 
fibres smooth. 
7. Spongia fruticosa. Shrublike sponge . 
Thallus tough, elastic, in network ; fibres smooth, slightly 
connected, distant. 
Spongia lichenoides, Valias Zoopk. 378. 
Spongia fruticosa, Montague Wern. Tr. 2, 112. 
Sea-shore. 
Thallus 6 or 7 inches long, and half as wide, irregular, 
very light, elegant; fibres distant; network very irregular. 
8. Spongia fragilis. Brittle sponge. 
Thallus brittle, friable, in coarse network; fibres wrinkled 
as if covered with minute sand. 
Spongia friabilis, Montague Wern. Tr. 2, 114. 
Sea-shores. 
Thallus brown, breaking between the fingers and soon 
rubbing into a powder like sand with a micaceous lustre. 
9. Spongia parasitica. Parasitic sponge . 
Thallus coarse; form indefinite, determined by the body 
upon which it creeps; fibres imbricated. 
Spongia parasitica, Monlague Wern. Tr. 2, 114. N 
On sertularise. 
10. Spongia Java. Honeycomb sponge . 
Thallus irregular, rather hard, brittle, extremely porous. 
Spongia fava, Montague Wern. Tr. 2, 115. 
Sea-shore. 
Thallus 8 inches long, 2 broad, and half an inch thick, 
resembling a piece of old worm-eaten cork. 
