G. SPONGIA. 
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CAVERNOSE. 
4. SpongIA cavernosa . A kind of conic oval ; stiff* 
rather hard, and very full of cavities ; surface stud- 
ded with small risings, and irregularly porous* 
American seas. 
CARIOUS. 
5. Spongia cariosa . Shapeless and irregularly 
lobed ; furrowed, and caverned, as if bitten ; texture 
fibrous, rather finely reticulated with irregular meshes ; 
surface covered with crevices and holes. 
Indian Ocean. 
LICHEN-FORMED. 
6. Spongia licheniformis. Sessile, rugged, and 
clustered ; fibres very loose, crossing and anasto- 
mo sing together, branching and tough. 
Found in many seas, and varying in form. 
BEARDED. 
7. Spongia barba. A long mass, loosely reticu- 
lated, strongly resembling a goat's beard, or the Li- 
chen barbatus. 
On the Spondylus Goederopus of the Mediterra- 
nean. 
FASCICULATED. 
8. Spongia fasciculata. Stiff, and nearly globu- 
lar, formed by bundles of fibres, prism-shaped and 
branching. 
Mediterranean. 
LACERATED. 
9. Spongia lacera . Sessile, oval, and convex; 
Cor . 
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