G. SPONGIA. 
165 
compressed, and black; striae thorny, and longitu- 
dinally placed on each surface. 
Supposed to originate from America. 
BELL-SHAPED^ 
Cl. Spongia campana. Large, rough, and stiff, in 
the form of an upright bell ; fibres incrusted, inner 
surface osculated. 
American seas. 
TURBINATED. 
62. Spongia turbinata. In the form of a long 
funnel, rather narrow, stiff, and very simple ; inter- 
nally marked with longitudinal striae and small os- 
culiferous jagged risings. 
American seas. 
CRUCIBLE. 
63. Spongia msculum. Turbinated and thick ; 
surface smooth ; border woolly. 
CABBAGE-FORMED. 
64. Spongia brassicata . In the form of a large 
open foliated cup, or resembling a cabbage whose 
under leaves alone are expanded. 
Indian Ocean. 
GOBLET-FORMED. 
65. Spongia cyathina. Crater-form, simple and in- 
crusted ; surface elegantly and very finely cleft, sown 
with small oscules. 
Southern seas. 
