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CLASS III.— ORDER I. 
PINNATED. 
95. Sfongia pennatala. Stem arched and twisted, 
supporting flat leafy pinnies, which approximate and 
stand out in a sort of crested tuft; surface incrusted, 
and very porous. 
Australasian seas. 
ARTICHOKE. 
96. Spongia cactiformis. Pediculated and branch- 
ing; expansions flat, cuneiform, fan-shaped, rounded 
or truncated at the summits, nearly lobed, prolife- 
rous, and slightly incrusted ; small dispersed exca- 
vations on the surface. 
Southern seas. 
CURLED. 
97. Spongia crispata. Foliaceous expansions, 
proliferous and conchoidal, turned in like the border 
of an ear ; they are irregular in form, and appear 
blistered, coalescing in some parts, and unequally 
punctured ; texture fibrous, and very fine. 
Southern seas. 
BLACK-PLUMED. 
98. Spongia basta. Expansions fibrous, leafy, 
turned in as if curled, laciniated, enclosed one 
within the other, and appearing like a small black 
plume ; fibres bare, rather stiff, and disposed like a 
loose net. 
Indian Ocean. 
LAMINATED. 
99. Spongia lamellaris . In thin parallel laminae. 
