G. NESEA. 
113 
ments; and also that these Polypidoms are wholly 
enveloped in a mucilaginous substance, which is of a 
green colour. 
These Polypidoms are of a membrano-calcareous 
substance, of a bright green in a living state, becom- 
ing white by desiccation, and rarely exceed a deci- 
metre in height ; they are found in the Antilles, and 
on the shores of the islands at the entrance of the 
Gulf of Mexico ; they adhere to rocks and solid sands 
by numerous and rather long fibres. 
PHCENIX. 
!• Nesea phoenix . Stem rising from a fibrous root, 
simple till it reaches the brushy head, whose branches 
are composed of several rows of articulations united 
and convergent, forming an oblong tuft. 
Coasts of the islands of Bahama. 
ANNULAR. 
2. Nesea annulata. Stem simple and in rings, or 
strongly marked with transverse wrinkles. 
The Antilles. 
WOOLLY. 
3. Nesea eriophora. Stem cylindrical or slightly 
compressed, short, smooth on the surface ; branches 
as fine as the hair of wool; the full size about four 
centimetres. 
The Antilles. 
PENCIL-SHAPED, 
4. Nesea penicillus. Stem cylindrical, and nearly 
Cor. 
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