114 
CLASS II.— ORDER I. 
equal throughout its length ; branches numerous,, 
filiform, and united in a headc 
Caribean sea. 
PYRAMIDAL. 
5. Nesea pyramidalis. Stem very large at the 
base, and gradually diminishing as it rises, crowned 
by some branches of nearly a millemetre in dia- 
meter, but not so numerous as in the preceding 
species. 
The Antilles. 
TUFTED, 
6. Nesea dumetosa. Branches short, cylindrical, and 
irregular ; growing so close as to touch each other, 
and forming a mass by the desiccation of the gelati- 
nous substance which surrounds them in a living 
state ; each branch is more than a millemetre in 
diameter, and three or four centimetres in length.— 
Plate 8. fig. 3. a. B. 
The Antilles. 
GALAXAURA. 
Plant-like, dichotomous, articulated, fistular, 
and cylindrical; cells, if there are any, are invi- 
sible. 
Preceding authors have differed in the classification 
of these Polypidoms, which in their characters ap- 
