G, AETEA. 
65 
form of a horn, with an oblique opening, having a 
cil shorter than the celh Plate 3. fig. 5. A. 
European seas. 
AETEA . 
Polyp i DOM, with a rampant and branching stem ; 
cells solitary, opaque, and tubular, in the form of 
clubs, and arched ; opening at the side. 
This Polypidom appears to unite the present Or- 
der with that which follows, having a rampant stem 
from which the cells issue ; but it differs essentially 
from the second Order, in the form of its undulated 
stem, which is branched and swelled at stated dis- 
tances, and also in the form of its cells ; it is therefore 
truly an intermediate species. 
This genus as yet comprises only one species, 
very common on the marine plants of the European 
seas ; they embellish these vegetables by the pearly 
whiteness of their cells, which forms a beautiful con- 
trast with the brilliant red of the Plocamis, on which 
the Aetea anguina is frequently found : one might ima- 
gine them many-clefted leaves of red coral, covered 
on all parts with hairs of silvery white. 
SERPENTINE. 
1. Aetea anguina . Described in the genus : is 
found both in the European and Australasian seas,— 
Plate 3, fig. 6. A. 
Cor . 
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