tiie ' 
ANGUINE SERPULA. 
Generic Character. 
Animal resembling a Terebella. 
Shell univalve, tubular, adhering commonly to 
other substances, (in many species inter¬ 
cepted internally by dissepiments at uncer¬ 
tain distances.) 
Specific Character, &c. 
SERPULA with subcylindric subspiral shell, 
with an articulated longitudinal fissure. 
Chain-Sided SERPULA. 
The genus Serpula is inhabited by a very diffe¬ 
rent race of animals from the rest of the testaceous 
tribe, and which seem to bear some analogy to the 
Amphitritce and Nereides among the Mollusca, and 
to the Scolopendrce among Insects. Few however of 
the inhabitants of the Serpula? are very distinctly 
known, and among others that of the present 
species still remains undescribed. The structure 
of the shell itself is highly singular; the tube 
of which it consists, and which in different speci¬ 
mens 
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