CORNISH FAUNA. 
TAe species of which there are Specimens in the Museum arc marked * 
—■*»* — 
CORNISH SHELLS. 
CLASS I. 
The ninth class of lamark’s avertebrate 
ANIMALS. 
The third Order of this Class, and first which possesses 
a Shell, is that of the 
SEDENTARY ANNULATA. 
They are formed of tubes either membranous or horny, 
e *>crusted outwardly with grains of sand and fragments of 
'ells; or solid, calcareous and homogenous. 
To distinguish these from various animals which in the 
j at e of Larva construct a case for their temporary pro- 
c hon, it is to be observed that the latter inhabit fresh water 
j *%> the former only the sea; and that the contained animal 
s w ithout eyes, soft, lengthened, wormlike, with segments 
transverse wrinkles, mouth nearly terminal, and without 
t'culated feet. It never entirely quits the shell. 
M ALDAN I A. 
DENT A LIU M. 
ENERJC CHARACTER: Tube testaceous, nearly 
re gnlar, slightly curved, gradually diminishing from one 
* to the other; open at both ends. 
• ENTALIS. Turlou’s Linneus. Pennant’s British 
oology ( vol. 4. pi. 90. Borlase’s Natural History of 
ornwal), pi. 28, fig. S. Montagu’s Testacea Britannica, 
0 • 2 > p. 494. Stewart’s Elements of Natural History, 
UtY 2 ’ - Greater Tooth Shell. The dead shell is not 
" requcntly found on many of our shores, about low water 
B 
