THE 
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MURICATED PINNA, 
Generic Character. 
Animal allied to a Limax. 
Shell subbivalve, fragile, gaping at the upper 
part, emitting a beard or tuft of silken fila¬ 
ments. 
Hinge toothless, the valves coalescing together. 
t — 
Specific Character , &c. 
PINNA with striated shell, with acute, ovate, 
concave scales. 
Gualt. test. t. 79. f. d, 
Seb. 3 . t. 92. 
Ohs. Several of the Pinna; are considered by 
Linnceus as varieties rather than distinct 
species. 
The genus Pinna, of which some species grow to 
a very large size, is distinguished, among other cir¬ 
cumstances, by the remarkable power which the in¬ 
habiting animal possesses, of affixing itself at plea¬ 
sure to rocks, or other substances, by a vast number 
of fine silky threads or filaments, which it forms by 
extending 
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