TESTACEOUS ANIMALS* 
MULTIFALVE SHELLS . 
BARNACLE. 
GENERIC CHARACTER. 
Shell fixed by its base, and furnished with several unequal 
erect valves. 
SPECIFIC CHARACTER. 
Lepas Balanus. . L. testa conica sulcata, operculis acuminatis. 
Linn. Syst. Nat. Gmel. 1 . p. 3207. 
A conical furrowed shell, with a sharp 
pointed operculum, or lid. 
Petits glands de Mer. Argenv. Conch. 
p. 322. pi. 26. f. D. 2. p. 364. pi. 30. 
f. D. 
Acorn Fish. Dale Harwich, p. 39O. 
Common Barnacle. Penn. Brit. Zool. 4. p. 72. pi. 37. f. 4. Da 
Cost. Brit. Conch, p. 248. pi. ] 7. f. 7. 
A shell so common as the barnacle can hardly 
have escaped the observation of any one, as it is 
frequently seen adhering to the shells of our oysters, 
