XXX1 
Parasitica, 120 (O. De- TEREBRATULA. 
pressa Philippi, t. 6, | Cramum, 126. 
Fi ose 108. Psittacea, 127. 
ANOMIA. Aurita, 127. 
Electrica, 120. CHITON. 
Ephippium, 121. Fascicularis, 128. 
Cepa, 121. | Crinitus, 251. 
Squamula, 122. Marginatus, 128. 
Undulata, 122. 
Punctata, 122. 
Cylindrica, 123. 
Striolata, 123. 
Aculeata, 123, f, 73. 
Cinereus, 128. 
Albus, 129. 
Levis, 129, f. 29. 
Ruber, 129. 
Levigatus, 129. 
Hanleyt, 263, f. 57. 
Tubularis, 124. Pictus, 264, f. 56. 
Coronata, 124. PATELLA. 
DISCINA. Vulgata, 130. 
Fornicata, 124. 
Ostreoides, 125. Athletica, 264, f. 108. 
CRANIA. ACMAEA. Escuotrrtz. 
Rostrata, 125. (Patella Pectinata, 139). 
ae 
British writers as found on our shores, appears to be 
nothing more than that variety of the common oyster, of 
which the sides are expanded and the inner margin den- 
ticulated near the umbo. 
