TttE 
DENTICULATED OYSTER, 
^ ^ ^ ^ ^ 
GENERIC CHARACTER. 
Animal resembling a Tethys. 
Shell bivalve, subauriculated. 
Hinge generally toothless, with an ovate or sub- 
trigonal fossule, and lateral transverse 
streaks. 
SPECIFIC CHARACTER, ^c, 
OYSTER with foliaceous, rounded shell; one 
valve flat and parasitic, with the hinge den¬ 
ticulated on each side. 
Born. Test. Mus. Cees. Vindob. t. 0. f. 9j 10. 
The denticulated Oyster is found adhering to rocks 
. about the Cape of Good Hope, and is sometimes 
larger than the specimen represented on the annexed 
plate. 
