Hinges of BntlJ}) Bivalve Shells. i6i 



Tab. XV. Fig. 1-^4. 



One valve of the T, planata contains three teeth ; two 

 near the beak, and one rather remote. 



The other valve has only two, and the largefl is 

 divided longitudinally. 



incarnata* Linn, Syjl, Nat. ed. Gmel. i. ^.5234. Penn. Br, Zoo/, 

 No. 32. /. 49. /. 32. 32. Liji, Conch, t. 405. f. 250. 

 — An. Ang. i. J^. f. 25. Da Ccji. Br. Conch, p. 21 1. 

 /. 1 2. /. 4. 4- 4- Gault. Tejl. t. 88. /. M. 



Tab. XV. Fig. 5-8. 



This ftell has two teeth clofe to the beak in each valve, 

 one of which is fulcated. There are no remote 

 teeth. 



Mr. Pennant has called this flicll cartiaria. I believe 

 his Tl incarnata to be the T. radiata of Linnseus. 



cornea. 



Vol. VI. 



hinn, Syjl. Nat. ed. Gmel. i. p. 3242, Penn. Br. Zool. 



No. 36. /. 49./^ 35. Da Cojl. Br. Conch, p. ly^t- 



i. 13. fg. 2. 2. Lijl. Conch. /. 159. f. 14. — An. Ang. 



t. 2. f. 31. App. 12. i. T. /. 5. Gault. Tejl. t. 7. 



f. B. C. Chemn, Conch, 6. /. 13. y^ 133. a. b. 



Tab. XV. Fig. 9 — 12. 

 In the jT. cornea we find four tt^&i in each valve. The 

 two remotely fituated are of a confiderablc fize ; but 

 thofe placed more immediately under the beak are 

 fo minute, that they are hardly to be diftinguilhed 

 without a magnifying glafs, even in the large Thames 

 fpecimens. 



Y If 



