Hinges ofBriti/h Bivalve Shells. 1 67 



venuco/a. Linn. Sy/l. Nat. ed. Gmel. i. /. 3269. Penn. Br. Zool. 



n. 48. /. 54. / 48. Da Cojl. Conch, p. 185. /. 12. 

 /. I.I. Lijl. Conch, t. 284./! 1 22. Gault, Teji. t. 75. 

 f. H, Borlafe Cornw. p. 278. /. 28,/! 32. 



Tab. XVII. Fig. 5, 6. 

 This hinge is fet with two ftrong eredt teeth, near 

 the beak, in each valve, befides another which runs 

 in the direftion of the cartilage. 



Gallina. Linn. Syjl. Nat. ed. Gmel. i. p. 3270. Da Coji. Br. Conch, 



p. 191. /. 12. / 2. 2. Lift. Conch, t. 282. / 120, 

 *' '^95' /■ 131- Knorr. vergn, 5. /. 14./ 2—5. Chemii, 

 Conch. 6. /. 30,/; 308, 3.10, 



Tab. XVII. Fig. 7, 8. 

 One valve is furniflied with three teeth, the middle 

 one thick and triangular, broad at the bafe, and the- 

 upper angle feated direftly under the beak of the 

 Ihell. Of the two other teeth, one is plate-like, 

 and runs in the dire6lion of the cordiform depref- 

 fion, whilft the other, much thicker, pafles from the 

 beak towards the cartilage. The other valve differs 

 in having a middle tooth lefs triangular, and fitu- 

 ated obliquely. In the room of the plate-hke 

 tooth there is one much more fubftantial. 



e.\-oleta. Linn. Syft. Nat. ed. Gmel. i. p. 3284. Penn. Br. ZooL 



No:4g. t. 54./ 49.^. /. 56./ 49. Da CoJl.Br. Conch. 

 p. 187. /. 12./ t^.^. Lift. Conch. /. 292./ 128. Gault.. 

 TeJl. t. 'js.f. F. Chrnn. Conch, t. 38./ 402. 404. 



Tab,. 



