NORTH BRITISH TESTACEA. 



379 



Tellina. 

 7. solidula. 

 carnaria 



:} 



8. proficua. 



9. carnaria. 



10. striata. 



11. crassa. 

 rigida 



12. radula. 



1 3. flexuosa. 

 3 Venus sinuosa 



14. polygona. 



15. Laskeyi. 



M. 

 P. 



M. 

 D.M. 



M. 

 M. 

 D. 

 M. 



M. 



7 M 

 5 D 



M. 



M. 



16. similis. 



Sowerby, 

 M. 



Dunbar and other parts of 

 the coast, with all the va- 

 rieties of colour. 



Dunbar, rather scarce. 



Dunbar, very rare. One 

 small specimen only oc- 

 curred. 



Dunbar, very rare. 



Aberlady Bay, not uncom- 

 mon. 



Aberlady Bay, not uncom- 

 mon ; and Leith Roads. 



Portobello Sands, rather 

 scarce. 



New shell, taken by the 

 dredge ofFCramond Island, 

 Frith of Forth, rare. 



New shell, Musselburgh 

 Sands, and Aberlady Bay, 

 very rare. 



Very rare, discovered, with 

 Tellina fabula, on Belton 

 Sands, near Dunbar. 



CARDIUM. 



Animal a Tethys. Shell bivalve, nearly equila- 

 teral, equivalve ; generally convex, longitudi- 

 nally ribbed, striated or grooved, with a tooth- 

 ed margin. Hinge with two teeth, alternate, 

 in the middle, near the beak ; in most incurved : 



