NORTH BRITISH TESTACEA. 



4** 



Patella. 



5. intorta. 



6. antiquata. 



7. militaris. 



8. f is sura. 



9. Ungarica. ") 

 Hungarica. 5 



10. chinensis. 1 

 albida. J 



11. fluviatilis. 

 lacustris 



P. D. M. I have been so fortunate,, 

 since the first discovery of 

 this rare shell, to dredge 

 two specimens in the Frith 

 of Forth, one of which is 

 now in the collection of 

 North British Testacea in 

 possession of the Werne- 

 rian Society. 

 One specimen only has oc- 

 curred, by deep dredging, 

 Frith of Forth. 

 Same as above. 

 P. D. M. Not uncommon on the shore 

 near Dunbar. 

 Dunbar sparingly, but small. 

 Many specimens of a fine 

 pink colour. 

 A solitary small specimen 

 has been found near Dun- 

 bar. 



In a lake near Dunbar, This 

 shell has been confounded 

 with the lacustris of Mon- 

 tagu, and the oblonga of 

 Lightfoot, as described by 

 him in the Philosophical 

 Transactions. I have ne- 

 ver met with Patella ob- 

 longa in North Britain. 



M. 



M. D. 

 P. 



M. 

 D. 



M. 

 P. D. 



