NORTH BRITISH TESTACEA. 



387 



Pectew. 

 1* maximus. 



% opercularis. 

 subrufus 



3. pusio. 



4. obsoletus. 



5. glaber. 



6. similis *. 



P. D. M. Leith Roads, rather scarce, 

 1 he oyster dredgers as- 

 sert, that this species is 

 not indigenous in the 

 Frith, bir that some years 

 since they were brought 

 from some other parts, a d 

 deposited in the Roa s; 

 but that they are all dead. 

 I have met als>o with 

 dead valves in Aberlady 

 Bay. 



M. Portobe.lo, Leith Roads and 

 P. D. various other parts of the 

 coast. 



P. M. D. Dunbar and other parts, not 

 common, 



P. D. M. Dunbar, not uncommon. A 

 single dead valve occurred 

 in Aberlady Bay of a very 

 large size, being above 

 one inch in diameter. 

 P. M. Dunbar, very rare. 



Laskey. At first I had doubts respec- 

 ting this being the Pecten 

 lt^vis of Men agu ; but 

 having since received a 

 specimen from Mr Mon= 



* Tab. viii. fig. 8. 



B b 1 



