114 TEANSACT10NS LIVEEPOOL BIOLOGICAL SOCIETY. 



G.— Collection of Edible Shell-fish. 

 G. I. Cockles {Gardium edule). 



a. Marketable Cockles of our district. 



1. Sample from Hilbre. 



2. ,, Hoyle Bank. 



3. ,, Crosby. 



4. ,, Southport. 



5. „ St. Amies. 



6. ,, Fleetwood. 



7. ,, Cockerham Sands. 



8. „ Morecambe. 



9. ,, Grange over Sands. 



10. „ Flookburgh Sands. 



11. „ Baicliff. 



12. „ Duddon. 



b. Series of young cockles from J-th to 1 inch in 



length. 



c. Pair of cockles showing over and just under 



marketable size, 2 inches by f inch. 



d. Brown cockles from Duddon cockle beds. The 



colour is due to an oxide of iron. 



e. Cockles with tuft of Alga attached to the posterior 



margin of the shell, which lies uppermost in 

 the sand. 

 /. Large cockles from the Barra Beds, Scotland. 



G. II. Mussels (Mytilus ediclis). 



a. Marketable Mussels of our district. 



1. Sample 



from Hilbre. 



2. 



Hoyle Bank. 



3. 



Wallasey. 



4. 



Southport. 



5. ,, 



St. Annes. 



