39 



3. undulata. 



Anomia undulata, Turt» — Ostraea striata, 

 Mont, 

 On shells ; common in deep water. 



4. cylindrica. 



Anomia cylindrica, Turt. — A. cymbiformis. 

 Mat. and Rac. 

 On fuci, but not frequent. 



LVTI. Ostraea, Lin. 

 1. edulis, Lin. 



Test. jun. Ostrava parasitica, Turt. 

 On the north and east coasts plentiful. The 

 oysters on the north coast are extremely large and 

 very coarse, but those on the east coast are esteemed 

 and brought to market. The bank is situated off the 

 village of Laxey. 



Fam. Pectinidae. 



LVIII. Pecten, Brugiere, 



1. maximus. 



Pecten maximus, Peiin. — Ostraea maxima, 

 Lin. 

 Frequent on the scallop banks, and as well as the 

 next species, used as food when cooked. 



2. opercularis. 



Pecten opercularis, Mont. — Pecten subrufus, 

 Penn. — Ostrjea opercularis, Lin. 

 Frequent, being the chief inhabitant of the scallop 

 banks. 



3. varius. 



