76 CATALOGUE OF THE M0LLU8CA 



Anomia ci/lindrica, Turt. Brit. Biv. 232. 

 On the stems of sea-weeds, not uncommon. 



77. OSTREA, Linnwus. 

 1. 0. EDULis, Linn (common oyster). 



Ostrea ednlis, Mont. Test. Brit. 151. 



Not common. Frequently found on the shells of crabs. The 

 only oyster-bed on the coast is at Holy Island. 



The following remarks on this oyster-bed are from our friend 

 Dr. Johnston's " Catalogue of the Bivalved Shells of Berwickshire 

 and North Durham" : — 



" In the inventory of the Priory of Holy Island for 1381-2, 

 we find expended for ' a sloop (navicula), bought of a certain 

 Scotchman (de quodam Slcoto), with the oysters and other 

 goods contained in it, 100s.' From the nature of the purchases, 

 Mr. Raine thinks it may be inferred ' that there were at that 

 period no oysters to be procured at home' ; and suggests that 

 the oysters of this very cargo were the founders of the present 

 valuable colony. — {Hist. N. Durham, p. 110.) The conjeeture 

 is, I believe, unfounded ; for not many years since, the oysters 

 being exposed by the unusually great recess of a spring tide 

 during the night to a severe frost, were all killed, and the bed 

 had to be renewed from Preston Pans ; and if my information is 

 correct, a similar accident has occurred more than once during 

 the last half century." — Johns, in Berw. Club. Proc. i. 80. 



Family. Pectinid^, Broderip. 

 78. PECTEN, Muller. 



1. P. MAXiMUS, Linn. 



Pecten 7naximus, Mont. Test. Brit. 143. 

 In deepish water, rather rare. Cullercoats. Hartlepool. Fre- 

 quent in the north of Northumberland. — 3Ir. R. Embleton. 



2. P. oPERCULARis, Linn. 



Pecten opercularis, Mont. Test. Brit. 145. 

 In shallowish water, frequent. 



The depth at which this species lives appear to vary consider- 

 ably, as we have a white variety presented to us by Mr. Richard 



