JOURNAL OF CONCHOLOGY. 345 



THE MARINE SHELLS OF SCILLY. 



By CLIFFORD BURKILL and J. T. MARSHALL. 



(Read before the Conchologi:al Society, Dec. loth, 1S90). 



Mr. Clifford Burkill spent several months at Scilly during last 

 summer, and added considerably to the species previously re- 

 corded from those islands. 



In the 'Journal of Conchology' for January, 1885, will be 

 found a long and valuable list, by Messrs. Smart and Cooke, of 

 'The Marine Shells of Scilly.' To this we added a supple- 

 mentary list, in January, 1889, of forty-seven additional species 

 and varieties. To this we now add thirty-six more, which will 

 bring up the Scillonian marine record to very respectable 

 proportions, especially considering the rare and interesting 

 character of many of the captures. 



Most of the dredgings were from St. Mary's Sound, the 

 usual 'roll' from the Atlantic preventing any good dredging 

 from that side of the islands in a small boat, added to which 

 there was the usual difficulty with the boatmen, which appears 

 to reach an acute stage in those islands. 



Perhaps the most interesting 'find' of this series is Jiissoa 

 Jeffreysi Waller. It has not occurred on the British coasts since 

 it was found many years ago by Dr. Jeffreys in Shetland — 

 'in sandy ground off Unst, the most northern of the British 

 Isles, at eight to thirty miles from land, in 70-85 fathoms.' 

 It appears to be everywhere rare. Very few specimens were 

 obtained in Scilly, and all are dead, but perfectly fresh. They 

 are much larger and coarser than examples I have from Vadso, 



