344 MOLLUSCA. 



Avater mark at Magilligan, where it is collected by the people for food. 

 ])redged plentiful]}-, but of small size, on pure sand, at a few fathoms' 

 depth off Newcastle, Co. Down, Mr. Hyndman and W. T. 



In lake of brackish water in largest South Isles of Arran, Dr. R. Ball 

 and W. T., 1834. 



D. clenticulatiis, Linn. 

 " One very small valve in sand from Portmarnock," Brown. " Western 

 coasts, very rare," Turt. Catal. Irish Shells only. A specimen said to be 

 from Magilligan is in Mr. Hyndman's collection, 



D. cornplanatus, Mont. 



(W. T., Ann. Nat. H., vol. v. p. 13.) Bantry Bay, Mr. Humphreys, &c. 

 Dead specimens ckedged near South Isles of Ai-ran, Mr. Barlee. 



Genus Ervilia. 



E. castanea, Mont. 



Procured with the valves united on the coast of Galway, by Mr. Barlee, 

 in 1848. All previous specimens obtained on the British coast (off Corn- 

 wall and the Scilly Islands) were but single valves, according to the work 

 particularly referred to for this species. 



Geyius Tellina. 

 T.fahula, Don. 

 Dublin coast, Br. Turt. Not uncommon on extensive sandy beaches, 

 as Portmarnock and Magilligan, W. T. Found from below low-watermark 

 to a few fathoms, on sand. 



Specimens found in the stomachs of plaice {Platessa vulgaris), caught on 

 the Dublin coast, have been given to me by Dr. Farran. Ai'dmore, Mrs. 

 Mackesy. 



T. tenuis, Don. 



Dublin coast, Br. Turt. A common gregarious species found commonly 

 about low-water mark in sand, and like T. fahula to a few fathoms' depth. 

 The plaice in Belfast Bav feed very much on T. tenuis. 



Dundalk Bay, Mr. Hyndman. ' Dredged in Clifden Bay, 1840. On 

 some parts of the Galway coast, said by Dr. Farran to be eaten by the 

 people. 



T. squalida, Pultn. 



Dublin coast, Br. Turt. Found sparingly on sandy coasts. 

 Red Bay, Co. Antrim, Mrs. J. Thomson Tennant, and Dundalk, Mr. 

 Hyndman, may be named as additional localities. 



T. Dunacina, Linn, 



Bantry Bay, Dublin coast (one valve), and Bray (Mr. M. J. O'Kelly), 

 were noticed by Brown and Turton as localities for this species. The 

 first-named locality is its chief one known to me in Ireland ; at Portmar- 

 nock it is but occasionally found. Specimens have but rarely been 

 dredged by us in Strangford Lough (Mr. Hyndman and W. T). And I 

 once met with it in the stomach of a haddock, taken on the open coast of 

 Down. Birterbuy Bay, Dr. Farran, Mr. Barlee. From Co. Clare, in 

 Mr. Warren's collection. 



Ardmore, Mrs. Mackesy. Bantry and Dalkey, R. Ball. 



