LAMELLIBRANCHIATA. 355 



M. arenaria, Linn. 



Plentiful in localities on every side the coast. Frequently buried in 

 the soft sand of Belfast Bay, between tide-marks. Dug out and eaten by 

 some of the poorer people here, as it is on various parts of the coast. 



Ballyshannon, Co. Donegal ; Sligo coast, Killery Bay, W. T., &c. 



Genus Lyonsia. 

 L. Norvegica, Chem. 



Two valves found by Miss Hutchins in Bantry Bay, in Dr. Taylor's 

 collection. Brown. 



A very rare species, though widely distributed. Dredged in Belfast 

 and Strangford Loughs, in from 6 to 1 2 fathoms, among sea-weed. 



Dublin coast, Dr. Ball, &c. Birterbuy Bay, Dr. Farran, Mr. Barlee. 

 A single valve, Cork, Mr. Humphreys. Dredged in or near Bantry Bay, 

 Mr. M'Andrew. 



Genus Lutraria. 

 L. vulgaris, Flem. 



Like Mya arenaria, plentiful in localities on all sides the coast ; and 

 in those of a nature similar to those where that species occurs. Used as 

 edging to garden plots by the cottagers at Bundoran, where it is abundant, 

 Mrs. Hancock. 



L. hians, Flem. 



About Cove, rare, Turt. Catal. Magilligan, Mr. Hyndman. Bantry 

 Bay, Mr. Humphreys. Found in a recent deposit of blue clay excavated 

 for a dock at Belfast, Dr. Wm. M'Gee. 1847, I saw specimens from 

 Dublin Bay in Mr. Warren's collection. 



L. compressa, Lam. 



Dublin coast, Br. This should not perhaps have been noted in the 

 Belfast Bay column, as, though not uncommon in a dead state, it has not 

 been found alive to my knowledge.* Dundalk and Clontarf (Dublin 

 Bay), recently dead, and in situ between high and low water mark, Mr. 

 Hyndman. Youghal, Dr. Ball. Mud-banks, Cork Harbour, common, 

 Mr. Humphreys. 



Gemis Psammobia. 

 P. Tellinella, Lam. 



Ireland, Turt. Rather rare, except perhaps at Bantry Bay, whence 

 specimens have been supplied me by Dr. Ball. Dredged very rarely in 

 Belfast and Strangford Loughs, from about 10 fathoms, sandy ground. 

 Dublin coast, Mr. Hyndman and W. T. Mr. WaiTen, in a letter dated 

 February 3rd, 1847, remarked, "A few days ago I found at Portmarnock 

 147 good living specimens of Psam. Jlorida, though I had seldom obtained 

 more than a single specimen there at one time before." Birterbuy Bay, 

 Dr. Farran, Mr. Barlee. The latter gentleman dredged near the South 

 Isles of Arran the var. with about ^ of each valve striated. 



P. Ferroetisis, Chemn. 



Dublin coast, Br. Turt. Commonly thrown ashore on most sandy 



* Possibly it may only have to be dug for to be so obtained. It is found on 

 the muddy banks of the river Lagan, nearly as far up as the tide flows. 



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