LAMELLIBRANCHIATA. 351 



Capt. Brown noticed as localities — " in a stream near Clonooney ; in the 

 Grand Canal, and in the Liffey, plentiful," p. oOS ; in this river it attains 

 a very large size. In the river Main, near its junction with Lough 

 Neagh ; in the rejectamenta of this lake near Toome, and in that of the 

 river Lagan, near Belfast, I have found the P. amnicum. Ballitore 

 (County Kildare), Limerick, and Miltown Malbay, are noticed by Pro- 

 fessor Harvey as localities. From the river BaiTow, near Portarling- 

 ton, the species has been sent me by the Rev. B. J. Clarke. 



Pisidium cinereum, Alder, 



Is not common, but is widely distributed in Ireland, being found in the 

 North, East, West, and South. In Sept., 1833, I first met with it in a 

 moist spot in the wood at Holywood House, County Down, and have since 

 obtained a very few specimens in different parts of this County and of 

 Antrim. Among Pisidia collected at Youngrove, near Middleton (County 

 Cork), by Miss M. Ball ; at Killereran (County Galway) and Poilarling- 

 ton, by the Ilev. B. J. Clarke ; and in the neighbourhood of Dublin, by 

 T. W. Warren, Esq., is the P. cinereum. 



Genus Astarte. 

 A. Danmoniensis, Sow. 



Bray and near the Giant's Causeway, Turt. Br. 



Dredged ofl' the Co. Antrim coast ; in Belfast and Strangford Loughs 

 sparingly, from about 8 to 25 fathoms, on mud and sand, Mr. Hyndman 

 and W. T. Appears to be extremely scarce at Youghal and Cork, where 

 it has been met with in the South. Not included in any of my western 

 lists. 



A. Scofica, Flem. 



" Dredged at Bray ; not common," O'Kelly. All the remarks in the 

 last apply equally to this. 



Genus Artemis. 

 A. exolefa, Linn. 



Dublin coast, Br. Turt. Common on most sandy coasts. 

 Dredged from 5 to 10 fathoms on sand in Belfast and Strangford 

 Loughs, Mr. Hyndman and W. T. 



Larne Lough, W. T. ; Ballysodare, Co. Sligo, Mrs. Hancock, 



A. lincta, Pult. 

 Taken as last and in same localities. 



A. iindata, Penn. 

 Dublin coast, Belfast Bay, western coasts, Br. Turt. Not uncommon 

 on most sandy coasts. In addition to the places indicated, obtained in 

 Killery Bay in 1840. 



Genus Cytherea. 



C. omta (Br. Turt.). 



A rather common species. Dredged alive in liclfast and Strangford 

 Loughs, from 10 to 20 fathoms on oozy ground. Lame Lough, Mr. 

 Hyndman and W. T. Dielged in Killery and Clew Bays in 1840. 



