LAMELLIBEANCH I AT A. 
341 
Genus Alasmodon. 
A. margaritiferus, Gray. 
This has for a long period been on record as an Irish shell ; from papers 
published on the subject in the Philosophical Transactions, & c., Pennant 
drew the information which appears in his British Zoology. 
It is indigenous to several of the northern counties, and to the South. 
By Capt. Brown it is noticed as found “ in the river Slaney, Enniscor- 
thy,” p. 505. In the cabinet of Mr. Hyndman of Belfast are specimens 
from the river Bann, and from the County of Donegal. This species in- 
habits some of the tributary streams of Lough Neagh, and is plentiful 
in the neighbourhood of Omagh, County Tyrone, where, I have been 
informed, it was taken in such quantity in 1839, that the prisoners in the 
jail were employed in breaking the shells for manure. Mr. Humphreys 
of Cork notes it as abundant at Inchigeela, and as inhabiting the 
small rivers which run through Blarney and Glanmire (Co. Cork) ; at 
Curraghmore (Co. Waterford) it is stated by Dr. It. Ball to be found. 
The form to which M. Michaud has applied the name of TJnio Roissyi 
is common to several localities in Ireland. 
“ Here are rivers which breed pearles,” p. 14. O’Flaherty’s West or 
H’lar Connaught. 
My a margaritifera , river Anamoe, near the Seven Churches, Co. Wick- 
low ; specimens thence given me by Mr. Warren, 1847. 
„ Oct., 1839. Pearls in Lough Eask (Donegal), Mr. Robert Barklie has 
known taken in great quantity. 
Killymoon, Co. Tyrone. 
Pearl Mussels found in the river commonly, and are sought for on ac- 
count of the pearls by the people of Coagh. Mr. Hyndman, Oct., 1851. 
Alasmodon margaritiferus, Nov., 1851. F. Davis brought me one 
from the river Bush, Co. Antrim, where he saw a number last autumn. 
Family Camacadje. 
Genus Isocabdia. 
I. cor, Linn. 
Found in Dublin Bay by Mr. James Tardy, and at Cork by Mr. Samuel 
Wright, Brown. The following note appears in Mr. Templeton’s MS. 
journal, under October 28th, 1811 : “Received a drawing of the Cliama 
Cor, from Mr. George Joy, taken by him from a specimen dredged up 
at Bangor (Belfast Bay).” The species is known by Mr. J. R. Clealand to 
have been dredged near the Copeland Islands, at the entrance of this bay. 
The Giant’s Causeway and Bantry Bay are named by Turton (C. D. and 
Brit. Biv.) as localities in which it has been found; but very rarely. 
Berehaven, County Cork, Mr. John D. Humphreys. Dr. R. Ball some 
years ago obtained a number of this species from Dublin Bay, where it 
had previously, as well as elsewhere on the coast, been met with very 
rarely : of late years, however, it has proved to be by no means rare in 
that quarter. It is taken on the Kish Bank. 
Glassdrummond, County Down, P. Doran. 
