196 Mr. W. Thompson’s Catalogue of the Land and 
5. Pisidium Henslowianum, Jenyns, Monog. p, 20. pl. 21. f. 6, 7; 
Gray, Man. p. 285. pl. 1. f. 6. 
Cyclas appendiculata, Turt. Man. p. 15. f. 6. 
The addition of this species to our fauna is due to Edw. Waller, 
Esq., who has favoured me with the inspection of a few specimens 
which he procured at Finnoe, county Tipperary. 
6. Pisidium amnicum, Jenyns, Monog. p. 21. pl. 19. f.2; Gray, 
Man. p. 285. pl. 1. f. 5. 
Cyclas amnica, Turt. Man. p. 15. f. 5. 
Cardium amnicum, Mont. p. 86. 
Cyclas palustris, Drap. p. 131. pl. 10. f. 15, 16. 
Although not very common, is widely distributed over the island, 
and is known to me as occurring in every portion except the extreme 
south. Capt. Brown noticed as localities—‘“‘in a stream near Clo- 
nooney; in the Grand Canal, and in the Liffey, plentiful,” p. 508.— 
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 Mr. W. H. Harvey as localities—from the 
river Barrow near Portarlington, the species has been sent me by 
the Rev. B. J. Clarke. 
7. Pisidium cinereum, Alder, Supp. to Catal. in Newc. Trans. ; Gray, 
Man. p. 286. 
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 Portarlington, by the Rev. B. J. Clarke; and in the 
neighbourhood of Dublin by T. W. Warren, Esgq., is the P. cinereum. 
Fam. 2. Unronip2, Gray, Man. 
Gen. 1. Anopon, Oken. 
A. cygneus, Turton, Man. p. 17.f. 8; Gray, Man. p. 289. pl. 1.f. 8. 
Anodonta cygnea and A. anatina, Drap. p. 133, 134. pl. 12. f. 
Ly Ss 
Mytilus cygneus, Mont. p. 170. 
The Anodon is known to me as found in suitable localities all over 
the island, except in the extreme south. The Anodonta intermedia, 
Pfeiffer, 1. 113. t. 6. f.3, I have obtained in the rejectamenta of the 
Lagan Canal near Belfast. Specimens from the Grand Canal near 
Dublin, favoured me by Mr. R. Ball, are the A. cygnea, Pfeiffer, 1. 
111. t. 6. f.4; and Rossmassler, fig. 342; and in Mr. Hyndman’s 
collection is a very fine specimen 34 inches long and 62 broad from 
