Freshwater Mollusca of Lreland. 17 
Canal ; at Lough Derg and Limerick it is found in the Shannon ; and 
in the county of Tipperary in some of the tributaries of this river ; and 
about Cork in the river Lee. The specimens which I possess from 
the Shannon and Grand Canal are identical with the N. fluviatilis 
represented by Rossmassler, and as distinguished from the N. Danu- 
bialis, N. strangulata* and N. transversalis. Icon. part. 2. p.17, 18. 
pl. 7. 
Fam. 2. Paruprnips. 
Patupina, Lam. 
1. P. vivipara, Lam. Gray, Man. p. 90. pl. 10. f. 118. 
Cyclostoma viviparum, Drap. p. 34. pl. 1. f. 16, 17. 
Helix vivipara, Mont. p. 386. 
In his ‘ Irish Testacea,’ p. 527, Capt. Brown notices this species 
under the last-quoted name as found ‘‘ in a stream near Newtown- 
ards, county of Down; rare’’-—by a letter from this author I learn 
that he himself procured the shell in that locality. Mr. Gray (Man. 
p. 34.) incidentally notices Paludina achatina as an Irish species, but 
on inquiry from him he could not recollect from whom he had re- 
ceived the information. I have not seen undoubtedly native speci- 
mens either of P. vivipara or P. achatina. 
2. P. tentaculata, Flem. 
Helix tentaculata, Linn., Mont. p. 389. 
Bithinia tentaculata, Gray, Man. p. 93. pl. 10. f. 120. 
P. impura, Lam., Turt. Man.'p. 134. f. 120. 
Cyclostoma impurum, Drap. p. 36. pl. 1. f. 19, 20. 
A common species throughout the island, generally approximating 
Draparnaud’s var. f. 20. pl. 1. more nearly than his normal shell f. 19. 
I have on different occasions found the stomachs of Gillaroo Trout 
from Lough Neagh filled with this Paludina. 
Fam. 3. VALVATAD2. 
Varvara, Muller. 
1. V. piscinalis, Lam. Gray, Man. p. 97. pl. 10. f. 114. 
Cyclostoma obtusum, Drap. p. 33. pl. 1. f. 14. 
Turbo fontinalis, Mont. p. 348. t. 22. f. 4. 
Common, and generally distributed over Ireland. Many of my 
middle-sized specimens correspond with Pfeiffer’s V. depressa, in so 
far as the figure and diagnostic description enable me to judge, Pfeiff. 
part 1. p. 100. t. 4. f. 33. See Gray, Man. p. 98. This species is 
very variable in the degree of elevation of its spire, and consequently 
in its diameter relatively to its height. I have been favoured by 
Edward Waller, Esq. with specimens of this Valvata collected at 
Finnoe, county Tipperary, the volutions of which appear angular 
from being spirally cut, as they occasionally are in various species of 
Limneus, and the angles are marked with a white line. 
_* Specimens from Carniola, named “ N. strangulata, Menke,” by M. Mi- 
chaud, who favoured me with them, when compared with my N. fluviatilis, 
fully bear this out. 
Ann. & Mag. Nat. Hist. Sept. 1840. c 
