Freshwater Mollusca of Ireland. 



115 



as its name denotes, is an inhabitant of the marsh : it nevertheless 

 seems invariably to be not only free from dirt, but presents a high 

 polish. By the Rev. B. J. Clarke the V. palustris has been obtained 

 near Portarlington, and by Mr. Edw. Waller at Finnoe, Tipperary. 

 In England I have procured it near Twizel, Northumberland, and 

 in Scotland in several localities around Ballantrae. Mr. Gray, in the 

 Introduction to his edition of Turton's Manual, mentions the V. pa- 

 lustris and V. angustior to "have been only yet recorded as found 

 near London and in the west of England," p. 37 — in 1834 I pub- 

 lished both species as indigenous to Ireland. Phil. Mag. 1834, p. 300. 

 Reference to this communication, though a mere list of species of 

 land and freshwater Mollusca previously unrecorded as Irish, would 

 have shown that several species noticed in the Manual as local, have 

 a considerable range of distribution. 



5. Vertigo pusilla, " Mull." Jeffreys, Linn. Trans, vol. xvi. p. 361. 



Gray, Man. p. 205. pi. 7. f. 86. 



V. heterostropha, Leach. Turt. Man. p. 105. f. 86. 



Pupa Vertigo, Drap. p. 61. pi. 3. f. 34, 35. 

 Is very rare, but has been found in the north-east and west of the 

 island. From under a stone on a dry bank in Colin Glen, near Bel- 

 fast, I obtained a specimen in 1832, as Mr. Hyndman did in an ad- 

 jacent glen some time afterwards ; in shell-sand from Portmarnock 

 I have detected it, and Mr. Harvey has supplied me with a speci- 

 men from Mil town Malbay, where he states the species is very rare. 

 A shell from Flanders, favoured me by M. Michaud, under the name 

 of "Pupa Vertigo, Drap. {Vert, pusilla, Mich.)," is identical with 

 that under consideration. 



6. Vertigo angustior, Jeffreys. Linn. Trans, vol. xvi. p. 361 ; Gray, 



Man. p. 205. 

 Turbo Vertigo, Mont. p. 363. t. 12. f. 6. 

 In 1833 I was favoured by Mr. W. H. Harvey with specimens of 

 Vertigo labelled " V. heterostropha, two species, from the sand-hills 

 Miltown Malbay, the smaller common, the larger very rare." The 

 smaller are of this species, which has always seemed to me distinct 

 from the V. heterostropha of Drap. and of Turton's Manual. A com- 

 parison of Montagu's Turbo Vertigo (tab. 12. f. 6.) with the V. he- 

 terostropha in the works just mentioned, will show the obvious dif- 

 ference. To Mr. Jeffreys the merit is due of clearly distinguishing 

 these species. Since 1834, when this Vertigo was published as in- 

 digenous to Ireland, I have not obtained any more information re- 

 specting it. 



10. Balnea, Gray. 

 1. B. perversa, Flem. Gray, Man. p. 207. pi. 6. f. 70. 

 B. fragilis, Gray. Turt. Man. p. 87. f. 70. 

 Pupa fragilis, Drap. p. 68. pi. 4. f. 4. 

 Turbo perversus, Mont. p. 355. t. 11. f. 12. 

 This species is generally distributed over the island. Its favourite 



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