28 Mr. W. Thompson's Catalogue of the Land and 



which in H. hispida, at least as I find it in the North of Ireland, is 

 more often wanting than present. It commonly in Ireland takes the 

 place of H. rufescens, Mont, where this is not found, as it has been 

 remarked by Mr. Alder to do in England. In the northern half of 

 the island it prevails abundantly ; and as the H. rufescens decreases 

 northwards, so does the H. concinna southwards ; from extreme east 

 to west they both range : in the central parts of the country, where 

 both occur, they retain their distinctive characters, the H. concinna 

 being smaller, more convex, and darker in colour than its ally. 



Specimens of H. concinna from the neighbourhood of Bristol, 

 favoured me by Mr. Jeffreys, are, as he now considers, certainly no- 

 thing more than H. hispida, and in its ordinary depressed form ; still 

 the typical specimens of these two Helices are very distinct in ap- 

 pearance, but through their varieties would almost seem to unite. 



" Helix circinata, Fer." 



I cannot perceive any difference between some of my North of 

 Ireland specimens of H. concinna, when completely denuded of their 

 hairs, and a shell so named, which I owe to the kindness of Mr. Alder. 



15. Helix rufescens, " Penn." Mont. p. 420. t. 23. f. 2 ; Gray, p. 



156. pi. 3. f. 28. 

 H. glabella, Drap. p. 102. pi. 7. f. 6. 



This species is common to the southern two-thirds of the island : 

 as far north as Banbridge in the county of Down it has been found. 



16. Helix Pisana, Mull. Gray, Man. p. 158. pi. 4. f. 30. 

 H. cingenda, Mont. p. 418. t. 24. f.4. 



H. rhodostoma, Drap. p. 86. pi. 5. f. 13 — 15. 



This fine and local species was first noticed as Irish in Turton's 

 Catalogue (p. 8.), from specimens collected at " Balbriggan Strand," 

 or as more correctly given by their discoverer M. J. O'Kelly, Esq. 

 in the edition of Pennant's British Zoology, published in Dublin in 

 1818, "near Balbriggan, on the county Meath side of the stream 

 that divides this county from Dublin," vol. iv. p. 369. By Mr. 

 O'Kelly and Mr. T. W. Warren I have been favoured with speci- 

 mens of H. Pisana from this locality. My friend R. Callwell, Esq. 

 of Dublin, informs me that this species has been found at another, 

 though not far distant station, by Mr. Joseph Humphreys, on the 

 north side of the river Boyne, three miles east of Drogheda, and ten 

 north of Balbriggan. 



17. Helix virgata, Mont. p. 415. t. 24. f. 1 ; Gray, Man. p. 160. 



pi. 4. f. 31. 

 H. variabilis, Drap. p. 84. pi. 5. f. 11. 12. 



In the north, east and south this species is found, but in the west 

 I am not aware of its presence. It is a local species, occurs on the 

 marine sand-hills at Ballycastle, in the north of the county Antrim ; 

 Dundalk (county Louth) ; Dublin, Wicklow, Youghal, and Cork ; 



