Stelfox — List of Land and Freshwater Mollusks nf Ireland. 87 



■^vith on ths west const ; and I have little 

 doubt that several other continental 

 " species " are included in our E. itala. 

 Specimens from the Aran Islands 

 (Clare) have been described by Dr. 

 Westerlund as Helix lampra. I do not, 

 however, think their characters are 

 sufficiently marked to deserve specific 

 distinction. 



Helicella intersecta (Poiret). 



Helix caperata, Thompson, Cat. L. and 

 F. W. Moll, of Ireland, p. 15, 1840. 

 H. intersecta, ScharfE, Irish Nat., p. 

 107, 1892. 



WD ^^ LD AN 



FE TY AR DO 



WMSL LE MO 



EM RO CA LH 

 WG NG LF WH ME 

 SG KG KD DU 

 GL NT QG GW Wl 

 NK LK ST KK WX 

 SK MG EC WA 

 WC 



The distribution of this xerophHe is 

 very similar to that of Helicella- itala ; 

 yet it is a rarer and more local shell, 

 and seldom occurs in the enormous 

 quantities of tlie other members of the 

 genus. It is absent from the greater 

 part of Ulster, being found only very 

 locally on the coasts of Antrim, Derry, 

 and Donegal ; but it reappears on the 

 limestone area in the south of Armagh. 

 Specimens from the west and nortli- 

 west are generally extremely large, and 

 are identical with specimens in the 

 Westerlund collection, Dublin Museum, 

 from the coast of Portugal. The pre- 



vailing form in the central and eastern 

 counties is more akin to that found on 

 the Chalk downs of the south of 

 England.' In the Dingle Peninsula 

 (South Kerry) I have recently taken 

 both these forms, and what I had 

 formerly regarded as the "eastern" 

 one occurred in four stations, while 

 the large "western" form was only 

 taken in one locality. 



Helicella barbara (Linne). 



Helix bifasciata, Brown, Mem. Werner 

 Soc, vol. ii., p. 529, 1818. Bwlimus 

 acutus, Thompson, Cat. L. &: F. W. 

 MoU. of Ireland, p. 22, 1840. Helix 

 acuta, Scharff, Irish Nat., p. 108, 

 1892. 



WD ED LD AN 



FE TY AR DO 

 WMSL LE MO 



EM RO cv LH 

 WG NG LF WH ME 

 SG KG KD DU 

 GL NT QG GW Wl 

 NK LK ST KK WX 

 SK MG EG WA 

 WG 



Like Helicella itala, this shell has an 

 extremely wide distribution on coastal 

 sand-dunes and over the central plain, 

 though sometimes absent from large 

 areas of both. It is a remarkable fact 

 that this essentially maritime species is 

 found right in the heart of Ireland, and 

 can be collected in great quantities 

 right across the central plain from 



' Tliia foi'in would appear to be Montagu's 

 HeKx capernta. 



