Stelfox — List of Land and Freshwater Mollusks of Ireland. 91 



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Acanthinula lamellata (Jeffreys). 



Helix lamellata, Thompson, Cat. L. &: 

 F. W. Moll, of Ireland, p. 12, 1840. 



WD ED LD AN 

 FE TY AR DO 

 WMSL LE MO 



EM EO CV LH 

 WC NG LF WH MB 



SG KC KD DU 



GL NT QG GW Wl 

 NK LK ST KK WX 

 SK MG EG WA 



WC 



A typical old-woodlaml species ; and 

 though, very local, it is often extremely 

 abundant. Mr. Phillips writes that in 

 the south it seldom, if ever, occurs 

 except in old Oak--woods or in glens 

 containing Oak. This is not oiu- expe- 

 rience, however, in the north ; and at least 

 a third of the habitats known to me 

 contain at the present time no Oaks ; but 

 its association with Hazel, Beech (where 

 this has been planted), and especially 

 with Holly, has often been remarked on 

 by my friend Mr. Welch. Like Sijgro- 

 miafusca, this shell is neither attracted 

 by, nor shuns, the limestone areas, and 

 in this respect differs from Zonitoides 

 excavatvs, with which species it is 

 frequently associated in the non-calca- 

 reous districts. Its distribution, may be 

 termed " anti-central," as it is only iu 

 the maritime and mountainous districts 

 that it can be looked upon as anything 

 but a rare shell. It is as yet unknown 

 from any of the western islands, with 

 the exception of Clare Island and Achill 

 in "West Mayo. 



Yallonia pulchella (Miiller). 

 (? = V. excentrica Sterki). 



Helix paludosa, Brown, Mem. "Werner. 

 Soc, vol. ii., p. 524, 1818. H. ptil- 

 chella, Thompson, Cat. L. «S; F. "W. 

 Moll, of Ireland, p. 9, 1840. 



WD ED LD AN 

 FE TY AR DO 

 WMSL LE MO 



EM RO GV LH 

 WG NG LF WH ME 

 SG KG KD DU 

 GL NT QG GW Wl 

 NK LK ST KK WX 

 SK MG EG WA 

 WC 



Generally distributed both in the 

 maritime counties and those districts 

 formed of Carboniferous limestone, but 

 seldom met with inland in the non- 

 calcareous areas, and absent from many 

 inland districts in Ulster. 



It is common in most of the western 

 counties and on the islands. 



I am unable to discriminate clearly 

 between Vallonia excentrica and the 

 typical V. pulchella, and have therefore 

 united the two forms. 



Yallonia costata (Miiller). 



Helix pulcJiella-, var. crenella, Thompson, 

 Cat. L. & F. W. Moll, of Ireland, 

 p. 9, 1840. H. pulchella, var. costata, 

 Scharff, Irish Nat., p. 105, 1892. 



This shell has a much more central and 

 eastern range than Vallonia pulchella 

 and, although it occurs on the Dingle 



[iV2] 



