98 



Proceedings of the Royal Irish Academy. 



form is the prevailing one ; but nowhere 

 in Ireland does this shell reach the size 

 of the largest continental specimens. 



WD ED LD AN 

 FE TY AR DO 

 WMSL LE MO 



EM RO CV LH 

 WG NO LF WH ME 

 SG KG KD DU 

 CL NT QC CW Wl 

 NK LK ST KK WX 

 SK MG EG WA 

 WG 



Pupa muscorum (Linn6). 



Pupa marginala, Thompson, Cat. L. & 

 F. W^ Moll, of Ireland, p. 25, 1840. 



WD ED LD AN 



FE TY AR DO 

 WMSL LE MO 



EM EO CV LH 

 WG NG LF WH ME 



SG KG KD DU 

 GL NT QC GW Wl 

 NK LK ST KK WX 



SK MC EG WA 



wc 



Widely distributed ; but, except on 

 the central limestone plain, it is purely 

 a maritime species, and therefore absent 

 from many inland districts of Ulster. 

 Usually met with along the west coast, 

 but very rare in West Giilway, is seem- 

 ingly absent from West Mayo, and has 

 only been recorded for two of the 

 western islands — Inishmore in the Aran 

 Islands and Inishmacdara off the West 

 Galway coast — in both of which it was 



taken by Mr. Standen in 1896, but has 

 not been seen by recent collectors. The 

 normal form with a denticle is that most 

 commonly met with ; but in Ulster this 

 is very seldom seen, the great majority of 

 shells being quite edentate. Dr. Scharfl 

 reports the var. higranata Eossm. from 

 the Aran Islands and Donegal. 



Yertigo minutissima (Hartmann). 



WD ED LD AN 



FE TY AR DO 

 WMSL LE MO 



EM EO CV LH 

 WGNG LP WHME 

 SG KC KD DU 

 CL NT QC CW Wl 

 NK LK ST KK WX 

 SK MC EC WA 

 WC 



Mr. J. E. Hardy's discovery of this 

 shell at Killarney still remains our 

 only record. He collected it under a 

 log of wood in Muokross demesne. 

 Conchologists who have visited this 

 locality in recent years have failed to 

 find specimens of this species. 



Yertigo antiyertigo (Draparnaud). 



Vertigo palustris, Thompson, Cat. L. & 

 F. W. Moll, of Ireland, p. 26, 1840. 



Generally distributed and usually 

 common in marshy places and around 

 the stony edges of lakes. In the latter 

 habitats it is commonly associated with 

 Zonoioides nitidus, Agriolimax laevis, 

 other Vertigoes, and Succinea pfeijferi. 

 Particularly abundant in the west, and 



