S'J'ELFOx — List of Land and freshwater Molltisks of Ireland. 99 



recorded from most of the islands. It 

 varies greatly in size, in the number of 



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 QC GW Wl 

 NK LK ST KK WX 

 SK MG EG WA 

 WG 



denticles, and in shape, some specimens 

 being very short and stumpy. The 

 most remarkable specimen I have seen 

 is one which I took under stones on the 

 edge of Glenade Lough in Leitrim ; it is 

 remarkably elongated, and wants the 

 characteristic swollen body- whorl cif 

 this species; it is, moreover, of a rich 

 claret colour, and in outline resembles 

 slightly Vertigo KUjehorgi, with which 

 shell it was associated. 



Vertigo substriata (Jeffreys). 



WD ED LD AN 



FE TY AR DO 

 WMSL LE MO 



EM EO CV LH 

 WGNG LF WHME 

 SG KG KD DU 

 GL NT QG GW Wl 

 NK LK ST KK WX 

 SK MG EG WA 

 WG 



Generally distributed on most parts 

 of the mainland, and frequently met 



with on the islands. It is common in 

 all wooded areas, and generally found in 

 marshy places, the edge of lakes or 

 damp cliffs. Variation in size of the 

 shell is often considerable, the marsh 

 form being seemingly the largest. 



Yertigo pygmaea (Drapamaud). 



WD ED LD AN 

 FE TY AR DO 

 WMSL LE MO 



EM RO GV LH 

 WGNG LF WHME 

 SG KG KD DU 

 GL NT QG GW Wl 

 NK LK ST KK WX 

 SK MG EG WA 

 WC 



Shares with Vertigo antivertigo the 

 distinction of being the commonest 

 species of the genus, and is almost 

 universally distributed over the main- 

 land and on the islands. It is one of 

 our most variable land-shells : three 

 well-marked forms occur, vi%. : — 



(a) A. small stumpy form, resembling 

 somewhat in contour Vertigo suhstriata ; 

 has always five denticles, and is paler 

 in colour than the other two forms 

 described below. Common in woods. 



(i) The vei'y large robust form met 

 with in marshy places, of a dark horn- 

 colour, and although often possessing a 

 fifth denticle it is usual to find only 

 four — one on the body-whorl, one on 

 the columella, and two on the outer 

 margin of the aperture. In shape it 

 slightly resembles Vertigo alpestris, the 

 last whorl being contracted, which gives 

 the whole shell a slender appearance. 



[0 2] 



