Stelfox^//*/ of Lund and Freshwater 3IoHusks of Ireland. 1 1 3 



so univursal in the type, being scarcely 

 apparent. (Kg. 31.) 



Amphipeplea glutinosa (Miiller). 



WD ED LD AN 

 FE TY AR DO 



WMSL LE MO 



EM RO CV LH 



WG NG LF WH ME 

 SG KG KD DU 



CL NT QC CW WI 



NK LK ST KK WX 

 SK MC EC WA 

 WC 



With the exception of the Lough 

 Neagh basin in the north-east, this 

 shell is strictly confined to the lime- 

 stone plain, where it is sometimes 

 common, and even abundant, in canals, 

 lakes, and 'large drains or sluggish 

 streams. During the summer months 

 it may be frequently overlooked, owing 

 to its habit of remaining in the deeper 

 parts of its habitats ; and it is pro- 

 bably more generally distributed over 

 the central districts than our present 

 knowledge would indicate. 



Planorbis corneus (Linne). 



ITelix cornea, Brown, Mem. Werner. Soc, 

 vol. ii, p. 524, 1818. 



Much the rarest species of the genus 

 in Ireland, and — assuming that tlie 

 Markree habitat in Sligo was stocked by 

 specimens brought with water-plants — 

 is confined to a small part of the country 

 drained by the Rivers Barrow and Liffey, 

 where it was first discovered about 1815 



B.I. A. PROC, vol.. XXIX., SECT. B, 



by Capt. Brown. Hei-o it lives in shallow 

 drains and swampy pools, associated 



WD ED LD AN 



FE TY AR DO 

 WMSL LE MO 



EM EO CV LH 

 WGNG LF WHME 

 SG KC KD DU 

 CL NT QG CW WI 

 NK LK ST KK WX 

 SK MC EC WA 

 WC 



with Planorbis umlilicatus, Limnaea 

 palustris, and L. stagnalis. Its habitats 

 appear to be intermediate between those 

 which completely dry up and those, 

 such as canals, in which the water-level 

 seldom varies. Mr. Kennard refers 

 Kildare specimens to the var. mahiUei, 

 Bourg. 



An old record for Meath seems doubt- 

 ful, and is omitted for the present. 



Planorbis albus Miiller. 



Ilelix alba, Brown, Mem. Werner. Soc, 

 vol. ii, p. 524, 1818. 



WD ^^ 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 WI 

 NK LK ST KK WX 

 SK MC EC WA 

 WC 



Widely and generally distributed, but 



