MILNE : ON IRISH MOLLUSCA. 1 69 



Planorbis complanatus. — ^Armagh, Armagh (200 ft. alt, 

 lime), plentiful in quarry-cutting. 



P. carinatus. — Ardgonnell, Armagh (200 ft. alt., lime and 

 peat), a few young ones in Ulster Canal. Drummaconor, 

 Monaghan (250 ft. alt., lime and peat), dead specimens in 

 refuse from Ulster Canal. 



P. vortex. — -Curragh, Fermanagh (200 ft. alt., peat), a few in 

 a brook. Rosscole Point, Fermanngh (150 ft. alt., peat), 

 dead shells from Lough Erne. 



Ancylus fluviatilis. — -Rossclare Bay, Fermanagh (150 ft. alt., 

 peat), several in Lough Erne. 



Succinea putns. — Newtownbutler, Fermanagh (200 ft. alt., 

 carboniferous limestone), a few by stream, Drumcru Bridge. 

 Crom Castle, Fermanagh (180 ft. alt., carboniferous lime- 

 stone with alluvium), plentiful in heaps of quarried limestone 

 by Upper Lough Erne. Dromod, Leitrim (150 ft. alt., 

 carboniferous limestone with peat), a few in a damp 

 hayfield. 



S. elegans. — ^Rossclare Bay, Fermanagh (150 ft. alt, old red 

 sandstone), in great numbers under stones on shore of 

 Lough Erne. 



S. elegans van minor. — Carson's Bridge, Monaghan (230 ft 

 alt., carboniferous limestone), several among flags by Ulster 

 Canal. 



Zonites cellarius. — Armagh, Armagh (200 ft alt, carboni- 

 ferous limestone), plentiful in a quarry, Rossmore Castle, 

 Monaghan (300 ft alt, carboniferous limestone), plentiful in 

 dead leaves and on mossy walls in the demesne. Carson's 

 Bridge Monaghan (230 ft. alt., carboniferous limestone), a 

 few in heaps of stone by Ulster Canal. Newtownbutler, 

 Fermanagh (200 ft. alt, carboniferous limestone), one or 

 two at Drumcru Bridge. Castlecaldwell, Fermanagh (180 

 ft alt., carboniferous limestone), several in Muckross Wood. 



Z. alliarius. — Rossharbour, Fermanagh (170 ft. alt., carboni- 

 ferous limestone), young specimens in ruins of a cabin. 



