l8 JOURNAL OF CONCHOLOGY, VOL. II, NO. I, JANUARY, I904. 



and West Mayo, and abundant, Mr. J. N. Milne tells me, in . Ray, 

 Kilderry, and Walworth Woods, North- West Donegal. Our president 

 found it recently at an inland station, Tempo Manor, in Co. Fer- 

 managh, all the others being on or fairly near the coast. 



Vertigo liljeborgi and Otina otis are only found on the west coast. 

 The former, as Messrs. Chaster and Tomlin have pointed out recently 

 in the Irish Naturalist^ is moderately plentiful near Roundstone, S.W. 

 Galway, but requires careful searching for. Otina has now been 

 recorded for four stations, from Miltown-Malbay in Clare, to Rosa- 

 penna in N.W. Donegal. 



The three Testacellce and Ccecilia?iella acicula have mainly a south- 

 eastern range, though the latter is found very sparingly at one locality 

 on the coast of Clare. Kilkenny, however, seems to be its head- 

 quarters, Mr. P. H. Grierson having collected it recently in ten 

 stations in the south-east counties, all on limestone areas. 



The species which occur mainly in the eastern counties are Helix 

 pisana, abundant, but confined to a narrow strip of sand-hills along 

 the north Dublin, Meath, and south-east Louth coasts ; some records 

 further south require verification. Helix hortefisis is much more 

 plentiful on the eastern margin of the limestone plain than elsewhere, 

 especially Dublin and Meath, though it runs north into three stations 

 in Down, Tyrone, and Donegal, very local and scarce in all three. 



Sphceriiwi lacustre is also an eastern species, perhaps more abun- 

 dant in two north-east stations than elsewhere, but it has two or three 

 outliers in the south-west. Small ponds seem its favourite habitat. 

 It is rarely plentiful. 



Hydrobia ventrosa lives in two estuaries on the east coast and two 

 on the west, possibly several others, but P. jenkinsi has mainly an 

 eastern distribution, though it is extremely plentiful on the north 

 Derry coast, and also occurs in Clare, Kerry, and Cork. 



Three species are confined chiefly to the hmestone plain, one of 

 them, Planorbis corneus, entirely so, and to a restricted area not far 

 west of Dublin, where, however, it is plentiful. Clausilia laminata 

 has now been recorded from five localities, three on the central plain 

 in Cavan and Westmeath, and one each in Fermanagh and Sligo. 

 Amphipeplea glutinosa is more abundant in the centre of Ireland than 

 elsewhere, sometimes very plentiful in a small lake near Clonbrock. 

 It is, also, sometimes moderately common but local in the drains off 

 the Bann, near Portadown, in the north-east, where W. Green has 

 collected it in mid-winter from under the ice. 



Of northern species. Vertigo alpestris is the most marked ; it has 

 now been recorded from one locality each on the coast sandhills of 

 Antrim, Derry, and Donegal, always extremely rare. Helix arbus- 



I Vol. 12, p. 13, Jan. 1903. 



