124 The Irish Nahiralist. June, 



Helix pygftnaea, Drap.— Decideclly rare; under stones at the marsh 



only. 

 H, rotundata, Mtiller.— A high-spired form, not uncommon in green- 

 house. Type common in most places, with a few of the flat form 

 {turtoni, Flem). 

 H. pulchella, Mullen— The typical form was abundant in the dampest 

 part of the marsh at grass-roots and under stones, but the ribbed 

 form (var. costatd), was only found on the very dry ridge between the 

 marsh and the Dodder. 

 H . hisplda, Iv.— A few on a bank near the marsh. This very common 

 species of the north-east seems replaced in Co. Dublin largely by 

 the next. 

 H. rufescens, Penn. — This is abundant everywhere, as usual on the 

 limestone; though it is very local and usually rare in Ulster, where 

 the previous species is common. 

 H, vlrgrata, Da Costa. — Several colour forms abundant on the upper 



margin of the Boulder-clay scarp. 

 H. ericctorum, Mtill.— Common with the last-mentioned. Some 



were the var. lentighwsa, Moq. 

 H. acuta, Mull. — The var. strigata, Menke, occurred equally com- 

 monly with the type, and was as local as the last two species. 

 H. nemoralis, Miill. — A few in woods and about brambles. 

 H, aspersa, Miill. — Local, mainly about old walls. 

 Cochllcopa lubrica, Mull.- Common. 



CccclIIanella aclcula, Mull. — The Agate Shell, an underground liver 

 which we had never taken before, turned up first in a green-house, 

 Sir F. W. Shaw finding one dead specimen under a pot of Aspidistra. 

 On examining the earth about the roots of the plant five more 

 specimens were found, some alive. Three day.s later it was taken 

 alive and dead under moss on the ridge between the marsh and the 

 Dodder, far away from the gardens. Dr. Scharff informs us that 

 this rare species is noted as abundant from debris of the Dodder, in 

 the Waller Collection, Natural History Museum, Dublin. 

 Pupa ang°IIca, Fer.— Common in one greenhouse, and a few in woods 



in damp moss. 

 P. cyllndracea, Da Costa. — Plentiful. 



Vertigo edentula, Drap. — A few at the marsh alive in autumn; 

 abundant under beech leaves in wood near the shell-house in spring, 

 but almost all dead. 

 V. pygmaea, Drap.— Fairly common under stones at the marsh in 



autumn. 

 V. substriata, Jeff. — Very rare ; at the marsh only. 

 V. antivertlgo, Drap.— In profusion under stones at the marsh in 

 autumn, but one specimen only seen in spring. Vertigos are, we 

 find, usually rare under stones between March and September. 

 Balea perversa, L.— A few at the marsh only. 



Clausula bidentata, StrSm.— Along the base of walls, oy trees, in 

 mo.^s, &'C., as usual. 



