100 



'Proceedings of the Royal Irish Acfjbdemy. 



(c) A smaller and still more slender 

 form than {V), and one wliicli I have 

 taken only in Vest Galway and "\S"est 

 Mayo, on tlie Aran Islands, and on the 

 Dingle promontory, ilany of my speci- 

 mens from the second locality have six 

 denticles, viz., one on the body- whorl, 

 two on the columella, and three on the 

 outer margin of the lip. 



Vertigo moulinsiana i^Dupuy). 



WD ED LD AK 



FE TY AE DO 

 WMSL LE MO 



EM EO CY LH 

 WG XG LF WH ME 

 SG EC ED DU 

 CL NT (JC CW ^VI 

 NK LK ST KE WX 

 SK MC EC WA 

 WC 



This species, which has only recently 

 been added to the Irish fauna by 

 Mr. Phillips, is much the largest of the 

 Britannic species of the genus, and is 

 easily distinguished from the next, to 

 which all previous records under the 

 name of Vertigo movJinsiana in Ireland 

 refer. The following notes on this 

 shell have kindly been supplied by 

 Mr. Phillips:- — "So far its range is 

 confined to the valley of the Eiver 

 Barrow ; and it has been taken in one 

 locality each in Carlow and Queen's 

 County. It is a gregarious species, 

 living in swampy marshes along the 

 banks of the river, spending the spring 

 and early summer months feeding low 

 down among the marsh-vegetation ; and 

 in the autumn may be seen in great 



numbers on the reeds and other tall 

 plants, on which it breeds and fina ll y 

 hibernates. It does not appear to be 

 particular as to the petrological nature 

 of its habitats, that in Carlow being on 

 granite, and the Queen's County one 

 being on limestone." 



Yertigo lilljeborgi AYesterlund. 



Vertigo moulinsiana, Scharff, Irish Kat., 

 p. 136, 1892. 



WD ED LD AN 



FE TY AR DO 

 WMSL LE ^-[0 



EM EO CY LH 



WG ^"& LF WH ME 



SG EC ED DU 



CL XT QC GW WI 



NE LE ST KK WX 



SE MC EC WA 



wc 



Although perhaps distributed spo- 

 radically over the western counties, it 

 is only recently that this shell has been 

 taken in any habitat other than that at 

 Ballynahinch, in West GuLway, where 

 it was first discovered by the late 

 Dr. Gwyn Jeffreys. Since the late 

 Dr. Chaster and Mr. Tomlin redis- 

 covered its habitat at Ballynahinch, it 

 has been found in several other locali- 

 ties in the same district and also in 

 AVest Cork, on the shore of Lough 

 Allua, and in a similar spot at the 

 southern end of Glenade Lough, in 

 Leitrim. In the former place, i. e. 

 Lough Allua, I took only one shell ; 

 but, as I mistook it for Vertigo anti- 

 vertigo, and recorded it as such, I 



