tyi2. Stklfox. — Tcrrcsfriai I\follusca of the Btaskds. 189 



formula of 00300 — the third band often being abnormally broad and 



sometimes split— were common. 



Some specimens taken on the dry slopes of the island did not measure 



more than 17.5 mm. in diameter. These contrasted strongly with the 



large race found at Foilbeg, some of which reached a diameter of 24 or 



25 mm. 



Cochlicopa lubrica (Miill.) — Not common, but generally distributed. 



Pupa anglica (Fcr.) — Typical examples were found to be common in 

 the northern and eastern gullies, \"ar. pallida occurred frequently, 

 while var. alba was taken at Foilbeg and with V. siibstriata. 



P. cyh'ndracea (Da Costa). — Everywhere, even to the western extremity 

 and to the summit of the Fatal Cliff (over 900 feet). Most examples 

 were referable to the var. anconostowa Lowe. (See Proceedings R. I . 

 Acad., vol. xxxi., part 2i^, pi. ii., figs. 47, 48 & 49.) 



Vertigo substriata (Jeff.) — A single specimen was taken in damp moss at 

 about 800 feet on the northern escarpment of Slievedonagh. 



Clausilia bidentata (Strom). — Frequent in the damper parts of the cliffs. 



Carychium minimum (Mull.) — Common in similar situations to the last 

 species. 



Limnaea truncatula (]\Iiill.) — This, the sole representative of the fresh- 

 water molluscs, occurred in countless hundreds in one spot at Foilbeg 

 where sheets of the alga Cladophora crispata^ grew over wet rocks. 



Above the spot where L. tnincatula was found, are several 

 artificially constructed pools, but no fresh-water shells were 

 seen in these. In wet weather, rain-pools must form 

 likewise on the flat peaty ground between the Signal Tower 

 and Slievedonagh, but I was unable to find any shells here 

 either. 



All the species in the foregoing list are to be met Vv'ith on 

 the opposite mainland of Kerr3^ the Dingle peninsula, and 

 all are generally distributed throughout Ireland, with the 

 exception of H. virgata, which is absent from the north- 

 western quarter comprising the county divisions of East 

 and West Mayo, Sligo, Leitrim, Fermanagh, East and West 

 Donegal, Derry and Tyrone. 



On the sandy cliffs at Trabane are \'arious deposits 

 containing land-shells. None of these, however, appear to 

 be of great age, though in several cases they are from four 

 to five feet in depth. The following shells were taken in 

 these deposits : — Hyalmia cellaria, HeliceUa itala, H. 

 inter secta, H. harhara, Helix aspersa, H. nemoralis, Cochli- 

 copa lubrica and Pupa cylindracea. 



IXT 



Named by Mr. Wm. West. 



