68 
The Irish Naturalist. 
March, 
water and mountain rivulets, provide the only habitats for the 
fresh-water moUusca. There are many old land-shell zones in 
the great dunes of Tramore, and some remnants at Trana- 
rossan sand-flat, but these will be described in a future paper 
on the Irish Pleistocene and recent deposits. As it is quite 
certain that old shells out of these deposits get into the modern 
wind-drifted shell-pockets. I mention separately species found 
in tlie latter. 
Most of the v/ork for this list was done in 1903-4-5, but I 
collected a^ number of species about Trabeg and Rosapenna in 
1893-94. I include a few species found at Doe Castle, near 
Creeslougli, and at lyougli Salt, where A. W. Stelfox's list 
just overlaps. 
List op vSpkciks. 
Vitrina pelluclda, Miill. — In large quantities in autumn on the 
Tramore vSand-clunes, AUve at Doe Castle, and also found in the 
shell-pockets. 
Hyalinia cellaria, Miill.— At Doe Castle only : some of these were so 
large that Dr. ScharfF thought they might be H. Draparnaudi, but 
some full grown living specimens are necessary to settle the question 
with certainty. In recent research work on the west coast, such 
large forms have turned up of this and other species, that the subject 
deserves special attention. 
H, alliaria, Miller. — Ganiamore, and abundant in the shell-pockets at 
Tramore. 
H. nitidula, Drap. — Bast slope of Ganiamore, Murder Hole, Doe 
Castle, and a small thin dark form at Lough Salt. 
H. pura, Alder.— Ganiamore, and in shell-pockets at Tramore, Rosa- 
penna. 
H. radiatula, Alder.— Ganiamore, rare. 
H. crystallina, Miill. — Not very common on Rosguill. 
H. nitida, Mull. —South slope of Ganiamore only. 
Arlon atcr, L — Fairly common on Rosguill, all jet black on the 
mountain above 400 feet altitude. 
A. hortcnsis, Fer.— Mevagh and Tranarossan^ common but local. 
A, intcrmedius, Normand.—Ver}' rare, Rosapenna only. 
Agriolimax agrcstis, L. — Very abundant almost everywhere. 
A. laevIS) Miill. — Fine large specimens in a ditch near Carrigart. 
Amalia Sowcrtoyi, Fer.— The hill above Rosapenna, rare. 
Hel!x pygmsea, Diap.— In shell-pockets on Rosguill only. 
H. rotundata, Miill. — Sparingly on Rosguill and common at Doe 
Castle. 
