GASTEROPODA. 
295 
occurred to me in very numerous localities throughout the Counties of 
Down and Antrim, in the County of Londonderry, and in the glen of the 
Downs in Wicklow. By Dr. Harvey it was sparingly found several years 
ago on the marine sand-hills at Miltown Malbay (County Clare) ; more 
latterly by Mr. E. Waller, of Dublin, at Annahoe (County Tyrone), and 
Finnoe (County Tipperary) ; and by the Bev. B. J. Clarke, near Portar- 
lington (Queen’s County). At Twizel House, Northumberland, and Bal- 
lantrae, Ayrshire, I have collected this species. Draparnaud’s description 
and figure of H. pygmcea are most characteristic. 
H. alliaria , Miller, 
Although not an abundant species anywhere, is generally distributed 
over Ireland and her islands. From under stones at the sea-side to a 
great elevation on the mountains, — as near the summit of Divis, the high- 
est of the Belfast chain ; of Altavanagh, one of the mountains of Mourne, 
in Down ; and of Ben Bulben, in Sligo, I have met with it ; — all situations, 
from the exposed sea-shore and mountain-side to the umbrageous wood, 
seem alike to it. A greenish-white variety, and the shell strong, is much 
more common in Ireland than the yellow, which is ranked the ordinary 
state; from under the same stone I have procured specimens of both 
colours. The animal is blackish. M. Michaud remarked, on acknow- 
ledging Irish specimens from me, that they were H. nitida, Drap., junior. 
H. cellaria, Mull., 
Is common, and distributed over Ireland. It has a predilection for wet 
situations, and even from the bottom of drains, partially covered with 
water, some of my largest specimens were procured in the North ; the 
very largest Irish specimens — 7^- lines in diameter — I have seen were 
found in drains within the city of Dublin, by Mr. T. W. Warren, to whom 
I am indebted for them. From the stomachs of the blackbird and starl- 
ing I have taken perfect specimens of this shell. 
H. pura , Alder, 
Is distributed over Ireland ; it is usually found in moss, under stones, &c., 
in sheltered situations, but on sea-side pastures likewise I have met with 
it. The yellowish horn-coloured variety has in all parts of the country 
occurred to me more commonly than the hyaline shell ; the closely set, 
regular, and fine striae render recent shells of this species very beautiful. 
M. Michaud, on acknowledging Irish specimens of H. pura, observed that 
they were II. nitidula, Drap. 
II. nitidula, Drap. 
This species, most characteristically described by Mr. Alder (Newc. 
Trans., vol. i. p. 38), is common, and generally distributed over Ireland. 
In the North I have found it chiefly among mosses in glens and sheltered 
places. From two localities in this country I have seen Helices of crys- 
talline transparency, and in form intermediate between H. nitidula and 
H. alliaria. 
II. radiatula, Alder. 
This polished and well-marked species at every age — for when very 
young the regular and strongly-marked striae serve to distinguish it — 
has, since 1832, occurred to me in the County of Londonderry, in the 
neighbourhood of Dublin, and in very numerous localities throughout 
Down and Antrim. I have seen specimens which were collected at Anna- 
