IQI4- 
Stklfox. — Mollusca of Coimty Derry. 
129 
Pyramidula rotundata, Mull. — N'ery common. XNX. 
Helicella itala, I>. — Common on the sandhills of Magilligan. By the 
railway at Limavady Junction. NNN. 
H. intersecta, Poir. — Abundant in places, from Magilligan Point to Down- 
hill. On the boundary wall of Tamlaght Woods (Milne). NNN. 
H. barbara, L. — Common on the Magilligan sand-dunes, the western form. 
The eastern form, var. hizona, so abundant at Portstewart, does not 
occur west of the river Bann so far as I am aware. NNN. 
Hygromia fusca, Mont. — In the gullies, between 1,000 and 1,100 feet alt., 
on the cliffs of Benevenagh. Common in the glens of Banagher, 
Walworth W'ood, Tamlaght, and Umbra (Milne). NNN. 
H. hispida, L. — Generally distributed, to 1,000 feet on Benevenagh and 
1,200 feet on Benbradagh. NNN. 
H. rufescens, Auct. — Two colonies of this species exist in the district at 
least ; but it is evident that it owes its origin in both cases to man. 
The two stations are (i) on rubbish thrown out of gardens, by the 
river at Limavady, and (2) by the wall of Sir Harvey Bruce's demesne, 
above Downhill station. ***. 
Acanthinula aculeata, Miill. — Common in Walworth Wood, Roe Park, and 
in woods between Umbra and Magilligan station. NNN. 
A. lamellata, Jeff. — Abundant in Walworth Wood and in the Glens of 
Banagher. X'ery common in Tamlaght Woods (Welch, 1904). NNN. 
Vailonia pulchella, Miill. — Common on the sand dunes of Magilligan. Near 
Downhill and abundant in flood debris at Limavady Junction (Welch, 
1903). NNN. 
V. COStata, Miill.— On dry sandhills at Magilligan (Milne, 1.S92). NNN. 
Arianta arbustorum, L. — \'ery common on limestone by the lord over 
the Owenrigh, below Carnanbane, in the Glens of Banagher. At 
Dungiven Abbey and on damp river bank in Benady Glen, two miles 
above the Abbey, where the river appears to have cut through a 
Glacial lake -deposit. Hitherto A. arbustorum has been found in 
Derry, only near Coagli. It will, no doubt, be found to inhabit the 
glens on the Tyrone slope of the Sperrins. While the specimens 
taken on the limestone near Carnanbane were of a rich brown colour, 
those from Benady Glen were very pale, some brown, some greenish - 
yellow, and all very fragile. NNN. 
.lelix aspersa, Miill. — Seems absent from the sandhills where one would 
expect to find it if it were native in the district. It, however, occurs 
in Roe Park (Milne) and on the railway at Limavady Junction. ***. 
H. nemoralis, Mull. — Frequent in the woods, common on the sand-dunes, 
and occurs on the basaltic cliffs of Benevenagh and Benbradagh to 
an altitude of at least 1,050 feet. NNN. 
H. hortensis, Miill. — Common by the roadside above Downhill, and taken 
by Mr. Welch in the adjoining glen. All the specimens so far observed 
have belonged to the vars. lutea or lutescens. Those referable to 
the former are of an extremely rich yellow, while the few belonging 
to the latter form have an almost greenish -white appearance. All 
are unbanded, and thus resemble the form of this shell which is found 
