130 
The Irish Naturalist, 
June, 
about Strabaiie and Newtownstewart, twenty -five miles to the south- 
west, in Co. Tyrone. To the east the nearest known habitat for this 
shell is thirty -five miles distant, where it occurs in the neighbourhood 
of Slemish, in Antrim. In the Antrim station the five -banded typical 
form has alone been found up to the present. It is thus evident that 
long ages must have elapsed since these various colonies were isolated 
from each other. NNN. 
Cochlicopa lubrica, Miill. — Of general occurrence, but seems unusually 
rare on Benevenagh, and was not seen by me there until the occasion 
of my third visit. Abundant on the sand-dunes at Magilligan Point 
(Milne). NNN. 
Pupa anglica, Fer. — Common in places about Dungiven and in Walworth 
Wood, Tamlaght Woods, and very common below cliffs at Downhill 
(Welch). NNN. 
P. cylindracea, Da Costa. — Common everywhere. NNN. 
P. muscorum, L. — Common in flood debris in the " intake " at Limavady 
Junction (Welch, 1903). Magilligan Point (Welch, 1896), and near 
Downhill (Milne and Welch, 1900). On the boundary wall of Tamlaght 
Woods (Milne), and one specimen actually in the woods (Welch), 
probably brought inland with sand to " manure " the fields. All 
the specimens are referable to the western form of the species. 
NNN. 
Vertigo SUbstriata, Jell. — Frequent in moss in Benady Glen, Dungiven. 
Near Downhill (Welch, 1900). NNN. 
V. pygmaea, Drap. — Does not appear common in the district. Walworth 
Wood (Milne), and in the marsh by the river below Dungiven Abbey. 
NNN. 
[V. pusilla, Miill. — Holocene. In shell-pockets in the sand-dunes of 
Magilligan (Welch and Milne)]. 
[V. angustior, Jeff. — Holocene. In shell -pockets in the sand-dunes of 
Magilligan (Welch and Milne).] 
Balea perversa, L. — On Benevenagh and on the parapet of bridge on the 
road from Dungiven to Maghera, near Cashel. Bellarena and Wal- 
worth Wood (Milne). NNN. 
Clausilia bidentata, Strom. — Generally distributed. NNN. 
Succinea putris, L.— By the edge of a drain on the Magilligan flat (Milne). 
NNN. 
S. Pfeifleri, Rossm. — In the marshes by Limavady Junction. NNN. 
Carychium minimum, Miill. — Generally distributed and common. Not 
seen at Benevenagh. NNN. 
Pliytia myosotis, Drap. — On the sea dyke, near Limavady Junction. Type 
with the vars. denticulata and ringens. NNN. 
Ancylus fluviatilis, Miill. — Plentiful in the Roe at O'Cahan's Rock, near 
Limavady (Welch). In a small stream by the station at Magilligan 
(Milne). NNN. 
Limnaea pereger, Mull. — Frequent in the Roe Valley as far up as Benady 
Glen, and common in the marshes about Limavady Junction. In 
the Holy Well by the old church of Tamlaght, this shell is abundant, 
while it occurs also in the lakelet above this spot. NNN. 
