i9o6. Stklfox.— A. 6* F, IV, Mollusca of N. IV. DonegaL 65 
Helix caperata, IMont.— A flourisliini? colony was discovered on Horn 
Head, whose headquarters appeared to be an old circus ring, Some 
extremely large shells were taken, and many varieties of colour, in- 
cluding one almost black referable to \a.r. fulva^ Moq. 
H. acuta, IMUll— I.ike //. cricctoruin very abundant on all sand dunes, 
H. ncmoralls, Tv. — Common everywhere. In some localities the 
white-lipped form was more common than the type. A beautiful 
lemon-coloured form, with translucent bands, was found nearBunbeg. 
In Glenveagli and Glen Ivough a few very fragile shells were collected 
— in fact by the time we reached home many of them were damaged. 
H. aspersa, Mull. — Very common on all old walls near all sand-hills, 
In myriads in graveyard of Magheragallon old church, covering the 
small wooden crosses, until in some cases the wood was scarcely 
visible. 
Cochllcopa Iul3 rlca,Miill.— Very common in all localities visited. 
Pupa angllca, Fer. — Fairly commou in woods at Glenveagli, In 
shell-pockets at Mullaghderg and Carrickfin. 
P. cylindracca, Da Costa. — Mostly small specimens wereeollected, 
but at Horn Head and Glenveagh very large thin shells were taken. 
P. lYiuscorum, Mull. — Common in all shell-pockets and found alive 
on Inishcoole. 
Vertigo edentula, Drap. — Dunlewy, Horn Head, and Glenveagh. In 
shell-pockets at Mullaghderg and Carrickfin, rare. 
V. pygrnsea, Drap.- -Very common in all localities visited. 
V. substrlata, Jeff.— Very rare alive, at Mullaghderg and Glen Lough. 
Common in all shell-pockets. 
V. antlvertigo, Drap.— Commou and very large where suitable 
surroundings were to be found— Bunbeg, Mullaghderg, Falcarragh, 
Horn Head, Sessiagh Lough, and Glen Lough. Also in shell-pockets 
at Bunbeg, Carrickfin, and Mullaghderg. 
V. angustior, Jeff.— Common in all shell-pockets, and though not 
taken alive, some of the shells from Mullaghderg were perfectly fresh 
and could not have been long dead. 
V. pusllla, Miill.— Like V. augustior this species was not taken alive 
but was fairly common in all shell-pockets. 
Balea perversa, L-— Found at Dunlewy, Horn Head, and Glen- 
veagh. At Horn Head the shells were living in dozens on the mortar 
of the old watch tower, which stands at the extreme north point. 
They were all very large and had splendidly formed lips, quite unlike 
anything we have seen before, except a few collected on Islandmagee, 
County Antrim, in August last year, by R. Welch and myself. It 
may be of interest to note that the nearest tree to the old watch 
tower mentioned, would be three miles away, most of which distance 
is occupied by bog-land, with a few small cultivated patches 
interspersed. 
Clausula bldentata, Strom — Generally distributed. 
