NOTES FROM THE WEST OF IRELAND. 183 
covered stones. Hy. cellarta, Hy. alliaria, Hy. nitidula, and 
Flelix pulchelia occurred sparingly. On the shore of the island 
Succinea elegans var. ochracea was plentiful. In the Lough itself 
we found a peculiar dwarfed form of Zzmncea stagnalis, which 
seems identical with the var. fossarina from Lough Erne ; and 
L. palustris of a peculiarly obese form—which may be var. obesa 
Taylor, and is certainly quite unlike any we have hitherto seen. 
Under stones, in shallow water, we found numbers of small-sized 
Ancylus fluviatilis, all being the somewhat scarce var. g7bdosa 
Bourg. Planorbis albus, Pl. marginatus, Pl. contortus, Valvata 
piscinalts and a small form of Zzmnea peregra were all plentiful. 
Near Mr. Hodgson’s house we noted several specimens of 
Limax marginatus, and Arion ater. 
On the breaking up of the party on the 17th we had little 
difficulty in persuading several friends to accompany us to 
Roundstone, for Dogs Bay, and spent two days in a thorough 
investigation of the place. We may here observe that Dogs 
Bay is about a mile from the pretty village of Roundstone, and 
lies at the base of Errisbeg. The water to the west is called 
Dogs Bay—evidently a contraction of its Celtic name, Portna- 
feadog, z.e., ‘“‘the port of the plover”—and that to the east 
Gorteen Bay ; the two magnificent crescent-shaped strands are 
separated by an intervening ridge of sandhills, which form a 
narrow isthmus, connecting the mainland with an outlying 
peninsula called ‘‘ Earawalla.” 
Our chief object was to learn something definite about the 
large semi-fossil He/¢x nemoralis, found on the isthmus between 
the two bays, and to personally examine the remarkable deposit 
of land shells mentioned by Mr. R. D. Darbishire in the 
‘Journal of Conchology” for April, 18385 (vol. iv. p. 317). 
This deposit he describes as occurring in ‘‘an old sward which 
appeared as a black band about two inches deep, in the face of 
a small cliff or section of the sandhills closing the bay to the east- 
ward.” We could not find this ‘‘ black band,” so conclude that 
the features of the isthmus must have altered very considerably 
