23 18 Proceedings of the Roi/al Irish Academy. 



[A. hortensis Fer. — Several half-grown examples, with Limax mwximus and 

 other slugs, in the garden opposite the hotel at the harbour. Evidently 

 introduced with plants or other imports.] 

 A. circumscriptus Johnston. — As on Achill and in parts of the mainland, this 

 species was distinctly local on Clare Island. It is probably common on 

 the northern escarpment of Knocknaveen during winter, as well as along 

 the north-east coast. 

 Punctum pygmaeum Drap. — Fairly common at the roots of herbage along 

 the southern and north-eastern coasts of the island. Also taken on 

 the cliffs of Knocknaveen and Croaghmore and among the scrub above 

 Portlea. 

 Sphyradium edentulum Drap. — Particularly common on Croaghmore and on 

 the southern slope of Knocknaveen, overlooking the Harbour, and occurred 

 also in several places round the southern coast. This seems to be one of 

 the species which ranges over the most peaty areas, as I took several 

 examples under a stone upon the heathery slope south of the lighthouse, 

 associated with Z. excavatus. 

 Pyramidula rotundata Mull. — Generally distributed, and, though not abundant 

 everywhere, is one of the commonest species on the island. All specimens 

 were pale and many almost unicolorous. 

 Acanthinula aculeata Miill. — Sparingly in moss above Lough Avullin and on 

 the cliffs of Knocknaveen and Croaghmore. Several pure white specimens 

 were taken by the late Dr. Chaster in the second locality. 

 A. lamellata Jeffreys. — In the same localities as the last — except on Knock- 

 naveen — but common only in the remnants of old scrub above Lough 

 Avullin and Portlea. 

 Vallonia pulchella Miill.- — Taken in great numbers by E. J. Welch round and 

 upon some large boulders sunk in the earth near the lace school, east of 

 the Harbour. Also frequent along the southern cliffs, and one specimen 

 occurred to me at 250 feet on the southern shoulder of Knocknaveen. 

 Helicella itala L. — A small dark-banded form occurs on the sand-flat at the 

 Harbour, those found along the southern and north-eastern cliffs being 

 much larger and paler in colour. In the latter station the shell lives on 

 banks of stiff Boulder-clay, which, although containing calcareous matter, 

 are nevertheless a somewhat strange habitat for this species. 

 H. intersecta Poiret. — The large western form of this shell is common in a 

 very restricted area on the sand at the Harbour and for a short distance 

 up the road leading to Maum. (Plate II, fig. 51.) 

 Hygromia fusca Mont. — Common on the cliffs of Knocknaveen, and on 

 Croaghmore to an altitude of about 1,300 feet, or as high as there is 



