XXXVI MOLLUSCA OF SOMERSET. 
Euconulus fulvus, Miiller. 
Pyramidula rotundata, Miiller. 
Helix granulata, Alder (rare). 
Helicigona arbustorum Linné (local). 
Carychium minimum, Miiller. 
The characteristic association of hazel and ash copses and 
hedges is the following : 
Pomatia elegans, Miiller (dominant) : witb 
Vitrina pellucida, Miiller. 
Vitrea cellaria, Miiller. 
Vitrea nitidula, Draparnaud. 
Hygromia rufescens, Pennant. 
Helix hortensis, Miller. 
Ena obscura, Miiller. 
Pomatias elegans (= Cyclostoma elegans), our only opercu- 
late land snail, abhors damp situations, and is almost invari- 
ably found beneath hazel on dry calcareous soils. 
In the ash copses of spontaneous growth on the dry slopes 
of the limestone hills we find : 
Ena montana, Draparnaud ; associated with 
Helix nemoralis, Linné (dominant). 
Pyramidula rupestris, Draparnaud. 
Hygromia rufescens, Pennant. 
Helix aspersa, Miiller. 
Jaminia secale, Draparnaud. 
Jaminia cylindracea, du Costa. 
Clausilia laminata, Montagu. 
Clausilia bidentata, Strdm. 
Clausilia rolphii, Leach. 
Ena montana is the characteristic species of the limestone 
hills of the south of England. It does not occur in the north. 
A reference to the Somerset records shews that it 1s by no 
means a common species in the county. Jaminia secale is 
another species with a restricted British range, being chiefly 
