150 



Mr. Kenneth McKean. 



under moss growing on stones in cool dark woods. I have 

 noticed the species at Gatton, Winder's Hill, and Tadworth. 



Acliati>ia aciaila was mentioned last year as occurring on 

 Park Hill. 



CarycJiimn minimum only requires looking for; it lives in 

 vast numbers under decaying leaves in most of our beech 

 woods. Conovnhis hidcntatus is found at Erith, under the 

 blocks of chalk which face the dykes, but so high up as to be quite 

 beyond the reach of any ordinary spring tide. Cyclostoina 

 elegans is a well-known shell in this part of the county. It 

 keeps prett}' closely to calcareous soils. Acme lineata is said 

 to have been taken at Gatton but I have not found it myself 

 anywhere in Surrey. 



Appended is a detailed list of the Mollusca taken in the club 

 district. 



In the list it will be noticed that several species are wanting 

 which there is every reason to believe exist within the district, 

 and I would take this opportunity of reminding members that 

 the Zoological Sub-Committee (instituted by our late deeply- 

 lamented President, Mr. John Flower, for collecting data with 

 regard to the Natural History of the Club's working ground) 

 will always be glad to receive any notes upon this subject, 

 however insignificant they may appear. It is only by pulling 

 together as a Club that we can hope to make these lists perfect. 



List of Mollusca taken in the Club district : — 

 Aquatic. 



Sphserium corneum 



,, ,, (var. flavescens) 



,, rivicola 



,, lacustre 



Pisidium amnicum 



,, fontinale 



, , ,, (var. pulchella) 



,, ,, (var. cinerea) 



,, pusillum 



,, ,, (var. obtusalis) 



,, nitidum 



,, roseum 



Unio tumidus 

 ,, pictorum 

 ,, ,, (var. radiata) 



Anodonta cygnea 



,, anatina 



,, ,, (var. radiata) 



Dreissena polymorpha 

 Neritina fluviatilis 

 Paludina vivipara 

 Bythinia tentaculata 



„ Leachii 

 Valvata piscinalis 



„ cristata 



Assiminea Graj'ana 

 Hydrobia ventrosa 

 Planorbis nitidus 



,, nautileus 



,, albus 



,, spirorbis 



,, vortex 



,, carinatus 



„ complanatus 



,, corneas 



„ ,, (var albina) 



,, contortus 

 Physa hypnorum 

 ,, fontinalis 

 Limnaea peregra 



„ auricularia 



,, stagnalis 



,, ,, (var. fragilis) 



,, palustris 



,, ,, (var. conica) 



,, ,, (var. decollata) 



,, „ (var. roseo labiata) 



,, truncatula 

 Ancylus fluviatilis 



„ lacustris 



