ZOOLOGY 



MOLLUSCS 



The published accounts of the Berkshire Mollusca are few and 

 relate principally to the neighbourhoods of Wellington College l and of 

 Oxford 2 : these, supplemented from the observations of Mr. W. Holland 

 and the Rev. S. S. Pearce, as well as the Records of the Conchological 

 Society, have yielded a list of 97 species. Seeing that the soil and 

 physical features of Berkshire are such as to favour the development 

 of molluscan life this number is not high ; but several other forms out 

 of the 139 known to inhabit the British Islands should be forthcoming 

 with further investigation. 



Although Helix pomatia, the Roman snail, has been named as 

 occurring in the county (Nature, xxviii. 8 1 ) this is apparently an error, 

 at the same time its absence is unaccountable, seeing that it is found not 

 far from the border in Oxfordshire, and there is no obvious reason why 

 it should not be present in Berkshire as well. 



The most noteworthy species in the fauna is the pretty little 

 Acanthinula lamellata, a single specimen of which was found by Mr. 

 Holland in a ditch by Theale Lock near Reading. This species had 

 not previously been found living further south than mid Staffordshire, 

 though in Pleistocene deposits it has been met with in Essex and at 

 West Wittering near the coast of Sussex by the Hants border. 



Except for the presence of this northern form the assemblage is of 

 an average British facies. 



A. GASTROPODA 



I. PULMONATA 

 a. STYLOMMATOPHORA 



Testacella maugei, FeY. Faringdon 



haliotidea, Drap. Reading 

 - scutulum, Sby. Faringdon 



Limax maximus, Linn. 



flavus, Linn. 



arborum, Bouch.-Chant. 



Agrlolimax agrestis (Linn.) 



/avis (Mull.). Wytham Hill 

 Vitrlna pelludda (Mull.) 



Vitrea crystallina (Mttll.) 



lucida (Drap.). Near Reading 



alliaria (Miller) 



glabra (Brit. Auct.) 



eel/aria (Milll.) 



nitidula (Drap.) 



l H. W. Monckton, Rept. Wellington Coll. Nat. Hist. Sue. 1888. 



9 J. F. Whiteaves, 'On the Land and Freshwater Mollusca inhabiting the neighbourhood of 

 Oxford' (Aihmolean Society), 1857. 



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