132 PAPERS, ETC. 



Everetti, and Valvata minuta, must be dedacted, since 

 two are varietles, and tlie last the young, of other species. 

 The second list was read before the Somersetshlre ArdiEeo- 

 logical and Natural Hlstory Society, at Weston, in 1851, 

 by the Eev. W. R. Crotch, in a paper On the Recent Plauts 

 and Shells of the Weston district. It embraced forty species. 



One hundred and six species are included in the present 

 catalogue. Deducting five as perhaps erroneously recorded, 

 the remaining number of Somersetshire mollusca will be 

 found to exceed those hitherto met with in any county or 

 district. Mr. Alder's Catalogue of the Mollusca of Northum- 

 herland and Durham includes ninety-three inland species ; 

 and our own Notes on the Oxfordshire Shells, published in 

 the Zoologist of 1853 and 1857, ninety-five species. We 

 are not aware of any other catalogues which exceed eighty 

 species. 



It is not only, however, the number of forms, but also 

 the great productiveness of the individuals, which makes 

 the profusion of moUuscan llfe in Somersetshire so remark- 

 able. Perhaps three or four species may yet be added 

 from the eastern and south-western districts of the county. 



The nomenclature adopted (with one or two exceptions) 

 in this catalogue, is that of Forbes and Hanley's British 

 Mollusca. The synonyms added are the names that were 

 employed in Miller's Catalogue of British Shells. 



We have adopted Clifton into this list for the conve- 

 nience of naturalists resident in Bristol. Pupa minutissima 

 however is the only shell which takes its position here from 

 a Gloucestershire and not a Somersetshire locality. 



A few remarks on the characteristic species of the several 

 kinds of habitat may prove interesting. Of the land 

 mollusca, Gardens and Hedgehanks afford Arion hortensis, 

 Limax agrestis, cinereus, and Sowerbii, Tcstacella Maugei, 



