PROCEEDINGS OF MALACOLOGICAL SOCIETY. l8l 



forms of this species peculiar to the district, I have never before been 

 fortunate enough to find a sinistral monstrosity. 



The shell and animal seem typical in sculpture, form, and colour, 

 having the peculiar looking glass appearance which seems to be 

 characteristic of such shells as are typically dextral. 



In looking up the literature upon this species I have failed to find 

 any mention of a sinistrorse monstrosity, possibly foreign literature may 

 contain such a record, and if so I should be glad of the reference. 



PROCEEDINGS OF THE 

 MIDLAND MALACOLOGICAL SOCIETY. 



2IST MEETING, September 14TH, 1900. 



The President in the chair. 



Several donations to the Library were announced, and thanks voted to the donors. 



EXIIIBIIS. 



By Mr. Overton : Marine shells from Bridlington. 



By Mr. Partridge: Limav maxivius v. cincro-nigcr, from Horner, Somerset- 

 shire ; Unio margaritifcr from the River Taw, Helix hortcnsis, H. lapicida m. 

 sinistrorsnm, nov. from Lynton, Nth Devon : and Acavus hacr~Mtostoma and 

 Cyclophorns ceylanicus from Ceylon. 



By Mr. Breeden : Shells of various local land and freshwater shells. 



By the President : Animal of Capulus hungarkus from Mumble's Head. 



22ND MEETING, September 14TH, 1900. 



The President in the chair. 



The evening was devoted to a study of Helix aspersa. The President gave a 

 short account of the life-history, distribution, and variation of the species illustrated 

 by numerous specimens. 



Mr. Wiildughhy Ellis exhibited about 300 specimens, and Mr. Breeden a smaller 

 collection. Specimens of Helix rufcsccns from Knowle, Warwickshire, were also 

 exhibited by Mr. Ellis. 



23RD MEETING, November qth, 1900. 



The President in the chair. 



Papers Read. 



1. On the Anatomy of Certain Agnathous Pulmonate Molluscs. 



By Walter E. Collinge. 



2. On some further malformed specimens of Anodonta cygnca, L. 



By H. H. Bloomer. 

 Exhibits. 



By Mr. Bloomer: Specimens in illustration of his paper, also shells of Helix 

 nemoralis. A short account of the nomenclature, variation and distribution of H. 

 nemoralis was read, the remainder of the evening being devoted to the examination 

 of the various collections of this species contributed by the President, and Messrs. 

 Bloomer, Breeden, and Overton. 



