17S 



PROCEEDINGS OF THE ' 



CONCHOLOGICAL SOCIETY OF GREAT BRITAIN & IRELAND. 



427th Meeting, held at the Museum, Manchester, Dec, lOth, 1913. 



Mr. E. Collier in the chair. 

 Additions to the Library : — 



The Librarian reported that the usual periodicals and exchanges had been 

 received, and thanks were voted. 



The thanks of the Society were also accorded to the Rev. Professor H. M. 

 Gwatkin, D.D., for presenting his portrait for the Society's collection of Portraits 

 of Past Presidents. 



New Member Elected. 



A. Harman, 5, Harley Street, Scalby Road, Scarborough. 



Resig^nations. 



W. G. Reynolds. 

 F. B. Jennings. 

 H. G. Gower. 



Deaths. 



Dr. Fitzsimons ; Dr. Plant. 



Revision of the Roll of Members. 



In accordance with Rule 4, the following names were reported as having been 

 struck off the Roll : — 



Messrs. Colwell, Cundall, Dalgleish, Ensor, Harrington, Ward, and Walton. 



Paper Read. 



" Clansiiia diihia Drap. at Dover," by J. Davy Dean. 



Exhibits. 



By Professor A. E. Boycott : — Hyalinia helvetica (i) from Tremadoc, Carnar- 

 von, with normally coloured shell, and animal in which there is none of the normal 

 black pigment, the mantle edge being red— evidently the same condition as 

 described by C. Oldham {Journal of Cojichology, xiii., p. 312). (2) from Banstead, 

 Surrey, with white shell and normally pigmented animal. 



By Mr. J. Davy Dean : A series of Clausilia bideniata, C. dnbia, C. craven- 

 eusis, and their clausia, to illustrate his paper. 



By Mrs. Gill : Series of South African Achatina ; South American Orthalicus ; 

 Porphyrobaphe adafiisoni ; and BtiUmits dux. 



By Mr. Thos. Edwards : Cypi'cea aitraniia, Cy. arabica var. eglanfjna, and var. 

 reticulata ; and an interesting and very perfect sinistral, c?iXina.\.Q B7icci7ium Jindatum 

 from the Kentish coast. 



By Mr. F. Taylor : Hclicigona lapicida showing extreme variation in colour, from 

 albina to very dark forms, from near Lynmouth ; Unio niargaritifer and pearls, 

 from River Lune ; Plelix virgaia, var. alba, and var. ochroleuca, ixom near Llan- 

 dudno ; Physa heterostropha from a mill lodge at Chadderton, Oldham, where it 

 occurred this season in thousands, and has probably been inti'oduced with cotton, 

 as there is no connection with any canal or other body of water, the sole supply 

 being derived from the Corporation main. 



By Mr. G. C. Spence : Newly described Urocoptis (^Gongylostonia) cara P. & H., 

 from San Jose Rocks, S. Clara Province, Cuba ; also species of Ano/na and Placo- 

 styhis porphyrocheihis Dautz. 



