Vol.. 121. 



OCTOBER 1st, 1909. 



[iXo. 12. 



THE 



JOURNAL 



OF 



CONCHO LOGY. 



BEING THE ORGAN OF THE CONCIJOLOGICAL SOCIETY 

 OF GREAT BRITAIN AND IRELAND. 



ri'BMSIlEU QUAUT£RIA'. 



Hon. Editok : 

 J.R.leB.TOMLIN,I\I.A.,F.E.S. 



Stonei.ev, 

 Alexandra Rd., Reading. 



Hon. Secketaky: 



Rev. L. J. SHACKLEFORl), 



66, Granville Road, 



BlaCKI'OOL. 



Hon. Xkeasuuek : 



E. D. BOSTOCK, 



Holly House, 



Stone, Staffs. 



CONTENTS. 



Title-Page, Contenl.s, etc. 



On the Former Occurrence of Unio (Margaritana) margaritifer L. in 



the River Thames — J.W.Jackson 



Sexual Differences in the Shell of Cyclostoma elegans — A. \\. 



Boycott 



Carychium minimum var. elongatum nov. from Chatburn — J. ^^' 



Baldwin 

 Notes on the Mollusca of the Valley of the Colne — J. E. Cooi'KK 



and A. LOYDKix 



Proceedings: June 9, 1909; Septembers, 1909 



Addenda to Grange Mollusca — H. Beeston .. 



On a Habitat of Acicula lineata — J. A. Hargreaves 



Bibliography 



Index 



326 

 327 

 329 

 331 

 332 



LONDON : L)ui.au & Co., 37, Soho Squake, \V. 



LEEDS : Tavi.ok Bkos., Sovereign St. | MANCHESTER: Shekrvft & Hughe.s, 



St. Ann's St. 

 BERLIN; Friedi.aknder & Sohn, Caki.strasse it. 



