Vol.. 161 



JANUARY 1st, 1919. 



TllK 



[No. 1. 



JOURNAL 



OF 



C O N C H O L O a Y . 



FOUNDED 187-1. 



BEING THE ORGAN OF THE CONCHOI.OG ICAL SOCIETY 

 OF GREAT BRITAIN AND IRELAND. 



Hon. Editor : 

 J.R.i.eB.TOMLIN.M.A., 



Lakefoot, 

 Hamilton Rd., Reading. 



Hon. Seckktarv : 

 J. W. JACKSON, F.G.S., 



The Museum, 



The University, 



Manchester. 



Hon. Tkeasukkk : 



C. OLDHAM, F.L.S. 



The Bor.LiN, 



Shrubi.ands Road, 



Berkhamsted. 



LONDON: Dui.au & Co., Ltd., 37, Soho Square, W. i. 



Sold also at the Headquarters of the Society, 

 The Manchester Museum, The University, Manchester. 



Printed by Taylor Brothers, Sovereign Street, Leeds. 



CONTENTS. 



Constitution of the Conchological Society of Great Britain and Ireland 



List of Officers and Council for 1918-19 



List of Members ... 



A New Variety of Arion ater — W. Denison Roebuck 



Observations on the Local Variation of Clausilia bidentata — A. E. 

 Boycott 



Limnoea glabra Muller at Caldon Low, Staffs. — W. E. Alkins ... 



Proceedings: May 8, June 12, Sept. 11, Oct. 12 (Annual Meeting), 

 Nov. 13 



Field Notes on Helicodonta obvoluta Muller (to be concluded) — 

 H. Beeston 



24 

 31 



SPECiAiLi £:x:Ki:Birrs. 



January 8th 

 February 12th 

 March 12th - 



British Purpura. 

 British Littorina. 

 British Ena and Balea. 



