ol. XIV. Parts V & VI. OCTOBER, 1921. 



Price £1 net. 



P K O C E E D 1 1^ G S 



HALACOLOGICAL SOCIETY 



OF LONDON. 



Edited by B. B. WOODWAED, F.L.S., etc., 

 Under the direction of the Publication Committee. 



AUTHORS ALONE ARE RESPONSIBLE FOR THE STATEMENTS IN THEIR RESPECTIVE 



PAPERS. 



GOlSTTEnSTTS. 



Proceedings : — page 



Ordinary Meetings : 



March 11th, 1921 161 



April 8th 161 



May 13th 161 



June 10th 162 



Papers : — 



Notes on the Distribution of 

 British Non-Marine Mollusca 

 from the point of view of 

 Habitat and Climate. By 

 Dr. A. E. Boycott, F.K.S. 

 (Pls.Vcfe VI.) 163 



(Ecological Notes. II. By Dr. 



A. E. Boycott, F.E.S 167 



Description of a new Phasia- 



nella (P. Tomlini) from 

 Western Australia. By J. H. 

 Gatliff and C.J. Gabriel. 



(Figs.) 173 



On Helicella, Ferussac. By 

 G. K. GuDE, F.Z.S., and 



B. B. Woodward, F.L.S.... 174 



Papers continued ; 



PAGE 



Anatomy and Kelationships of 

 Helix stibplicata, Sby. By 

 Prof. T. D. A. COCKERELL. 

 (Figs.) 191 



Helix pisana in Porto Santo. 

 By Prof. T.D. A. COCKERELL 196 



Molluscan Nomenclatural Pro- 

 blems and Solutions. No. II. 

 By T. IREDALE 198 



Notes on some species of 

 Pisidiiim (and Addendum). 

 By B.B. Woodward, F.L.S. 209 



Notes on Pearl formation and 

 Japanese Culture Pearls. By 

 T. H. Haynes. (Pis. VII 

 & VIII, & Figs.) 221 



The Mollusca as Material for 

 Genetic Besearch. By G. C. 

 EOBSON, F.Z.S 227 



Index 



Title-page, etc. 



232 



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