CONTENTS OF VOLUME VI. 



PAGES 



On the Anatomy of BuUmus sinistorsus, Deshayes (Plate I.) 



William Moss and Wilfred Mark Webb, F.L.S. i 



A few Notes on Slugs . . Professor T. D. A. Cockerell, F.Z.S. 3 



On the specific name of Helix cricetorum Miiller . . A. Santer Kennard 6 



Some Observations on Certain Species of Avion (Plate II.) 



Walter E. Collinge, F.Z.S. 7 



Books Received .. .. .. .. 11,29,39 



Notes .. .. .. .. .. •• 15' 43 



Some Sciagraphs of Shells (Plate III.) . . Wilfred Mark Webb 



Supplement to No. i, follows page 16 

 Notes on Helix ncmomlis, Linne, and Helix lioiiensis, Miiller 



Rev. J. W. Horsley, M.A. 17 

 Note on the Clausiliae recorded from Celebes, with descriptions 



of New Species .. . . E. Ruthven Sykes, B.A., F.Z.S. 23 



The British Species of Testacella — conimweA. (Distribution) 



Wilfred Mark Webb, F.L.S. 25 

 Description of a New Species of Land Shell from Colombia 



Edgar A. Smith, F.Z.S. 27 

 On the Specific Name of Hellieella evieetoyum Miiller 



(With a Note by A. S. Kennard) Edgar A. Smith, F.Z.S. 28 



Editor's Notes . . . . . . . . . . 32 



On some New Species of Land Shells from the Island of 



Socotra (Plate V. frontispiece) Edgar A. Smith, F.Z.S. 33 



Species of Plectopylis recently described in " Science Gossip " 



by G. K. Gude . . . . . . . . . . 44 



The British Species of Testacella, continued — Distribution 

 and Reproductive System (PI. VI.) 



Wilfred Mark Webb, F.L.S. 49 

 The Distribution of British Non-Marine Mollusca, I. Hand List for 



Essex . . . . . . . . . . • • 57 



List of Species described for the first time in this volume . . next page. 



Index to this Volume . . . . . . . . . . 60 



