Vol. VI. No. 5. 



JUNE, 1905. 



Price 5s, 



PKOCEEDINGS 



MALACOLOGICAL SOCIETY 



OF LONDON. 



EDITED BY 



E. A. SMITH, I.S.O., F.Z.S. 

 Tinder the direction of the Publication Committee. 



AUTHORS ALONE AKE KESPONSIULE FOK THE STATEMENTS IN THEIR RESPECTITK 



PAPERS. 



OOIsTTEIN'TS. 



Proceedings : — page 



Annual Meeting, Feb. 10th, 1905 246 



Ordinary Meetings : 



February 10th, 1905 248 



March 10th 249 



April 14th 249 



Obituary Notices 250 



Presidential Address : Variation 

 in Eecent Mollusca. By E. R. 



Sykes, B.A. (Figs.) 253 



Notes : — 



On the Horizon and Locality of 

 the Type-specimen of Pleuro- 

 nautilus pulcher. By G. C. 

 Crick, F.G.S 272 



On the Vitality of three Species of 

 Zittorina. By E. A. Smith, 

 I.S.0 272 



Papers : — 



On a Dibranchiate Cephalopod, 

 Styracoteuthis orientalis, n. gen. 

 and n.sp., from the Eocene of 

 Arabia. By G. C. Crick, 



F.G.S. (Figs.) 274 



Descriptions of seven new species 

 of Marine Mollusca, etc. By 

 G. B. SOWERBY, F.L.S. 

 (Figs.) 279 



LONDON : 



DULAU & CO., 



37, SoHO Square, "W. 



Papers continued : — pagk 



On the occurrence of Internal Septa 

 in Glyptostoma Neioherryannm. 

 ByG.K.GuDE, F.Z.S. (Figs.) 288 



On a Dart in the Body- cavity of 

 Helix aspersa. By R. G. 

 Barnes. (Fig.) 284 



Anatomical and Systematic Notes 

 on Dorcasia, Trigonephrus, 

 n.gen., Corilla, Thersites, and 

 Cliloritis. By Professor H. A. 

 PiLSBRY, Sc.D. (Plates XIII 

 and XIV.) 286 



Some account of the Anatomy of 

 Cassidaria ruqosa (Linn.). By 

 Alexander Reynell. (Plate 

 XV and Figs.) 292 



On a small collection of Shells 

 from the Victoria Falls, Zambesi 

 River, with descriptions of new 

 species. By H. B. Preston, 

 F.Z.S. (Figs.) 300 



Descriptions of six new species of 

 Land Shells from South Africa. 

 By Henry C. Burnup. (Plate 

 XVI.) 302 



BERLIN : 



R. FRIEDLANDER & SOHN, 

 11, Karlstrasse, N.W. 



