Vol. VI. No. 4. 



MAECH, 1905. 



Price OS. 



PROCEEDINGS 



MALACOLOGICAL SOCIETY 



OF LONDON. 



EDITED BY 



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

 Under the direction of the Publication Committee. 



AUTHORS ALONE AKB KESPONSIhLB FOR THE STATEMENTS IN THBIK RESPECTIVE 



PAPERS. 



OOlsTTEHSTTS. 



Proceedings : — page 



Ordinary Meetings : 



NoYember 11th, 1904 183 



December 9th 183 



January 13th, 1905 184 



Notes: — 



A Correction in Nomenclature, By 

 Edgar A. Smith, I.S.O 185 



Note on the Dates of Publication 

 of the various parts of Moquin- 

 Tandon's Hist. nat. Moll. terr. 

 et fluv. de France. By J. W. 

 Taylor, F.L.S 186 



Note on Geitodoris planata (Alder 

 and Hancock). BySirC.N.E. 

 Eliot, K.C.M.G 186 



Note on Oliva tiqridella, Duclos. 

 By F. G. Bridgman 187 



Note on Oliva ori/za, Lamarck. 

 By F. G. Bridgman 187 



Note on some Holocene Non- 

 Marine Mollusca from Walton 

 Heath, Surrey. By E. H. 



Chandler 187 



Papers : — 



Descriptions of three new species 

 of Opisthostoma from Sarawak, 

 North Borneo. By Edgar A. 

 Smith, I.S.O. (Figs.) 189 



On a new variety of Planispira 

 zebra from Gisser Island, and 

 a new species of Chloritis from 

 Java. By Rev. R. Ashington 

 BuLLEN, F.L.S. (Plate XI.) 191 



The Anatomy of certain species of 

 Siliqua and Ensis. By H. H. 

 Bloomer. (Plate XIL) 193 



On the genus Tomigerus, Spix, 

 with descriptions of new species. 

 ByDr.H.voNlHERiNG. (Figs.) 197 



LONDON : 



DULAU & CO., 

 37, SoHO Sqvabe, "W. 



ViL^^^s, continued : — pagk 



Notes on some New Zealand 

 Pleurotomidae. By H. Suter. 2u0 



Notes on some species of Chione 

 from New Zealand. By Henry 

 Suter 202 



Note on Mr. Suter' s paper on 

 species of Chione from New 

 Zealand. By Edgar A. Smith, 

 I.S.O 206 



Description of a new species of 

 Trachiopsis from British New 

 Guinea. By H. B. Preston, 

 F.Z.S. (Fig.) 207 



An arrangement of the American 

 Cyclostomatidie, with a revision 

 of the nomenclatui-e. By Prof. 

 W. H. Dall, D.Sc 208 



A review of the Genera of the 

 family Mytilidae. By A. J. 

 Jukes-Bkowne, B.A., F.G.S. 211 



Note on the tj-pe of Geomelania, 

 PfeifEer, with the description of 

 a new species. By E. R. Sykes, 

 B.A. (Figs.) 225 



On three species of Byakia from 

 "Western Sumatra. Bv E. R. 

 Sykes, B.A. (Figs.)" 227 



On some Nudibranchs from the 

 Pacific, including a new genus, 

 Chromodoridella. BySirC.N.E. 

 Eliot, K.C.M.G . 229 



Notes on two rare Biitish Nudi- 

 branchs, Hero formosa, var. 

 arborescens, and Staurodoris 

 maculatn. By Sir C. N. E. 

 Eliot, K.C.M.G 239 



Description of a new species of 

 Achatina from the Zambesi. By 

 H.B.Preston, F.Z.S. (Fig.) 244 



BERLIN : 



R. FRIEDLANDER & SOHN, 

 11, Karlstrasse, N.W. 



