PROCEEDINGS : DEC. I3, I9II. 315 



It was further announced that, owing to the value and rarity of many of these 

 volumes, the Council had decided that these should be specially marked in, the 

 Catalogue which was being prepared as beipg available for reference 07ily. 



New Members Elected. 



Edmund Ridsdale Brown, 235, Brunswick Street, Manchester. 

 C. M. Standish, Prospect House, Weldbank, Chorley. 



Samuel Wood Geiser, Assistant in Biology, Upper Iowa University, Fayette, 

 Iowa, U.S.A. 



Names Struck off the List. 



The following names have been struck off the list in terms of Rule 4 :— 

 Miss G. M. Grint. C. M. Hall. 



Paper Read. 



" A Note on the Occurrence of Pisidhmi lilljeborgi Clessin in the Island of 

 Arran,"by Staff-Surgeon K. H. Jones, M.B., Ch.B., F.Z.S., R.N. 



Exhibits. 



By Mr. J. D. Dean : Very fine specimens of Olivancillaria brasiliana Lam. ;, 

 O. auricula} ia Lam. ; and Terebra salleana Desh., from Santos, Brazil; also a 

 series of exceptionally large Pahidestrina stagnalis ( = Hydrobia ulvcs) from the salt 

 marshes near Carnforth, Lanes. 



By Mr. G. C. Spence : Examples oi Holospira tryoni Pfr. , cut to show internal 

 structure, from which he demonstrated the chief specific characters indicated by 

 authors to distinguish between this species, Holospira tetralasviits Pilsbry, and II. 

 piloceri Pfr. ; apparently these shells agree so closely in external characteristics 

 that it seems annoying to have to break a shell open to find out what it is ! He also 

 sho\Ved a specimen oi Brachypodella seminiida C. B. Ad., with perfect spire, a con- 

 dition in which this shell is rarely seen ; and Caliaxis layardi Ad. & Ang., with 

 embryonic shells, eight in number, in situ in body whorl of the shell. 



By Dr. Hugh Brooksbank : Hygroinia revelata Mich., from some Cornish locali- 

 ties, viz., Goldsithney, Marazion, Oct. 26th, 191.0; Mousehole, Penzance, Oct. 28th, 

 1910 ; Nanjizal Bay, Land's End, Oct. 31st, 1910; Rosemullion, Falmouth, Nov. 

 I2th, 191 1 ; it occurred in plenty, and in late autumn the eggs are so abundant as 

 to show the whereabouts of the shells very readily. 



By Mr. R. Standen : An interesting series of Diplonniiatina from the Philip- 

 pines. 



By Mr. T. H. Piatt : A large number of species representative of the molluscan 

 fauna of Lake Tanganyika ; and varieties of Paludina victoriiE Smith, from the south 

 side of Lake Victoria Nyanza. 



By Mr. C. H. Moore : Littorina rudis var. jtigosa from Tenby ; Litnttipa stagnalis, 

 semi-fossil, from a deposit at West Kirby, Cheshire ; and a number of exotic 

 Cerithiida". 



By Mr. J. Kidson Taylor : Some very choice examples of Cyprcea tabescens and 

 its var. latior, C. pulchra, C. cinerea, C. pulex, C. suhrostrata, and exceptionally 

 fine C. cervus, with richly coloured and dark base; also some pretty forms oi Mitra 

 poiitipicalis and M. episcopalis. 



By Mr. E. "Collier: Helix hortensis ixom^2\\\x\^yox\, Surrey; a curious form 

 of var. incarnata, with lip coloration ranging from white to deep black, the whole 

 series otherwise showing uniform hortensis shape. 



It was decided to have the following Special Exhibits at future meetings : , 

 The Genus Eiicalodium and its Allies - Jan. 10, 1912. 



Japanese Land Shells - - -. - March 13, 1912^ . , . . 



