372 



JOUKNAL or CONCHOl.OGY, VOL. I3, NO. 12, OCTORER, 1912. 



page 



Shackleford, L. J. and J. R. le B. 

 Tomlin, Desciiplions of Two 

 New Species o[ Marginella from 

 San Thome Island ... ... 319 



Shell - drift at Ballinacurra, co. 



Limerick, II. Fogerty ... 98 



Shetland-Freroe Channel, Rare Mol- 

 lusca from the ... ... ... 109 



Shropshire Mollusca, Notes on, J. 

 W. Jackson ... ... ... 46 



Sikes, F. H., Crepidttla foruicata 

 L. and Petricola pholadifonius 

 lam. in the Medway ... ... 108 



— Non-Marine Mollusca of Fries- 

 land ... ,.. ... ... 69 



— Preliminary Conchological Sur- 

 vey of Monmouthshire, with 

 some Notes on Brecknockshire 6i 



Simpson, J., Notes on some Rare 

 Mollusca from the North Sea 

 and Shetland-Fasroe Channel... 109 



Sinistral Examples : 



Acicula lineata ... ... ... 151 



Biucimim iindatuiii ...25, 99, 15 1 

 Clausilia bidentaia (dextral) ... 274 

 Cochlicopa hihrica ... ... 75 



Gibbtis lyoniieiianus ... ... 253 



Helicella cantiana ... ■■■ 25 



— caperata ... ... 20, 45 



— itala ... ... ... 26 



— virgata ... ... 25, 124 



Helix aspersa ... ... 124, 178 



— potiiatia ... ... 125, 279 



Hyg7-oi)iia rufescens ... ... 14 



LivincEa mirictilaria ... .., 26 



Littorina littorea ... ... 26 



Neptmiea antiqiia ... ... 25 



Physa acuta (dextral) ... ... 25 



Pupa mttscoitini ... ... 25 



Purpura lapillus ... 1 01, 196 



Ti-itonofusus gracilis ... 100, 224 



Skye, Pisidiuiii lilljeborgi... ... 273 



Smith, E. A., and J. R. le B. Tom- 

 lin, Obituary Notice — Rev. R. 

 Boog Watson ... ... ... 139 



— Maxwell, Upon Certain Species 

 of Land Mollusca Living in 

 the Southern Limestone Alps • 120 



Solariella ottoi Phil, in the British 



Area ... .. ... ... 112 



page 

 Some Notes on the New British 

 Land Shell, Helicella heripen- 

 j/jMab., Rev. C. E.Y. Kendall 345 

 — • Remarks on the Determination 

 of Genera and Species, Lieut. - 

 Col. Godwin-Austen ... .., 144 



Southwold, Shells at 14 



Spence, G. C, Milax gagates at 



Eccles ... ... .. ... 45 



— 'i^oie on Helix potnatia ... 178 



— On the Dart of Helix tindata 

 Lowe 210 



— Scalariform i%/?jv: aJ/^/ja ... 311 

 Sphcerium coriieziin new to Mon- 

 mouth ... ... ... ... 64 



— lactistre new to Galway East... 318 



— — new to Queen's Co. ... 318 



— — new to Radnor... ... 350 



— pallidum new to Northants ... 350 

 Sphyradiuvi edentuluin and Pupa 



simplex Q)Ov\(!\^ ... ... ... 286 



Staffordshire, Limax teiielliis, etc. 42 



— Testacella in, J- R. B. Masefield 275 

 Stalley, IL J., The Dispersal of 



Shells by Insects ... ... 163 



Succinea elegans new to Orkney, J. 



R. le B; Tomlin ... ... 264 



— obloiiga in Merionethshire, J. E. 

 Cooper ... ... 148 



Suffolk East, Assemania grayaiia 14 

 Sussex East, New Records ... 350 



— — Vertigo antivertigo ... 342 



— West, £na moniana ... .. 342 



— — Paludestrina jenkitisi ... 68 



— — Planorbis vortex ... 318 



Taylor, J. W., Biology of the Mol- 

 lusca, Based chiefly upon a 

 Study of one of our Commonest 

 Species, Helix aspersa ... 265 



— Helicella caperata m. sinistror- 

 sum at Lewes... ... ... 45 



Testacella, Briti.sh Distrilnition of... 211 



— in Staffordshire, J. R. B. Mase- 

 field 275 



Thames, Pseiuianodonla elongata 



Hoi. in the, J. E. Cooper ... 138 

 Tipperary North, New Records ... 318 

 Tomlin, J. R. le B. , Descriptions of 

 Four Supposed New Land 

 Shells from British Somaliland ' 54 



