INDEX TO VOL. IV. 



ORIGINAL ARTICLES. 



PAGE. 

 Abnormal Spiral banding in our Land and Freshwater Mollusca — 



S. C. Cockerell ... ... ... ... ... 374 



Anodon herculeus, Note on — E. A. Smith ... ... ... 366 



Ancylus lacustris V. albida at Christchurch — C. Ashford ... ... 13 



,, ,, a thread spinner — J.W.Taylor... ... 127 



,, fluviatilis v. costata — T. D, A. Cockerell... ... ... 376 



Additional Captures from Preston Candover — H. P. Fitzgerald ... 337 



Anodon herculeus, Note on — R. D. Darbishire ... ... ... 337 



Alteration in the Molkiscan fauna of a small pond — W. Nelson ... 117 

 Authenticated materials for a list of the Land and Freshwater Mollusca 



of Mid- West Yorkshire ... ... ... ... 188 



Authenticated List of the Mollusca of Northamptonshire ... ... 247 



Astarte borealis, Note on — R. D. Darbishire ... ... ... 270 



Arion ater V. plumbea — W. Denison Roebuck ... ... ... 146 



,, ,, v.bicolor in West Gloucester — W. Denison Roebuck, F.L.S. 217 



,, ,, V. albolateralis in Sussex — J.W.Taylor ... ... 224 



Acme lineata in North Somerset — ^J. W. Cundall ... ... ... 194 



Anatomy of Helix sericea. Note on — C. Ashford ... ... ... 259 



British Slug List — W. Denison Roebuck... ... ... ... 38 



Bulimus obscurus V. albinos —J. W. Taylor ... ... ... 83 



,, ,, ,, — W. Denison Roebuck ... ... 117 



Bulimus acutus v. elongata in England — ^J. W. Taylor ... ... 216 



Conchological Society's list of British Land and Freshwater Mollusca 45 



Circe versus Gouldia — W. H. Dall ... .. ... ... 60 



Carnarvonshire Mollusca, Notes on — W. Denison Roebuck ... 113 



Cyclostoma elegans V. fasciata in England — J. W. Taylor ... ... 158 



Colonizing Land Shells in East Sutherlandshire — W. Baillie ... I60 



Colonization of Land Shells at Chislehurst — T. D. A. Cockerell ... 238 



Clausilia rugosa v. albinos in South Hants— J. W. Taylor ... ... 224 



,, ,, m. dextrorsum — J. W. Taylor ... ... ... 265 



Census of the Authenticated Distribution of British Land and Fresh- 

 water Mollusca — J. W. Taylor and W. Denison Roebuck... 319 

 Descriptions of new British varieties of freshwater shells — W. Nelson 25 

 Description of a new variety of Limax agrestis — J. D. Butterell ... 27 

 Descriptions of some new varieties of British Land and Freshwater 



shells— J. W. Taylor... ... ... ... ... 28 



Description of a new species of Cassis — J. C. Melvill ... ... 43 



Descriptions of some new varieties of British land shells — J. W.Taylor 53 



Descriptions of new Tasmanian Marine Shells — W. F. Petterd ... 135 



Descriptions of two new species of shells — ^J C. Melvill ... ... 316 



Description of anew species of Planorbis from Manitoba- — J.W.Taylor 351 

 Description of new varieties of Limax arborum and Arion ater — 



W. Denison Roebuck ... ... ... ... 375 



Distribution of the Land and Freshwater Mollusca in Britain — Present 



state of knowledge ... ... ... .. ... 174 



Darts of British Helicidse — Chas. Ashford 69, 108, 129, 164, 194, 239, 267 



Eulima Candida, Note on — E. A, Smith ... ... ... ... 282 



