PAGE. 



Parasite of Limnjea truncatula — J. T. Marshall ... ... ... lo 



Pupa secale v. alba — W. Denison Roebuck ... ... ... 12 



,, ,, V. edentula — J. W. Taylor ... ... ... ... 68 



,, ,, V. minor in Britain — J. W, Taylor ... ... ... 205 



Pupa marginata V. albina — J. W. Taylor... ... ... ... 44 



,, ,, V. brevis in Britain — J.W.Taylor ... ... 376 



Pupa umbilicata Drap. — J. W. Taylor ... ... ... ... 13 



,, ,, V. albina at Christchurch, South Hants — J-H-Ashford 312 



Pupa ringens in Sutherlandshire — J. VV. Taylor ... ... ... 24 



Planorbis lineatus, new Yorkshire locality — W. Denison Roebuck ... 13 



,, ,, Septa of— J. W. Taylor ... ... ... 37 



Planorbis corneus v. albinos in Warwickshire — J. W. Taylor ... 228 



Planorbis dilatatus as a British species — E.Collier... ... ... 217 



Planorbis complanatus m. terebrum -J. W. Taylor ... ... 128 



Planorbis contortus, Variation in Coloration of theanimal — W. Nelson 128 



,, ,, V. albida at York — J. VV. Taylor ... ... 224 



Planorbis subangulatus at Malta — T. D. A. Cockerell ... ... 366 



Physa fontinalis V. albinos — J. W. Taylor ... ... ... 84 



Paludina vivipara V. unicolor — ^J. W. Taylor ... ... ... 127 



,, ,, Note on the range of — J. W. Taylor ... ... I16 



Paludina contecta in Yorkshire — W. Nelson ... ... ... 214 



Pulsations of Helix rufescens — C. Ashford ... ... ... 13 



Preparation of the smaller bivalves for the Cabinet — W. Jefifery ... 303 



Slime spinning of Arion hortensis — W. Denison Roebuck ... ... 82 



Subfossil Shell deposits in Nottinghamshire — C. T. Musson ... 161 



Testacella haliotidea V. scutulum — T. S. Hillman ... ... ... 11$ 



Unio pictorum in Nottinghamshire — J.W.Taylor... ... ... 224 



Vitrina pellucida v. depressiuscula — J. W. Taylor... ... ... 80 



Yalvata piscinalis m. sinistrorsum in Derbyshire — J. W. Taylor ... 145 



,, ,, V. albina in England — J.W.Taylor ... ... 173 



Variation in Lehmannia arborum—W. Denison Roebuck ... ... 276 



Zonites glaber as a member of the British Fauna — J. W. Taylor ... 81 



Zonites radiatulus v. viridescenti-alba in Yorkshire — W. Nelson ... 223 



Zonites nitidulus v. Helmii in South Tipperary — J, W. Taylor ... 352 



LIST OF SPECIES AND VARIETIES NEW TO 

 SCIENCE. 



Ancylus assimilis, Petterd ... ... ... ... ••• 1,59 



Arion ater v. albolateralis, Roebuck ... ... ... ... 39 



,, ,, V. albida, Roebuck ... ... ... .•• ... 40 



,, ,, V. plumbea, Roebuck ... ... ..• ... 146 



,, ,, V. reticulata, Roebuck ... ... ... ... 375 



Amnicola positura, Petterd ... ... ... ... ... 159 



Aclis micra, Petterd ... ... ... ... ■.■ ... 136 



Aclis turrita, Petterd ... ... ... ... ... ... 140 



Bulimus acutus v. nigrescens, Taylor ... ... ... ... 32 



Bithynia richmondiana, Petterd ... ... ... ... 159 



Bullia pura, Melvill ... ... ... ... ... ... 316 



Clausilia rolphii v. pellucida, Taylor ... ' ... ... ... 32 



dementia tasmanica, Petterd ... ... ... ... ... 145 



Cassis kalosmodix, Melvill ... ... ... ... ... 43 



Cerithiopsis johnstoni, Petterd ... ... ... ... ... 142 



Chemnitzia beddomei, Petterd ... ... ... ... ... 136 



