385 



page. 



Physa fontinalis , Down ill 



monstrosity ... ... ... 107 



— heterostropha, new to Britain ... 152 

 Pisidium milium, Somerset ... 276 

 Planorbis alius, Down ... ... m 



— carinalus, Down ... ... in 



— contortus, Down, Monaghan ... 11 1 

 m. distortum ... ... 237 



— spirorbis, abnormalities, Tenby 106 



cause of ... ... ... 216 



— - — Down and Kenmare ... in 



monstrosity ... ... ... 57 



scalariform ... ... 57, II0 



Plicatula squamosissima n.sp., fig. 



Natal 251 



Portrush, Helix acuta ... ... in 



Portstewart, Helix aculeata ... in 

 Poyard, C, Obituary notice of 



J. C. H. Crosse 212 



Psammobia ferroensis, Tenby .. 206 



Pupa anglica, Kenmare ... ... ill 



v. alba 152, 302 



— cylindracea, white form . . . 302 



— — Antrim and Galway ... in 

 v. curt a, Cavan ... ... 1 1 1 



— vniscorum, white form ... 302 



Donegal ... ... ... m 



Pyrgulina gliriella, type of Her- 



viera, n.g. ... ... ... 185 



Rathlin Island, Helix ericetorum 



vars. alba and hyalozonata ... in 



Rawson, Sir Rawson William ... 319 



Reeve, Lovell ... ... ... 344 



Rissoa, J. T. Marshall on ... 123 



— abyssicola ... ... ... 128 



— albella 130 



— calathus ... ... ... ... 125 



— cancellata ... ... ... 124 



— cimicoides ... ... ... 127 



— cingillus... ... ... ... 136 



— costata ... ... ... ... 1 28 



— costulata ... ... ... ... 132 



— fulgida ... ... ... ... 134 



— inconspicua v. ventrosa ... 129 

 — jeffreysi ... ... ... ... 127 



— lactea ... ... ... .. 124 



— membranacea ... ... ... 132 



— oblusa ... ... ... ... 135 



— parva ... ... ... ... 128 



— proxima ... ... ... ... 133 



— pukherrima ... ... ... 134 



sp. 



page. 

 Rissoa punctura ... ... ... 127 



— reticulata ... ... ... 126 



— semistiiata ... ... ... 135 



— striata ... ... ... ... 132 



— striatula... ... ... ... 124 



— subsohtta... ... ... ... 127 



— violacea ... ... ... ... 132 



— vitrea ... ... ... ... 134 



— zetlandica ... ... ... 128 



Rissoina (il/orc/iiella) thau?nasia n. 



sp., fig., Madras 

 Rossall, Helix virgata 

 Roxania, etymology 

 Sabanaa, etymology 

 Sandwich Flats, Petricola pholadi- 



formis ... 

 Sanguinolaria hendersoni n, 



fig., Madras 

 Scalaria clathratula 



— communis 

 — ■ decussata... 

 — fimbriolata, Persian Gulf 



— malcolmensis, Persian Gulf 



— pseudoscalaris ... 



— trevelyana 



— lurtonce ... 

 Scalariform examples : Helix 



aspe/sa ... 



hortensis 



nemoralis 



— Planorbis spirorbis 



— Strombus urceus 



— Valvata cristata 

 See also Subscalariform examples. 



Scintilla eddystonia = Diplodonta... 53 

 Sexual differences : Lacuna pallidula 74 



puteolus Turt. ... ... 73 



Singapore, Anomia enigmatica, at- 

 tached to mangrove leaf ... 146 

 Sinistral examples : Acicula lineata 239 



146 

 146 

 211 



193 

 265 

 265 

 19 

 145 

 376 

 238 

 123 



375 



3i 



150 



274 

 274 



243 



33 

 167 

 167 

 181 

 181 

 181 

 167 

 167 

 167 



i45> 193 

 ... 146 

 ... 265 



no 

 90 



109 



57, 



Buccimim undatum 



— Fusus antiquus 



— Helix acuta 



aspersa 



ericetorum 



nemoralis 



pisana 



— — pomatia 

 virgata 



— Limncea stagnalis 



— Littorina littorca 



— Melantho decisa 



19, 



74, 

 58, 



20, 



145, 



145, 



19, 

 199, 



