﻿COJJTENTS. 
  Vll 
  

  

  Papers 
  {continued) 
  — 
  • 
  page 
  

  

  Some 
  remarks 
  with 
  regard 
  to 
  Professor 
  Bourne's 
  monograph 
  on 
  

  

  the 
  Neritidfe. 
  Bj 
  Dr. 
  H. 
  Simroth. 
  (Figs.) 
  .... 
  27 
  

   Note 
  on 
  Sculptaria, 
  Pfeiffer. 
  By 
  J. 
  H. 
  Pons'ONBy, 
  F.Z.S. 
  . 
  . 
  34 
  

   Notes 
  on 
  the 
  genus 
  Libera. 
  By 
  J. 
  H. 
  Ponsonby, 
  F.Z.S. 
  . 
  . 
  37 
  

   A 
  further 
  note 
  on 
  the 
  anatomical 
  differences 
  between 
  the 
  genera 
  

  

  Ci/prcea 
  and 
  Trivia. 
  By 
  H. 
  O. 
  N. 
  Shaw, 
  F.Z.S. 
  ... 
  44 
  

   Notes 
  on 
  the 
  references 
  to 
  certain 
  groups, 
  etc., 
  used 
  in 
  the 
  

  

  classification 
  of 
  Molhisca. 
  By 
  H. 
  0. 
  N. 
  Shaw, 
  F.Z.S. 
  . 
  . 
  45 
  

   A 
  new 
  Mexican 
  genus 
  of 
  Pleuroceratida3. 
  By 
  Professor 
  H. 
  A. 
  

  

  PiLSBRY. 
  (Figs.) 
  47 
  

  

  Notes 
  on 
  a 
  small 
  collection 
  of 
  terrestrial 
  shells 
  from 
  Angola, 
  with 
  

  

  descriptions 
  of 
  new 
  species. 
  By 
  H. 
  B. 
  Preston, 
  F.Z.S. 
  

  

  (Figs.) 
  51 
  

  

  Notes 
  on 
  the 
  family 
  Ampullariida). 
  By 
  G. 
  B. 
  Sowerby, 
  F.L.S. 
  

  

  (Figs.) 
  56 
  

  

  Descriptions 
  of 
  new 
  species 
  of 
  Doiiovama, 
  Pisayiia, 
  Fhenacolepas, 
  

  

  and 
  Fissurella. 
  By 
  G. 
  B. 
  Sowerby, 
  F.L.S. 
  (Figs.) 
  . 
  . 
  65 
  

   On 
  Marine 
  Mollusca 
  from 
  the 
  Kermadec 
  Islands, 
  and 
  on 
  the 
  

  

  ' 
  Sinusigera 
  apex 
  '. 
  By 
  T. 
  Iredale 
  ..... 
  68 
  

  

  Notes 
  on 
  a 
  collection 
  of 
  Helicoid 
  Land 
  Shells 
  from 
  New 
  Guinea. 
  

  

  By 
  G. 
  K. 
  GuDE, 
  F.Z.S. 
  (Figs.) 
  80 
  

  

  Notes 
  on 
  Polyplacophora, 
  chiefly 
  Australasian. 
  Part 
  I. 
  By 
  

  

  T. 
  Iredale 
  90 
  

  

  On 
  Unio^ 
  Margaritana,Pseudanodonta, 
  and 
  their 
  occurrence 
  in 
  the 
  

  

  Thames 
  Valley. 
  By 
  Fritz 
  Haas 
  106 
  

  

  Description 
  of 
  Fmjoara 
  /r«^/Z/.'*, 
  n.sp., 
  from 
  Dutch 
  New 
  Guinea. 
  

  

  By 
  H. 
  B. 
  Preston, 
  F.Z.S. 
  (Fig.) 
  113 
  

  

  On 
  an 
  undescribed 
  Anodonta 
  from 
  the 
  English 
  Wealden 
  Formation, 
  

  

  with 
  remarks 
  on 
  the 
  other 
  Unionidte 
  of 
  the 
  same 
  period. 
  By 
  

  

  R. 
  B. 
  Newton, 
  F.G.S. 
  (Plate 
  I.) 
  114 
  

  

  Notes 
  on 
  (I) 
  Pleistocene, 
  (II) 
  Holocene, 
  (III) 
  Eecent 
  non-marine 
  

  

  Shells 
  from 
  Mallorca 
  ; 
  (IV) 
  Marine 
  Shells 
  associated 
  with 
  

  

  the 
  Holocene 
  deposits 
  ; 
  (V) 
  Marine 
  Shells 
  from 
  Alcudia, 
  

  

  Mallorca; 
  (VI) 
  Non-marine 
  Shells 
  from 
  Manresa, 
  Gataluna. 
  

  

  By 
  Rev. 
  R. 
  A. 
  Bdllen, 
  B.A., 
  F.L.S. 
  (Figs.) 
  . 
  . 
  . 
  118 
  

   On 
  the 
  occurrence 
  in 
  England 
  of 
  Valvata 
  macrostoona, 
  Steenhuch. 
  

  

  By 
  A. 
  S. 
  Kennard, 
  F.G.S. 
  , 
  and 
  A. 
  W. 
  Stelfox 
  . 
  . 
  . 
  123 
  

   Description 
  of 
  a 
  new 
  species 
  of 
  IMicodonta 
  from 
  Spain. 
  By 
  G. 
  K. 
  

  

  GuDE, 
  F.Z.S. 
  (Fig.) 
  124 
  

  

  The 
  Distribution 
  oi 
  Margaritana 
  margaritifera 
  (Linn.) 
  in 
  North 
  

  

  America. 
  By 
  Bryant 
  Walker. 
  (Plate 
  II.) 
  . 
  . 
  . 
  126 
  

  

  Description 
  of 
  a 
  new 
  species 
  of 
  Voluta 
  from 
  West 
  Australia,. 
  ]5y 
  

  

  Dr. 
  J. 
  C. 
  Cox. 
  (Plate 
  IIL) 
  146 
  

  

  