﻿396 
  PROCEEDINGS 
  OP 
  THE 
  GEOLOGICAL 
  SOCIETY. 
  [June 
  8, 
  

  

  tioned 
  as 
  the 
  "Dioplodon 
  of 
  Hemixem" 
  in 
  a 
  notice 
  published 
  by 
  M. 
  

   Yan 
  Beneden 
  in 
  the 
  tenth 
  volume 
  of 
  the 
  second 
  series 
  of 
  the 
  ' 
  Bul- 
  

   letin.' 
  On 
  referring 
  to 
  the 
  page 
  of 
  that 
  volume 
  cited, 
  I 
  find, 
  unfortu- 
  

   nately, 
  no 
  statement 
  of 
  the 
  distinctive 
  characters 
  of 
  the 
  Zvphirostrum 
  ; 
  

   and 
  the 
  description 
  of 
  Placocetus 
  also 
  is 
  not 
  yet 
  published. 
  

  

  EXPLANATION 
  OF 
  PLATE 
  XIX 
  

  

  Rostrum 
  of 
  Bclemnoziphhis 
  compressus, 
  one-third 
  the 
  natural 
  size, 
  viewed 
  — 
  A, 
  

   laterally 
  ; 
  B, 
  from 
  below 
  ; 
  C, 
  from 
  above 
  ; 
  D, 
  the 
  anterior 
  fractured 
  end. 
  

  

  June 
  8, 
  1864. 
  

  

  Christopher 
  Oakley, 
  Esq., 
  10 
  Waterloo 
  Place, 
  Pall 
  Mall, 
  S.W. 
  ; 
  

   George 
  Edward 
  Roberts, 
  Esq., 
  Geological 
  Society, 
  Somerset 
  House, 
  

   W.C., 
  and 
  7 
  Caversham 
  Road 
  Villas, 
  N.W. 
  ; 
  and 
  The 
  Rev. 
  Henry 
  

   W. 
  Watson, 
  M.A., 
  Harrow, 
  were 
  elected 
  Eellows. 
  

  

  The 
  following 
  communications 
  were 
  read 
  : 
  — 
  

  

  1. 
  On 
  the 
  Rbletic 
  Beds 
  and 
  White 
  Lias 
  of 
  Western 
  and 
  Central 
  

   Somerset 
  ; 
  and 
  on 
  the 
  Discovery 
  of 
  a 
  new 
  Eossil 
  Mammal 
  in 
  the 
  

   Grey 
  Marlstones 
  beneath 
  the 
  Bone-bed. 
  By 
  W. 
  Boyd 
  Dawkins, 
  

   Esq., 
  B.A. 
  (Oxon), 
  F.G.S., 
  of 
  the 
  Geological 
  Survey 
  of 
  Great 
  

   Britain. 
  

  

  Contents. 
  

   Part 
  I. 
  On 
  the 
  Rhajtic 
  Beds 
  and 
  White 
  Lias 
  of 
  Western 
  and 
  Central 
  Somerset. 
  

   I. 
  Introduction. 
  

   II. 
  Description 
  of 
  the 
  Sections. 
  

  

  1. 
  West 
  of 
  Watchet. 
  

  

  2. 
  East 
  of 
  Watchet. 
  

  

  3. 
  From 
  the 
  Coast 
  to 
  the 
  River 
  Parrett. 
  

  

  4. 
  The 
  Outliers 
  of 
  Wedmore 
  and 
  Pen 
  Knowle. 
  

  

  5. 
  The 
  Poulden 
  Hills, 
  Turn 
  Hill, 
  Langport 
  Hatch, 
  &c. 
  

  

  6. 
  Summary 
  of 
  the 
  Sections. 
  Conditions 
  of 
  Deposit. 
  

  

  III. 
  Palaeontology. 
  

  

  1. 
  Tabular 
  List 
  of 
  Fossils, 
  showing 
  their 
  range. 
  

  

  2. 
  Palajontological 
  Relations 
  of 
  the 
  White 
  Lias 
  to 
  the 
  Ammonites 
  planor- 
  

  

  bis 
  Rocks 
  and 
  to 
  the 
  Rhaetic 
  Beds.' 
  

  

  3. 
  Range 
  of 
  Fossils 
  in 
  the 
  Rhcetic 
  Beds. 
  

  

  IV. 
  Lower 
  Boundary 
  of 
  the 
  Rhcetic 
  Formation. 
  

  

  V. 
  Thickness 
  of 
  the 
  Rhsetic 
  Beds 
  and 
  White 
  Lias. 
  

   VI. 
  Summary. 
  

  

  Part 
  II. 
  On 
  the 
  Discovery 
  of 
  a 
  New 
  Fossil 
  Mammal 
  in 
  the 
  Grey 
  Marlstones 
  

   beneath 
  the 
  Bone-bed. 
  

   I. 
  Introduction. 
  IV. 
  Determination. 
  

  

  II. 
  Position 
  of 
  the 
  Fossil. 
  V. 
  Range 
  of 
  Marsupials 
  in 
  Time. 
  

  

  III. 
  Description. 
  

  

  Part 
  I. 
  On 
  the 
  Rh-etic 
  Beds 
  and 
  White 
  Lias 
  of 
  Western 
  and 
  

   Central 
  Somerset. 
  

  

  § 
  I. 
  Introduction. 
  

   In 
  the 
  year 
  1861 
  I 
  spent 
  some 
  time 
  in 
  examining 
  the 
  interval 
  

   between 
  the 
  Red 
  Marls 
  and 
  the 
  Upper 
  Lias 
  in 
  Central 
  and 
  Western 
  

  

  