﻿SUBDIVISIONS 
  OF 
  THE 
  SPEETON 
  CLAY. 
  617 
  

  

  " 
  Meyeria 
  falcifeea, 
  Phil. 
  MS. 
  

  

  " 
  Syn. 
  Astacodes 
  falcifer, 
  Bell. 
  

  

  " 
  This 
  species 
  has 
  given 
  me 
  much 
  difficulty. 
  Your 
  specimens, 
  as 
  

   also 
  those 
  in 
  the 
  York 
  Museum, 
  offer 
  characters 
  which 
  agree 
  with 
  

   those 
  of 
  Meyeria 
  so 
  precisely 
  that 
  I 
  propose 
  to 
  retain 
  the 
  generic 
  

   name 
  given 
  by 
  Phillips. 
  Bell 
  has 
  assigned 
  to 
  it 
  (Pal. 
  Soc. 
  Mem.) 
  

   an 
  abdomen 
  which 
  does 
  not 
  belong 
  to 
  it, 
  but 
  to 
  a 
  totally 
  distinct 
  

   crustacean 
  his 
  description 
  needs 
  very 
  considerable 
  recon- 
  

   struction 
  and 
  correction. 
  

  

  " 
  HoPLOPARIA 
  PRISMATICA, 
  M 
  c 
  Coy. 
  

  

  " 
  I 
  have 
  compared 
  your 
  example 
  with 
  M 
  c 
  Coy's 
  type 
  specimens 
  in 
  

   the 
  Woodwardian 
  Museum, 
  which 
  are 
  very 
  good 
  ones 
  and 
  are 
  from 
  

   Speeton. 
  This 
  species 
  varies 
  a 
  good 
  deal 
  both 
  in 
  size 
  and 
  in 
  degree 
  

   of 
  development 
  of 
  several 
  of 
  the 
  characters. 
  

  

  " 
  Palenttkidia 
  scarburgensis, 
  Carter, 
  MS. 
  

  

  " 
  The 
  specimen 
  which 
  I 
  named 
  a 
  year 
  or 
  so 
  ago 
  is 
  in 
  the 
  Scar- 
  

   borough 
  Museum, 
  and 
  a 
  fragment 
  of 
  the 
  same 
  species 
  is 
  in 
  the 
  York 
  

   Museum. 
  I 
  hope 
  shortly 
  to 
  describe 
  and 
  figure 
  it, 
  but 
  may 
  have 
  

   occasion 
  to 
  alter 
  the 
  uame, 
  as 
  I 
  have 
  an 
  idea 
  that 
  the 
  name 
  of 
  the 
  

   genus 
  is 
  already 
  employed." 
  

  

  Discussion. 
  

  

  Prof. 
  Jijdd 
  congratulated 
  Mr. 
  Lamplugh 
  upon 
  the 
  important 
  work 
  

   he 
  had 
  accomplished. 
  During 
  his 
  own 
  frequent 
  journeys 
  to 
  the 
  

   coast 
  he 
  had 
  seldom 
  found 
  the 
  beds 
  exposed 
  on 
  the 
  shore, 
  whilst 
  

   the 
  Author, 
  by 
  visiting 
  the 
  section 
  in 
  winter, 
  had 
  been 
  able 
  to 
  

   make 
  some 
  interesting 
  discoveries. 
  He 
  himself 
  had 
  mainly 
  worked 
  

   the 
  cliff, 
  Mr. 
  Lamplugh 
  the 
  shore. 
  He 
  had 
  adopted 
  Ammonites, 
  

   Mr. 
  Lamplugh 
  Belemnites, 
  as 
  the 
  basis 
  of 
  classification 
  ; 
  nor 
  had 
  he 
  

   acted 
  at 
  hazard 
  in 
  rejecting 
  the 
  latter, 
  since 
  in 
  studying 
  the 
  Neo- 
  

   comian 
  elsewhere 
  he 
  had 
  found 
  correlation 
  by 
  means 
  of 
  Ammonites 
  

   more 
  satisfactory. 
  He 
  especially 
  congratulated 
  the 
  Author 
  on 
  the 
  

   light 
  he 
  had 
  thrown 
  upon 
  the 
  top 
  and 
  bottom 
  of 
  the 
  section 
  ; 
  at 
  

   the 
  top 
  of 
  the 
  bottom 
  section 
  neither 
  Mr. 
  Leckenby 
  nor 
  he 
  had 
  

   any 
  suspicion 
  that 
  there 
  was 
  any 
  second 
  coprolite-bed. 
  As 
  regards 
  

   the 
  top 
  of 
  the 
  section 
  the 
  presence 
  of 
  Lower-Gault 
  fossils 
  was 
  very 
  

   interesting. 
  

  

  Mr. 
  Sxeahan 
  stated 
  his 
  belief 
  that 
  the 
  existence 
  of 
  a 
  partial 
  

   barrier 
  between 
  the 
  Lincolnshire 
  and 
  Yorkshire 
  areas 
  is 
  indicated 
  

   long 
  before 
  the 
  Kimeridge-Clay 
  period, 
  For 
  nearly 
  all 
  the 
  Secondary 
  

   rocks, 
  up 
  to 
  the 
  Chalk, 
  tended 
  to 
  thin 
  away 
  in 
  the 
  ground 
  separating 
  

   the 
  two 
  areas. 
  It 
  was 
  interesting 
  to 
  find 
  a 
  passage 
  up 
  from 
  the 
  

   Neocomian 
  strata 
  into 
  the 
  Red 
  Chalk 
  in 
  Yorkshire 
  as 
  well 
  as 
  in 
  

   Lincolnshire. 
  

  

  Prof. 
  Blake 
  alluded 
  to 
  the 
  confusion 
  in 
  the 
  Speeton 
  Clay. 
  He 
  

   considered 
  the 
  coprolite-bed 
  of 
  importance 
  as 
  containing 
  remanie 
  

   Portlandian 
  fossils. 
  It 
  was 
  difficult 
  to 
  believe 
  there 
  was 
  no 
  un- 
  

  

  