﻿ANNIVERSARY 
  ADDRESS 
  OF 
  THE 
  PRESIDENT. 
  1 
  55 
  

  

  Cleveland 
  area. 
  They 
  are 
  distributed 
  through 
  about 
  1300 
  feet 
  of 
  

   strata*. 
  

  

  The 
  Monomyarian 
  fauna 
  of 
  the 
  Lias 
  of 
  other 
  typical 
  localities 
  

   varies 
  much 
  in 
  number 
  of 
  species. 
  That 
  of 
  the 
  zone 
  of 
  JEgoceras 
  

   planorbis, 
  in 
  Britain, 
  seldom 
  exceeds 
  6 
  or 
  8 
  species 
  ; 
  on 
  the 
  con- 
  

   tinent, 
  at 
  Halberstadt, 
  Wiirttemberg, 
  in 
  Swabia, 
  the 
  Cote 
  d'Or, 
  &c, 
  

   it 
  is 
  extensively 
  developed 
  and 
  rich 
  in 
  species. 
  

  

  The 
  zone 
  of 
  Arietites 
  Buclclandi 
  at 
  Saltford, 
  near 
  Bristol, 
  at 
  Lyme 
  

   Eegis, 
  near 
  Watchett, 
  in 
  the 
  Harbury 
  beds, 
  at 
  Penarth 
  Head, 
  and 
  

   in 
  Lincolnshire 
  gives 
  much 
  the 
  same 
  general 
  result 
  in 
  collecting 
  

   as 
  that 
  of 
  Yorkshire, 
  namely, 
  about 
  10 
  genera 
  and 
  from 
  18 
  to 
  20 
  

   species. 
  The 
  French 
  deposits 
  in 
  the 
  Cote 
  d'Or 
  also 
  yield 
  almost 
  the 
  

   same 
  species 
  and 
  percentage. 
  

  

  The 
  beds 
  with 
  JEgoceras 
  Jamesoni, 
  near 
  Cheltenham, 
  have 
  yielded 
  

   6 
  genera 
  and 
  13 
  species. 
  

  

  Penny 
  Compton, 
  in 
  Warwickshire, 
  has 
  a 
  very 
  large 
  fauna, 
  12 
  genera 
  

   and 
  28 
  species 
  of 
  the 
  Monomyaria 
  ; 
  but 
  this 
  fine 
  section 
  has 
  yielded 
  

   no 
  less 
  than 
  206 
  species 
  in 
  all 
  groups. 
  This 
  is 
  due 
  to 
  the 
  careful 
  

   collecting 
  and 
  critical 
  knowledge 
  of 
  Mr. 
  Beesley, 
  of 
  Banbury. 
  The 
  

   same 
  zone 
  at 
  Badstock 
  yields 
  15 
  species 
  ; 
  and 
  its 
  extended 
  range 
  to 
  

   Scotland 
  (Pabba, 
  Skye, 
  and 
  the 
  Hebrides) 
  13 
  species, 
  and 
  in 
  almost 
  

   every 
  instance 
  the 
  same. 
  

  

  The 
  JEgoceras-Henleyi 
  beds 
  at 
  Mickleton, 
  Lyme 
  Eegis, 
  Charmouth, 
  

   Cheltenham, 
  &c. 
  furnish 
  about 
  the 
  same 
  number. 
  The 
  Amaltheus- 
  

   margaritatus 
  beds 
  in 
  Gloucestershire, 
  Dorsetshire, 
  and 
  Somersetshire, 
  

   and 
  in 
  the 
  islands 
  of 
  Baasay 
  and 
  Skye, 
  are 
  the 
  same, 
  species 
  for 
  

   species. 
  The 
  succeeding 
  Amalilieus-spinatus 
  beds 
  in 
  Gloucestershire, 
  

   Dorsetshire, 
  and 
  Skye 
  give 
  the 
  same 
  result. 
  This 
  zone, 
  in 
  its 
  several 
  

   localities, 
  varies 
  but 
  little 
  ; 
  the 
  same 
  genera 
  and 
  species 
  occur 
  

   everywhere. 
  

  

  The 
  well-known 
  beds 
  containing 
  Ilarpoceras 
  bifrons, 
  StepJiano- 
  

   ceras 
  commune, 
  and 
  S. 
  crassum, 
  which 
  range 
  from. 
  Whitby 
  to 
  Somer- 
  

   setshire, 
  under 
  many 
  lithological 
  aspects, 
  have 
  yielded 
  to 
  Mr. 
  Beesley, 
  

   from 
  the 
  eastern 
  portion 
  of 
  the 
  Banbury 
  and 
  Cheltenham 
  railway 
  at 
  

   Bloxham, 
  in 
  Oxfordshire, 
  a 
  rich 
  series 
  of 
  organic 
  remains 
  ; 
  amongst 
  

   them 
  the 
  Mollusca 
  are 
  very 
  numerous. 
  No 
  less 
  than 
  22 
  species 
  of 
  

   Cephalopoda 
  occur 
  (12 
  Ammonites, 
  8 
  Belemnites, 
  and 
  2 
  Nautili). 
  Of 
  

   Gasteropoda 
  10 
  genera 
  and 
  12 
  species 
  ; 
  Lamellibranchiata 
  18 
  genera 
  

   and 
  25 
  species 
  ; 
  Brachiopoda 
  4 
  genera 
  and 
  7 
  species 
  ; 
  Annelida 
  

   1 
  genus 
  and 
  6 
  species 
  ; 
  Echinodermata 
  4 
  genera 
  and 
  4 
  species 
  : 
  

   Crustacea 
  2 
  species 
  ; 
  and 
  Ehizopoda 
  (Foraminifera) 
  8 
  genera 
  and 
  

   24 
  species 
  ; 
  in 
  all 
  50 
  genera 
  and 
  102 
  species. 
  Amongst 
  the 
  Ammo- 
  

   nites 
  in 
  this 
  section 
  occur 
  Lytoceras 
  cornucopia? 
  and 
  Phylloceras 
  

   heterophylhtm, 
  the 
  latter 
  species 
  being 
  by 
  no 
  means 
  common 
  in 
  the 
  

   south 
  and 
  west 
  of 
  England. 
  

  

  * 
  Vide 
  Tate 
  & 
  Blake, 
  ' 
  Yorkshire 
  Lias,' 
  pp. 
  193-197, 
  and 
  passim. 
  

  

  