﻿ANNIVERSARY 
  ADDRESS 
  OF 
  THE 
  PRESIDENT. 
  

  

  97 
  

  

  Table 
  X. 
  — 
  Distribution 
  of 
  Genera 
  and 
  Species 
  in 
  the 
  Lincolnshire 
  

   Limestone 
  from 
  8 
  chief 
  localities, 
  and 
  the 
  Golly 
  weston 
  Slate 
  at 
  the 
  

   base. 
  

  

  Classes. 
  

  

  3 
  "<*> 
  

  

  te 
  

  

  

  Reptilia 
  

  

  Pisces 
  

  

  Ammonites 
  

  

  Nautili 
  

  

  Belemnites 
  

  

  Gasteropoda 
  

  

  Dimyaria 
  

  

  Monomyaria 
  

  

  Bracliiopoda 
  

  

  Bryozoa 
  

  

  Crustacea 
  none 
  

  

  Insecta 
  none 
  

  

  Annelida 
  

  

  Echinoidea 
  

  

  Crinoidea 
  

  

  Asteroidea 
  

  

  Actinozoa 
  

  

  Protozoa 
  

  

  Plantse 
  

  

  Careful 
  examination 
  of 
  this 
  Table 
  shows 
  the 
  extreme 
  pancity 
  of 
  the 
  

   Cephalopoda 
  in 
  the 
  Northamptonshire 
  and 
  Lincolnshire 
  deposits 
  as 
  

   compared 
  with 
  beds 
  of 
  the 
  same 
  age 
  in 
  Gloucestershire, 
  Dorsetshire, 
  

   and 
  Somersetshire, 
  or 
  the 
  south-west 
  of 
  England. 
  There 
  are 
  only 
  

   two 
  species 
  of 
  Nautilus, 
  JV. 
  obesus 
  and 
  N. 
  polygonalis, 
  and 
  two 
  species 
  

   of 
  Dibranchiata, 
  Belemnites 
  acutus 
  and 
  B. 
  bessinus 
  ; 
  and 
  the 
  latter 
  

   species 
  occurs 
  in 
  all 
  four 
  localities. 
  Still 
  more 
  striking 
  is 
  the 
  dearth 
  of 
  

   the 
  great 
  group 
  of 
  the 
  Ammonitidaa 
  ; 
  only 
  four 
  species 
  seem 
  to 
  occur, 
  

   and 
  these 
  in 
  one 
  locality 
  near 
  Stamford 
  : 
  they 
  are 
  Ammonites 
  Mur- 
  

   cliisonce, 
  A. 
  subradiatus, 
  A. 
  terebratus, 
  and 
  an 
  undescribed 
  species. 
  

   The 
  Gasteropoda, 
  with 
  very 
  few 
  exceptions, 
  are 
  also 
  different 
  from 
  

   any 
  of 
  the 
  southern 
  types, 
  and 
  differ 
  equally 
  from 
  most 
  of 
  the 
  York- 
  

   shire 
  forms, 
  the 
  Stibbington 
  fauna 
  mostly 
  resembling 
  the 
  Dogger 
  

  

  vol. 
  xxxviii. 
  i 
  

  

  