﻿Geohgical 
  Society, 
  COS 
  

  

  Ptjrptjea 
  of 
  Adanson, 
  ^^^'e-Linnean, 
  

  

  = 
  Bruguiere, 
  1789. 
  

   Triton, 
  Montfort, 
  1810, 
  non 
  Linnrous 
  (Cirripedia), 
  

  

  = 
  LAMPUSIA, 
  Schumacher, 
  1817. 
  

   Meyeeia, 
  Dunker 
  & 
  Metzger, 
  1878, 
  yion 
  M'Goy 
  (Crustacea), 
  

   1849. 
  

   = 
  METZGERIA, 
  Norman, 
  1879. 
  

   SiPHO, 
  Klein, 
  pre-Linnean, 
  adopted 
  bv 
  Morch 
  in 
  1852. 
  

  

  = 
  TKITONOFUSUS, 
  Beck, 
  1847, 
  see 
  Harris, 
  Cat. 
  Austra- 
  

   lasian 
  Tertiary 
  Mollusca, 
  British 
  Museum, 
  1897. 
  

   The 
  work 
  will 
  be 
  of 
  great 
  service 
  to 
  the 
  student 
  on 
  account 
  of 
  

   the 
  beautiful 
  plates 
  which 
  illustrate 
  the 
  different 
  species. 
  Recent 
  

   and 
  fossil 
  forms 
  are 
  placed 
  side 
  by 
  side, 
  so 
  that 
  comparisons 
  are 
  

   easily 
  followed 
  out. 
  This 
  is 
  only 
  the 
  first 
  portion, 
  running 
  to 
  

   200 
  pages 
  and 
  24 
  plates, 
  containing 
  the 
  non-marine 
  shells 
  and 
  

   marine 
  Gastropoda 
  — 
  we 
  shall 
  look 
  forward 
  with 
  interest 
  to 
  

   succeeding 
  parts 
  of 
  so 
  important 
  a 
  guide 
  to 
  the 
  Crag 
  Mollusca 
  of 
  

   this 
  country. 
  

  

  PROCEEDINGS 
  OF 
  LEARNED 
  SOCIETIES. 
  

   GE0L0C4ICAL 
  SOCIETY. 
  

  

  February 
  4th, 
  1914. 
  — 
  Dr. 
  Aubrey 
  Strahan, 
  F.R.S., 
  President, 
  

   in 
  the 
  Chair. 
  

  

  The 
  following 
  communication 
  was 
  read 
  : 
  — 
  

  

  ' 
  On 
  the 
  Occurrence 
  of 
  a 
  Giant 
  Dragon-Fly 
  in 
  the 
  Eadstock 
  

   Coal 
  Measures.' 
  By 
  Herbert 
  Bolton, 
  M.Sc, 
  'F.R.S.E., 
  F.G.S., 
  

   Reader 
  in 
  Palaeontology 
  in 
  the 
  University 
  of 
  Bristol. 
  

  

  The 
  writer 
  describes 
  the 
  structure 
  of 
  a 
  vdng-fragment 
  found 
  

   some 
  years 
  ago 
  upon 
  the 
  Tyning 
  waste-heap 
  at 
  Radstock 
  Colliery 
  

   (Somerset) 
  by 
  Dr. 
  E. 
  A. 
  Newell 
  Arber, 
  F.G.S. 
  

  

  The 
  fragment 
  consists 
  of 
  the 
  proximal 
  third 
  of 
  a 
  left 
  fore-wing. 
  

   It 
  is 
  remarkable 
  for 
  its 
  size, 
  being 
  64 
  mm. 
  long 
  and 
  40 
  mm. 
  broad, 
  

   the 
  complete 
  wing 
  having 
  an 
  estimated 
  length 
  of 
  190 
  mm., 
  or 
  7-5 
  

   inches 
  ; 
  the 
  whole 
  insect 
  (with 
  wings 
  extended) 
  must 
  have 
  had 
  a 
  

   span 
  of 
  over 
  400 
  mm., 
  or 
  16 
  inches. 
  

  

  The 
  anterior 
  wing-margin 
  is 
  strongly 
  tubercidated 
  proximally, 
  

   and 
  more 
  distally 
  bears 
  a 
  closely-set 
  series 
  of 
  pointed 
  spines 
  directed 
  

   outwards 
  towards 
  the 
  wing-apex. 
  The 
  hinder 
  wing-margin 
  is 
  also 
  

   spinous, 
  the 
  spines 
  being 
  a 
  little 
  way 
  inwards 
  from 
  the 
  edge, 
  and 
  

   possibly 
  serving 
  to 
  interlock 
  the 
  fore 
  and 
  hind 
  wings 
  during 
  flight. 
  

   The 
  radial 
  and 
  median 
  veins 
  are 
  missing, 
  but 
  the 
  characters 
  of 
  the 
  

   costa 
  and 
  subcosta 
  on 
  the 
  anterior 
  portion 
  of 
  the 
  wing, 
  and 
  of 
  the 
  

   cubital 
  and 
  anal 
  veins 
  on 
  the 
  hinder 
  part, 
  show 
  cleai-ly 
  the 
  close 
  

   relationship 
  of 
  the 
  insect 
  to 
  the 
  members 
  of 
  the 
  family 
  Mega- 
  

   neuridse, 
  a 
  group 
  including 
  the 
  enormous 
  Meganeura 
  monyi 
  

   Brongniart, 
  from 
  the 
  Stephanian 
  of 
  Commentiy 
  (AUier). 
  The 
  

   wing 
  is 
  refeiTed 
  to 
  the 
  genus 
  Meganeura 
  as 
  a 
  new 
  species. 
  The 
  

   precise 
  horizon 
  from 
  which 
  the 
  shale 
  was 
  derived 
  cannot 
  be 
  deter- 
  

   mined, 
  as 
  the 
  Tyning 
  waste-heap 
  has 
  received 
  material 
  from 
  five 
  

   different 
  collieries. 
  

  

  