﻿76 
  PKOCEEDINGS 
  OF 
  THE 
  GEOLOGICAL 
  SOCIETY. 
  

  

  stone 
  and 
  shale, 
  being 
  crowded 
  with 
  Gryphcea 
  arcuata 
  (incurva) 
  

   and 
  abounding 
  in 
  Lima 
  gigantea, 
  with 
  Ammonites 
  of 
  the 
  group 
  of 
  the 
  

   Arietes, 
  cannot 
  fail 
  to 
  show 
  that 
  they 
  are 
  the 
  well-known 
  Lima 
  or 
  

   Bucklandi 
  beds 
  of 
  the 
  south 
  (loc. 
  cit. 
  p. 
  701). 
  

  

  Besides 
  the 
  above-named 
  fossils, 
  Am. 
  Bucklandi, 
  A. 
  Conybeari, 
  

   A. 
  Kriclion, 
  Nautilus 
  striatus, 
  Pinna 
  Hartmanni, 
  Lima 
  pectinoides, 
  

   Spirifera 
  Walcotti, 
  &c. 
  tend 
  to 
  correlate 
  these 
  beds 
  with 
  the 
  

   well-known 
  deposits 
  of 
  England, 
  Burgundy, 
  and 
  Wiirttemberg. 
  At 
  

   Applecross 
  Mr. 
  Judd 
  obtained, 
  besides 
  the 
  above, 
  Modiola 
  psilonoti, 
  

   Avicula 
  sinemuriensis, 
  Pecten 
  tecctorius, 
  Unicardium 
  cardioides, 
  Car- 
  

   dinia 
  Listeri, 
  C. 
  crassiuscula, 
  Astarte 
  dentilabrum, 
  and 
  Pentacrini. 
  

   All 
  the 
  same 
  species 
  occur 
  on 
  the 
  shore 
  at 
  Broadford 
  Bay, 
  Skye. 
  

   A 
  little 
  higher 
  in 
  the 
  section 
  occurs 
  Am. 
  semicostatus 
  and 
  A. 
  Sau- 
  

   zeanus, 
  the 
  more 
  typical 
  Bucklandi 
  forms 
  having 
  disappeared. 
  

   Mr. 
  Judd 
  says 
  that 
  nowhere 
  in 
  the 
  Western 
  Highlands 
  can 
  the 
  Lower 
  

   Lias 
  be 
  studied 
  to 
  greater 
  advantage 
  than 
  on 
  the 
  shores 
  of 
  Loch 
  

   Aline, 
  on 
  the 
  eastern 
  side 
  of 
  the 
  Sound 
  of 
  Mull 
  ; 
  18 
  genera 
  and 
  30 
  

   species 
  have 
  been 
  found 
  there. 
  Numerically 
  they 
  are 
  as 
  follows 
  : 
  — 
  

  

  Ichthyosaurus 
  vertebrae. 
  

  

  Ammonites 
  1 
  genus 
  and 
  7 
  species. 
  

  

  Nautilus 
  1 
  „ 
  1 
  

  

  Gasteropoda 
  1 
  ,, 
  1 
  

  

  Dimyaria 
  4 
  ,, 
  5 
  

  

  Monomyaria 
  6 
  „ 
  11 
  

  

  Annelida 
  1 
  „ 
  1 
  

  

  Echinoidea 
  1 
  „ 
  1 
  

  

  Crinoidea 
  1 
  „ 
  2 
  

  

  Plantse 
  1 
  ,, 
  1 
  

  

  18 
  30 
  

  

  It 
  will 
  be 
  perceived 
  that 
  the 
  Ammonites 
  and 
  Bivalves 
  constitute 
  

   the 
  chief 
  mass 
  of 
  the 
  species. 
  Only 
  one 
  Gasteropod, 
  and 
  that 
  a 
  doubtful 
  

   PTiasianella, 
  occurs 
  here. 
  

  

  The 
  Middle 
  Lias. 
  — 
  The 
  two 
  well-marked 
  members 
  of 
  this 
  divi- 
  

   sion 
  are 
  the 
  lowest 
  or 
  "Pabba 
  series 
  " 
  and 
  the 
  upper 
  or 
  u 
  Scalpa 
  

   series." 
  The 
  former 
  consists 
  of 
  sandy 
  shales 
  ; 
  the 
  latter 
  of 
  a 
  great 
  

   thickness 
  of 
  calcareous 
  sandstones. 
  Each 
  of 
  these 
  divisions 
  contains 
  

   a 
  distinctive 
  fauna 
  ; 
  the 
  Pabba 
  Shales 
  represent 
  Quenstedt's 
  Lias 
  y 
  

   (the 
  zones 
  of 
  Am. 
  Jamesoni, 
  A. 
  Ibex, 
  and 
  A. 
  Davcei, 
  of 
  Oppel) 
  : 
  

   while 
  the 
  Scalpa 
  series 
  is 
  equivalent 
  to 
  Lias 
  h, 
  or 
  the 
  zones 
  of 
  Am. 
  

   margaritatus 
  and 
  A. 
  spinatus 
  of 
  Quenstedt 
  (loc. 
  cit. 
  p. 
  710). 
  The 
  

   Middle 
  Lias 
  on 
  the 
  east 
  side 
  of 
  the 
  island 
  of 
  Raasay 
  is 
  grandly 
  

   developed, 
  and 
  500 
  feet 
  in 
  thickness. 
  Mr. 
  Judd 
  names 
  the 
  follow- 
  

   ing 
  fossils 
  as 
  being 
  most 
  common 
  — 
  Belemnites 
  breviformis, 
  Am. 
  

   margaritatus, 
  A. 
  Engelhardti, 
  Pecten 
  cequivalvis, 
  P. 
  sublcevis, 
  P. 
  liasi- 
  

   nus, 
  Gryphcea 
  cymbium, 
  G. 
  gigantea, 
  Bhynchonella 
  tetrahedra, 
  

   R. 
  acuta, 
  and 
  Spirifera 
  Walcotti. 
  It 
  will 
  be 
  seen 
  that 
  these, 
  amongst 
  

   others, 
  are 
  the 
  well-known 
  species 
  of 
  the 
  Middle 
  Lias 
  of 
  England, 
  

  

  