﻿M 
  

  

  MR. 
  F. 
  R. 
  COWPER 
  REED 
  ON 
  THE 
  

  

  [Feb. 
  1897, 
  

  

  but 
  with 
  respect 
  to 
  the 
  Upper 
  Bala 
  we 
  cannot 
  say 
  the 
  same, 
  for 
  the 
  

   fossils 
  so 
  far 
  collected 
  are 
  both 
  few 
  in 
  numbers 
  and 
  poorly 
  preserved, 
  

   and 
  the 
  fauna 
  requires 
  much 
  more 
  working 
  out, 
  Thus 
  we 
  must 
  

   attach 
  more 
  importance 
  to 
  the 
  occurrence 
  of 
  a 
  few 
  typical 
  Upper 
  

   Bala 
  forms 
  than 
  their 
  mere 
  number 
  alone 
  would 
  seem 
  to 
  justify. 
  

  

  List 
  op 
  Keisley 
  Limestone 
  Fossils 
  occurrinq 
  in 
  other 
  

   British 
  Beds. 
  

  

  

  Lower 
  

   Bala. 
  

  

  Middle 
  

   Bala. 
  

  

  Upper 
  

   Bala. 
  

  

  Silurian. 
  

  

  Cheirurus 
  birnucronatus 
  Murch 
  

  

  * 
  

  

  * 
  

  

  * 
  

  

  * 
  

  

  ? 
  

  

  * 
  

  

  * 
  

   ? 
  

  

  ? 
  

   * 
  

  

  * 
  

  

  * 
  

   * 
  

  

  * 
  

   -* 
  

  

  * 
  

  

  * 
  

   # 
  

  

  * 
  

   * 
  

   * 
  

   * 
  

   * 
  

  

  * 
  

  

  * 
  

  

  * 
  

   * 
  

   * 
  

  

  * 
  

  

  * 
  

  

  * 
  

  

  * 
  

  

  * 
  

   * 
  

   * 
  

  

  * 
  

   * 
  

   * 
  

   * 
  

  

  * 
  

   ? 
  

   * 
  

   * 
  

  

  * 
  

  

  * 
  

   * 
  

  

  * 
  

   * 
  

  

  * 
  

   * 
  

  

  * 
  

   * 
  

  

  * 
  

   * 
  

  

  * 
  

   * 
  

  

  * 
  

   * 
  

  

  * 
  

  

  

  Calymene 
  Bhimenbachi, 
  Brong 
  

  

  Illcsnus 
  Bowmani, 
  Salt 
  

  

  Staurocephalus 
  Murchisoni, 
  Barr. 
  ... 
  

   Pkillipsinella 
  parabola, 
  Barr 
  

  

  Bemopleurides 
  longicostatus, 
  Portl. 
  . 
  . 
  . 
  

   Lichas 
  laxatus, 
  M' 
  Coy 
  

  

  

  Primitia 
  M' 
  Coi/i, 
  Salt 
  

  

  

  ,, 
  Actonice, 
  Sow 
  

  

  

  

  ,, 
  biloba, 
  L 
  

  

  

  ,, 
  flabelltdum, 
  Sow 
  

  

  „ 
  testudinaria, 
  Dalm 
  

  

  

  Strophomena 
  antiquata, 
  Sow 
  

  

  ,, 
  corrugatella, 
  Dav 
  

  

  Triplecia 
  insularis, 
  Eichw 
  

  

  

  Streptis 
  monilifera. 
  M'Coy!... 
  

   Bafinesquina 
  expansa, 
  Sow. 
  coi 
  „ 
  e 
  .... 
  

   ,, 
  ? 
  deltoidea 
  

  

  Leptcsna 
  rhomboidalis, 
  Wilck 
  

  

  Christiania 
  tenuicincta, 
  M'Coy 
  

  

  Plectambonites 
  transversalis, 
  Dalm. 
  . 
  

  

  ,, 
  quinquecostata, 
  M'Coy 
  

  

  Camerella 
  ? 
  Thomso 
  ni, 
  Dav 
  

  

  Atrypa 
  marqinalis, 
  Dalm 
  

  

  ? 
  Ptilodictya 
  costellata, 
  M'Coy 
  

  

  Holopea 
  concinna, 
  M'Coy 
  

  

  „ 
  striatetta, 
  Sow 
  

  

  ? 
  Pterincea 
  subfalcata, 
  Conr. 
  (var. 
  

   at 
  Keisley) 
  

  

  Sphcsronites 
  piriformis, 
  Forbes 
  

  

  Prasopora 
  Gray®, 
  Nich. 
  & 
  Eth 
  

  

  Haly 
  sites 
  catenularia, 
  L 
  

  

  Stenopora 
  fibrosa, 
  G-oldf. 
  

  

  ? 
  Nebulipora 
  lens, 
  M'Coy 
  

  

  Streptelasma 
  europceum, 
  F. 
  Bom. 
  ... 
  

  

  