﻿^ 
  r 
  °l- 
  53'] 
  THE 
  PORTRAINE 
  INLIER 
  (CO. 
  DUBLIN). 
  537 
  

  

  Of 
  Remopleurides 
  I 
  have 
  been 
  able 
  to 
  identify 
  only 
  one 
  portion 
  of 
  a 
  

   free 
  cheek 
  and 
  eye, 
  of 
  which 
  the 
  species 
  is 
  doubtful. 
  

  

  The 
  species 
  of 
  Gheirurus 
  are 
  badly 
  preserved, 
  with 
  the 
  exception 
  

   of 
  Ch. 
  [Pseudosphazrexochus] 
  subquadratus, 
  one 
  excellent 
  specimen 
  of 
  

   which 
  I 
  have 
  discovered. 
  

  

  Staurocephalus 
  appears 
  rare, 
  but 
  I 
  have 
  chipped 
  out 
  one 
  specimen 
  

   of 
  the 
  globate 
  portion 
  of 
  the 
  glabella. 
  Whether 
  it 
  belongs 
  to 
  

   St. 
  Murchisoni 
  or 
  St. 
  globiceps 
  is 
  doubtful. 
  

  

  Stygina 
  laiifrons 
  is 
  represented 
  by 
  one 
  pygidium. 
  

  

  Entomostraca. 
  

  

  Primitia 
  M'Ooyi, 
  Salter, 
  occurs 
  sparingly 
  in 
  this 
  limestone. 
  

  

  Brachiopoda. 
  

  

  The 
  following 
  brachiopoda 
  have 
  been 
  identified 
  among 
  the 
  

   specimens 
  handed 
  to 
  me. 
  There 
  are 
  fragments 
  of 
  some 
  others 
  

   which, 
  however, 
  are 
  much 
  too 
  imperfect 
  for 
  identification. 
  But 
  

   brachiopoda 
  on 
  the 
  whole 
  seem 
  to 
  be 
  far 
  from 
  common 
  ; 
  Orthis 
  

   biforata, 
  Plectambonites 
  sericea, 
  and 
  Rafinesquina 
  deltoidea, 
  var. 
  

   undata, 
  are 
  the 
  most 
  abundant 
  species. 
  

  

  Orthis 
  biforata, 
  Schloth. 
  

  

  elegantula, 
  Dalm. 
  ? 
  

  

  testudinaria, 
  Dalm. 
  

  

  Plectambonites 
  sericea, 
  Sow. 
  

   MOLLUSCA. 
  

  

  Bafinesquina 
  deltoidea, 
  Conr. 
  

  

  , 
  var. 
  undata, 
  M'Coy. 
  

  

  Strophomena, 
  sp. 
  ? 
  

   Triplesia 
  insularis, 
  Eichw. 
  

  

  Bellerophon 
  sp. 
  I 
  Modiolopsis 
  sp. 
  

  

  Cyclonema 
  sp. 
  | 
  Orthoceras 
  audax, 
  Salter. 
  

  

  The 
  only 
  shell 
  of 
  which 
  I 
  am 
  able 
  to 
  identify 
  the 
  species 
  is 
  

   Orthoceras 
  audax, 
  which 
  is 
  found 
  at 
  B-hiwlas, 
  and 
  probably 
  at 
  the 
  

   Chair 
  of 
  Kildare. 
  

  

  Polyzoa. 
  Ptilodictya 
  lanceolata, 
  Goldf. 
  

  

  Actinozoa. 
  Heliolites 
  sp. 
  and 
  Halgsites 
  sp. 
  

  

  This 
  species 
  of 
  Heliolites 
  resembles, 
  in 
  the 
  paucity 
  of 
  coenenchymal 
  

   tissue, 
  etc., 
  the 
  description 
  and 
  figures 
  oiPalceopora 
  [Lyopora] 
  favosa, 
  

   M'Coy, 
  in 
  M'Coy's 
  ' 
  Synopsis 
  of 
  British 
  Palaeozoic 
  Fossils 
  ' 
  (pi. 
  i. 
  c, 
  

   fig. 
  3, 
  p. 
  15), 
  but 
  Nicholson 
  & 
  Etheridge 
  have 
  declared 
  M'Coy's 
  

   account 
  to 
  be 
  apocryphal. 
  The 
  larger 
  corallites 
  are, 
  moreover, 
  

   smaller 
  and 
  closer 
  together 
  than 
  in 
  typical 
  specimens 
  of 
  L. 
  favosa 
  

   from 
  Scotland. 
  

  

  Conclusion". 
  — 
  The 
  fauna 
  of 
  this 
  limestone 
  has 
  undoubtedly 
  a 
  Bala 
  

   facies, 
  but 
  judging 
  from 
  the 
  presence 
  of 
  Stygina 
  laiifrons, 
  Pseuio- 
  

   sphcerexochuis 
  sub 
  quad 
  rat 
  us, 
  Trinucleus 
  seticomis, 
  Cybele 
  rugosa, 
  and 
  

   species 
  of 
  Remopleurides, 
  Harpes, 
  Staurocephalus, 
  and 
  Primitia 
  

   M'Coyi, 
  I 
  should 
  be 
  inclined 
  to 
  associate 
  it 
  more 
  closely 
  with 
  the 
  

  

  