﻿268 
  

  

  THE 
  EXTINCT 
  VERTEBRATE 
  ANIMALS 
  

  

  usually 
  the 
  case 
  in 
  Bothriolepis. 
  The 
  head 
  is 
  much 
  injured, 
  and 
  

   presents 
  no 
  points 
  for 
  description. 
  

  

  This 
  new 
  species 
  of 
  Bothriolepis 
  is 
  then 
  distinguished 
  from 
  all 
  

   others 
  by 
  the 
  elevated 
  crest 
  on 
  its 
  dorsal 
  surface, 
  and 
  from 
  all 
  

   except 
  B. 
  obesa, 
  Traq., 
  by 
  the 
  comparatively 
  lofty 
  contour 
  of 
  the 
  

   body 
  carapace. 
  

  

  Locality. 
  — 
  As 
  yet 
  only 
  at 
  Eosebrae 
  Quarry, 
  near 
  Elgin. 
  Three 
  

   specimens 
  are 
  known, 
  one 
  of 
  which, 
  here 
  figured, 
  is 
  in 
  the 
  Elgin 
  

   Museum 
  ; 
  the 
  other 
  two 
  are 
  in 
  the 
  Museum 
  of 
  Science 
  and 
  Art, 
  

   Edinburgh. 
  

  

  Incertce 
  sedis. 
  

   Family 
  PHYLL0LEPIM3. 
  

  

  Genus 
  PHYLLOLEPIS, 
  Agassiz. 
  

   Phyllolepis 
  concentrica, 
  Agassiz, 
  1844. 
  

  

  Two 
  fragments 
  of 
  this 
  problematical 
  fish-plate 
  have 
  been 
  procured 
  by 
  

   Mr. 
  W. 
  Taylor 
  — 
  one 
  from 
  Laverockloch 
  and 
  the 
  other 
  from 
  the 
  

   Hospital 
  Quarry, 
  near 
  Elgin. 
  

  

  Sub-class 
  DIPNOI. 
  

   Order 
  SIRENOIDEI. 
  

   Family 
  CTENODONTID-ffi. 
  

  

  Genus 
  CONCHODUS, 
  M'Coy. 
  

   Conchodus 
  ostreiformis, 
  M'Coy, 
  1848. 
  

  

  One 
  specimen 
  only 
  known, 
  namely, 
  a 
  palatal 
  tooth 
  in 
  the 
  collection 
  

   of 
  the 
  Woodwardian 
  Museum, 
  Cambridge. 
  Scaat 
  Craig. 
  

  

  Sub-class 
  TELE 
  OS 
  TO 
  MI. 
  

   Order 
  CROSSOPTERYGII. 
  

   Family 
  HOLOPTYCHIIDiE. 
  

  

  Genus 
  HOLOPTYCHIUS, 
  Agassiz. 
  

   Holoptychius 
  nobilissimus, 
  Agassiz, 
  1839. 
  

   Syn. 
  Gyrolepis 
  giganteus, 
  Ag. 
  ; 
  Holoptychius 
  Murchisoni, 
  Ag. 
  ; 
  H. 
  Dewal- 
  

   quei, 
  Lohest 
  ; 
  H. 
  inflexus, 
  Lohest. 
  

   (Restored 
  figure 
  of 
  the 
  closely 
  allied 
  H. 
  Flemingii, 
  Ag., 
  from 
  Dura 
  Den, 
  

   Fifeshire, 
  PL 
  ii. 
  fig. 
  4). 
  

  

  Mr. 
  Smith 
  Woodward 
  has 
  placed 
  H. 
  Dewalquei, 
  Lohest, 
  as 
  a 
  synonym 
  

  

  