﻿54 
  . 
  ACTINOPTERYGII. 
  

  

  1855. 
  Palceoniscus 
  glaphyrus, 
  F. 
  M'Coy, 
  Brit. 
  Paleeoz. 
  Foss. 
  p. 
  607. 
  

   1877. 
  Acentrophorus 
  (?) 
  glaphyrus, 
  K. 
  H. 
  Traquair, 
  Quart. 
  Journ. 
  GeoL 
  

   Soc. 
  vol. 
  xxxiii. 
  p. 
  562. 
  

  

  Type. 
  Imperfect 
  fish 
  ; 
  York 
  Museum. 
  

  

  Form 
  and 
  proportions 
  as 
  in 
  the 
  type 
  species, 
  but 
  scales 
  con- 
  

   spicuously 
  serrated. 
  

  

  Form. 
  6f 
  Log. 
  Upper 
  Permian 
  (Marl 
  Slate) 
  : 
  Durham 
  and 
  North- 
  

   umberland. 
  

  

  There 
  are 
  no 
  typical 
  examples 
  of 
  this 
  species 
  in 
  the 
  Collection 
  ; 
  

   but 
  the 
  undermentioned 
  are 
  probably 
  to 
  be 
  regarded 
  as 
  small 
  (or 
  

   young) 
  specimens, 
  according 
  to 
  Egerton 
  (in 
  King, 
  Permian 
  Foss. 
  

   p. 
  225, 
  pi. 
  xxii. 
  fig. 
  4) 
  :— 
  

  

  35732. 
  Imperfect 
  trunk, 
  exhibiting 
  traces 
  of 
  serrations 
  on 
  the 
  

   scales 
  ; 
  Marl 
  Slate, 
  probably 
  from 
  Midderidge, 
  Durham. 
  

  

  Purchased, 
  I860. 
  

  

  P. 
  52. 
  Fine 
  specimen 
  0*043 
  in 
  length, 
  showing 
  all 
  the 
  fins 
  but 
  not 
  

   exhibiting 
  any 
  serrations 
  on 
  the 
  scales 
  preserved 
  ; 
  Marl 
  

   Slate, 
  Ferry 
  Hill, 
  Durham. 
  

  

  Presented 
  by 
  Rev. 
  Canon 
  Greenivell, 
  1880. 
  

  

  P. 
  355. 
  Two 
  similar 
  but 
  more 
  imperfect 
  fishes 
  ; 
  Ferry 
  Hill. 
  

  

  Purchased, 
  1881. 
  

  

  P. 
  5140. 
  Elongated 
  smaller 
  specimen 
  0*035 
  in 
  length 
  ; 
  Marl 
  Slate, 
  

   Cullercoats, 
  Northumberland. 
  

  

  Presented 
  by 
  William 
  Binning, 
  Esq., 
  1886, 
  

  

  41317. 
  A 
  more 
  imperfectly 
  preserved 
  small 
  specimen, 
  in 
  counter- 
  

   part 
  ; 
  Ferry 
  Hill. 
  Purchased, 
  1869. 
  

  

  A 
  larger 
  fish 
  than 
  any 
  of 
  the 
  preceding, 
  too 
  imperfectly 
  preserved 
  

   for 
  certain 
  determination, 
  but 
  very 
  much 
  resembling 
  Acentrophorus, 
  

   is 
  described 
  by 
  J. 
  S. 
  Newberry 
  from 
  the 
  Trias 
  of 
  Chicopee 
  Falls, 
  

   Mass., 
  U.S.A., 
  under 
  the 
  name 
  of 
  Acentrophorus 
  chicopensis 
  (Foss. 
  

   Fishes 
  Trias. 
  N. 
  Jersey 
  and 
  Connecticut, 
  1888, 
  p. 
  69, 
  pi. 
  xix. 
  

   figs. 
  3, 
  4). 
  The 
  type 
  specimens 
  are 
  preserved 
  in 
  Tale 
  College 
  

   Museum, 
  New 
  Haven, 
  Conn., 
  and 
  there 
  are 
  no 
  examples 
  in 
  the 
  

   Collection. 
  

  

  To 
  this 
  genus 
  A. 
  Fritsch 
  also 
  ascribes 
  some 
  fragmentary 
  remains 
  

   from 
  the 
  Lower 
  Permian 
  of 
  Bohemia, 
  under 
  the 
  name 
  of 
  Acentro- 
  

   phorus 
  dispersus 
  (Fauna 
  der 
  Gaskohle, 
  &c, 
  Bohmens, 
  vol. 
  iii. 
  1894, 
  

   p. 
  81, 
  woodc. 
  no. 
  279, 
  pis. 
  cxiii., 
  cxiv.). 
  

  

  