﻿186 
  AOTINOPTERYGII. 
  

  

  of 
  Bhynchoncodes 
  macroeephalus, 
  0. 
  G. 
  Costa, 
  Atti 
  Accad. 
  Pontan. 
  

   vol. 
  viii. 
  (1864), 
  p. 
  102, 
  pi. 
  ix. 
  figs. 
  10, 
  11. 
  They 
  have 
  already 
  been 
  

   placed 
  in 
  this 
  genus 
  by 
  F. 
  Bassani, 
  Denkschr. 
  k. 
  Akad. 
  Wiss., 
  

   math.-naturw. 
  CI. 
  vol. 
  xlv. 
  (1882), 
  p. 
  239. 
  

  

  The 
  so-called 
  Propterus 
  serratus, 
  Miinster 
  MS. 
  (L. 
  Agassiz, 
  Poiss. 
  

   Toss. 
  vol. 
  ii. 
  pt. 
  i. 
  1844, 
  p. 
  296), 
  from 
  the 
  Lithographic 
  Stone 
  of 
  

   Bavaria 
  (type 
  in 
  Berlin 
  Museum), 
  is 
  undefined. 
  

  

  Genus 
  NOTAGOGUS, 
  Agassiz. 
  

  

  [Poiss. 
  Foss. 
  vol. 
  ii. 
  pt. 
  i. 
  1833-44, 
  pp. 
  10, 
  293.] 
  

  

  Syn. 
  Blenniomoeus, 
  0. 
  G. 
  Costa, 
  Atti 
  Accad. 
  Pontan. 
  vol. 
  v. 
  1850, 
  

   p. 
  319. 
  

   Calignathus, 
  0. 
  G. 
  Costa, 
  ibid. 
  vol. 
  vii. 
  1853, 
  p. 
  37. 
  

  

  A 
  genus 
  scarcely 
  distinguished 
  from 
  Propterus, 
  differing 
  only 
  

   in 
  the 
  non-elongation 
  of 
  the 
  anterior 
  rays 
  of 
  the 
  dorsal 
  fin, 
  which 
  

   are 
  very 
  widely 
  spaced, 
  and 
  in 
  the 
  less 
  deeply 
  forked 
  character 
  of 
  

   the 
  caudal 
  fin. 
  The 
  vertebral 
  rings 
  also 
  appear 
  to 
  be 
  more 
  robust 
  

   than 
  in 
  Propterus. 
  

  

  Notagogus 
  pentlandi, 
  Agassiz. 
  

   [Plate 
  III. 
  figs. 
  7, 
  8.] 
  

  

  1833-44. 
  Notagogus 
  pentlandi, 
  L. 
  Agassiz, 
  Poiss. 
  Foss. 
  vol. 
  ii. 
  pt. 
  l. 
  

  

  pp. 
  10, 
  294, 
  pi. 
  xlix. 
  fig. 
  2. 
  

   1833-44. 
  Notagogus 
  latior, 
  L. 
  Agassiz, 
  ibid. 
  pp. 
  10, 
  294, 
  pi. 
  xlix. 
  fig. 
  3. 
  

  

  [Distorted 
  fish 
  ; 
  Paris 
  Museum 
  of 
  Natural 
  History.] 
  

   1850. 
  Notagogus 
  pentlandi, 
  O. 
  G. 
  Costa, 
  Atti 
  Accad. 
  Pontan. 
  vol. 
  v. 
  

  

  p. 
  312, 
  pi. 
  v. 
  fig. 
  2, 
  pi. 
  vii. 
  fig. 
  5. 
  

   1850. 
  Notagogus 
  erythrolepis, 
  O. 
  G. 
  Costa, 
  ibid. 
  p. 
  314, 
  pi. 
  iv. 
  figs. 
  6, 
  7. 
  

   1850. 
  Notagogus 
  minor, 
  O. 
  G. 
  Costa, 
  ibid. 
  p. 
  315, 
  pi. 
  v. 
  fig. 
  4. 
  

   1850. 
  Blenniomoeus 
  longicauda, 
  O. 
  G. 
  Costa, 
  ibid. 
  p. 
  319, 
  pi. 
  vi. 
  fig. 
  2. 
  

   1850. 
  Blenniomoeus 
  brevicauda, 
  O. 
  G. 
  Costa, 
  ibid. 
  p. 
  321, 
  pi. 
  v. 
  fig. 
  3. 
  

   1853. 
  Blenniomoeus 
  major, 
  0. 
  G. 
  Costa, 
  ibid. 
  vol. 
  vii. 
  p. 
  34, 
  pi. 
  ii. 
  

  

  figs. 
  4-6. 
  

   1864. 
  Notagogus 
  pentlandi, 
  0. 
  G. 
  Costa, 
  ibid. 
  vol. 
  viii. 
  p. 
  72, 
  pi. 
  xii. 
  

  

  fig. 
  5. 
  

   1864. 
  Notagogus 
  crassicauda, 
  0. 
  G. 
  Costa, 
  ibid. 
  p. 
  74, 
  pi. 
  xii. 
  figs. 
  6, 
  7. 
  

   1864. 
  Blenniomoeus 
  longicauda, 
  0. 
  G. 
  Costa, 
  ibid. 
  p. 
  99. 
  

   1864. 
  Notagogus 
  erythrolepis, 
  0. 
  G. 
  Costa, 
  ibid. 
  p. 
  102, 
  pi. 
  xi. 
  fig. 
  11. 
  

   1864. 
  Notagogus 
  gracilis, 
  0. 
  G. 
  Costa, 
  ibid. 
  p. 
  103, 
  pi. 
  xi. 
  fig. 
  8. 
  

   1882. 
  Notagogus 
  pentlandi, 
  F. 
  Bassani, 
  Denkschr. 
  k. 
  Akad. 
  Wiss., 
  

  

  math.-naturw. 
  CI. 
  vol. 
  xlv. 
  pp. 
  237, 
  239. 
  

  

  Type. 
  Nearly 
  complete 
  fish 
  ; 
  British 
  Museum. 
  

  

  A 
  species 
  attaining 
  a 
  length 
  of 
  about 
  0*15, 
  but 
  usually 
  smaller. 
  

  

  