﻿PACHYCORMID.E. 
  407 
  

  

  Protosphyrsena 
  termirostris, 
  A. 
  S. 
  Woodward. 
  

  

  1860. 
  Saurocephalus 
  striatus, 
  V. 
  Kiprijanoff 
  (error 
  -e), 
  Bull. 
  Soc. 
  Imp. 
  

  

  Nat. 
  Moscou, 
  vol. 
  xxxiii. 
  pt. 
  i. 
  p. 
  666, 
  pi. 
  x. 
  fig. 
  3. 
  

   1895. 
  Protosphyrcena 
  tenuirostris, 
  A. 
  S. 
  Woodward, 
  Geol. 
  Mag. 
  [4] 
  

  

  vol. 
  ii. 
  p. 
  211, 
  woodc. 
  fig. 
  1. 
  

  

  Type. 
  Rostrum 
  ; 
  Woodwardian 
  Museum, 
  Cambridge. 
  

  

  Rostrum 
  much 
  elongated 
  and 
  slender, 
  somewhat 
  flexed 
  upwards 
  

   shortly 
  in 
  advance 
  of 
  the 
  vomerine 
  teeth, 
  and 
  attaining 
  a 
  length 
  of 
  

   about 
  0*24 
  with 
  a 
  transverse 
  diameter 
  of 
  0*027 
  at 
  its 
  base 
  where 
  

   the 
  vomerine 
  teeth 
  are 
  implanted 
  ; 
  transverse 
  section 
  remarkably 
  

   cylindroidal 
  throughout 
  its 
  length, 
  slightly 
  depressed 
  in 
  its 
  middle 
  

   portion 
  ; 
  external 
  surface 
  marked 
  by 
  fine 
  longitudinal 
  ridges. 
  

  

  A 
  diagrammatic 
  outline 
  of 
  the 
  left 
  side-view 
  of 
  the 
  type 
  specimen 
  

   is 
  shown 
  of 
  half 
  the 
  natural 
  size 
  in 
  fig. 
  41, 
  no. 
  1 
  (p. 
  403), 
  and 
  

   transverse 
  sections 
  are 
  given, 
  ibid. 
  nos. 
  1 
  a-c. 
  The 
  Russian 
  speci- 
  

   men 
  described 
  by 
  Kiprijanoff 
  is 
  slightly 
  more 
  attenuated. 
  

  

  Form. 
  Sf 
  Log. 
  Cenomanian 
  (Cambridge 
  Greensand) 
  : 
  Cambridge- 
  

   shire 
  • 
  Kursk, 
  Russia. 
  

  

  Not 
  represented 
  in 
  the 
  Collection. 
  

  

  Protosphyrsena 
  keeping!, 
  A. 
  S. 
  Woodward. 
  

  

  1895. 
  Protosphyrcena 
  keepingi, 
  A. 
  S. 
  Woodward, 
  Geol. 
  Mag. 
  [4] 
  vol. 
  ii. 
  

   p. 
  212, 
  woodcut 
  fig. 
  4. 
  

  

  Type. 
  Portion 
  of 
  rostrum 
  ; 
  Woodwardian 
  Museum, 
  Cambridge. 
  

  

  Rostrum 
  remarkably 
  stout 
  and 
  short, 
  circular 
  in 
  transverse 
  

   section, 
  only 
  slightly 
  flattened 
  on 
  the 
  top 
  at 
  its 
  base 
  ; 
  external 
  sur- 
  

   face 
  ornamented 
  with 
  reticulating 
  rugse. 
  

  

  A 
  diagrammatic 
  outline 
  of 
  the 
  left 
  side-view 
  of 
  the 
  type 
  specimen 
  

   is 
  shown 
  of 
  half 
  the 
  natural 
  size 
  in 
  fig. 
  41, 
  no. 
  4 
  (p. 
  403), 
  and 
  

   transverse 
  sections 
  are 
  given, 
  ibid. 
  nos. 
  4 
  a, 
  b. 
  

  

  Form. 
  Sf 
  Log. 
  Cenomanian 
  (Cambridge 
  Greensand) 
  ; 
  Cambridge- 
  

   shire. 
  

  

  Not 
  represented 
  in 
  the 
  Collection. 
  

  

  Protosphyrsena 
  ornata, 
  A. 
  S. 
  Woodward. 
  

  

  1895. 
  Protosphy?-cena 
  ornata, 
  A. 
  S. 
  Woodward, 
  Geol. 
  Mag. 
  [4] 
  vol. 
  ii. 
  

   p. 
  212, 
  pi. 
  viii. 
  fig. 
  7. 
  

  

  Type. 
  Imperfect 
  rostrum 
  ; 
  Woodwardian 
  Museum, 
  Cambridge. 
  

  

  Rostrum 
  much 
  elongated 
  and 
  attaining 
  a 
  length 
  of 
  about 
  0*2 
  

   with 
  a 
  transverse 
  diameter 
  probably 
  of 
  0*02 
  or 
  0*025 
  at 
  its 
  base 
  

   where 
  the 
  vomerine 
  teeth 
  are 
  implanted 
  ; 
  vomerine 
  area 
  elongated, 
  

  

  