﻿80 
  ME. 
  P. 
  E. 
  COWPEE 
  EEED 
  ON 
  THE 
  [Feb. 
  l897 
  r 
  

  

  mentioned. 
  The 
  ornamentation, 
  so 
  far 
  as 
  can 
  be 
  made 
  out, 
  consists 
  

   of 
  fine, 
  longitudinal, 
  sigmoidally-curved 
  lines, 
  with 
  some 
  faint 
  con- 
  

   tinuous 
  transverse 
  lines 
  running 
  round 
  the 
  whorls, 
  and 
  better 
  marked 
  

   near 
  the 
  middle 
  of 
  the 
  whorls. 
  

  

  Pletjeotomaeia 
  notabilis, 
  Eichwald 
  ? 
  

  

  An 
  internal 
  cast 
  of 
  a 
  Pleurotomaria 
  appears 
  to 
  me 
  to 
  be 
  referable 
  

   to 
  this 
  Russian 
  species 
  described 
  and 
  figured 
  by 
  Eichwald. 
  1 
  The 
  

   shell 
  itself 
  has 
  not 
  been 
  figured 
  or 
  described, 
  and 
  the 
  casts 
  of 
  

   species 
  of 
  Pleurotomaria 
  are 
  always 
  somewhat 
  unsatisfactory 
  and 
  

   difficult 
  of 
  identification. 
  PI. 
  notabilis 
  occurs 
  in 
  the 
  JBorkholni 
  

   Limestone. 
  

  

  Mtjechisonia, 
  sp. 
  n. 
  ? 
  (PI. 
  YI. 
  figs. 
  8 
  & 
  8 
  a.) 
  

  

  The 
  cast 
  of 
  a 
  small 
  gasteropod 
  from 
  Keisley 
  appears 
  to 
  belong 
  

   to 
  the 
  genus 
  Murchisonia, 
  though 
  some 
  of 
  the 
  tall 
  species 
  of 
  Pleuro- 
  

   tomaria 
  are 
  not 
  unlike 
  it. 
  It 
  is 
  a 
  turriculate 
  shell 
  of 
  six 
  convex 
  

   whorls, 
  with 
  an 
  apical 
  angle 
  of 
  30°. 
  Each 
  whorl 
  is 
  very 
  short, 
  

   being 
  less 
  than 
  half 
  as 
  long 
  as 
  broad. 
  This 
  gives 
  a 
  peculiar 
  com- 
  

   pressed 
  appearance 
  to 
  the 
  shell. 
  The 
  suture-line 
  is 
  almost 
  at 
  right 
  

   angles 
  to 
  the 
  axis. 
  A 
  faint, 
  narrow, 
  spiral 
  band 
  can 
  be 
  detected 
  

   running 
  round 
  rather 
  below 
  the 
  middle 
  of 
  the 
  whorls. 
  I 
  am 
  not 
  

   acquainted 
  with 
  any 
  species 
  showing 
  the 
  above 
  characters, 
  and 
  

   believe 
  that 
  this 
  specimen 
  belongs 
  to 
  a 
  new 
  species. 
  Its 
  length 
  is- 
  

   7 
  millim., 
  and 
  across 
  the 
  basal 
  whorl 
  the 
  breadth 
  is 
  4-5 
  millim. 
  

  

  Pteropoda. 
  

  

  CONTJLAEIA, 
  Sp. 
  

  

  A 
  solitary 
  specimen 
  of 
  Conularia 
  in 
  the 
  Carlisle 
  Museum 
  has 
  tha 
  

   following 
  characters 
  : 
  — 
  Shell 
  short, 
  triangular, 
  rapidly 
  tapering 
  to' 
  

   the 
  apex, 
  with 
  sides 
  converging 
  at 
  an 
  angle 
  of 
  about 
  50°. 
  Surface 
  

   with 
  a 
  median 
  depression, 
  and 
  ornamented 
  with 
  simple, 
  transverse, 
  

   parallel 
  raised 
  lines, 
  slightly 
  sinuated 
  in 
  the 
  middle, 
  and 
  more 
  than 
  

   their 
  thickness 
  apart. 
  Length 
  =3 
  millim. 
  ; 
  width 
  at 
  front 
  end 
  = 
  

   2*5 
  millim. 
  

  

  Harkness 
  2 
  records 
  Conularia 
  elongata 
  (Portlock 
  3 
  ) 
  from 
  the 
  

   Keisley 
  Limestone, 
  and 
  this 
  specimen, 
  to 
  which 
  I 
  hesitate 
  to 
  give 
  a 
  

   specific 
  name, 
  is 
  thus 
  labelled. 
  The 
  ornamentation 
  is 
  certainly 
  

   very 
  similar, 
  though 
  I 
  was 
  not 
  able 
  to 
  distinguish 
  the 
  fine 
  longi- 
  

   tudinal 
  lines 
  which 
  Portlock 
  figures. 
  Portlock 
  says 
  of 
  his 
  species 
  

   that 
  it 
  is 
  'characterized 
  by 
  the 
  very 
  gradual 
  decrease 
  in 
  its 
  

   thickness,' 
  whereas 
  our 
  specimen 
  is 
  characterized 
  by 
  the 
  very 
  rapid 
  

   decrease 
  in 
  its 
  thickness, 
  so 
  as 
  to 
  resemble 
  in 
  shape 
  Hall's 
  species 
  

   C. 
  trentonensis. 
  4 
  ' 
  For 
  these 
  reasons, 
  I 
  cannot 
  hold 
  that 
  the 
  identifi- 
  

  

  i 
  ' 
  Letkgea 
  Eossica,' 
  vol. 
  i. 
  (1860-61) 
  p. 
  1170, 
  pi. 
  xliv. 
  figs. 
  22 
  a-d. 
  

  

  2 
  Quart. 
  Journ. 
  Geol. 
  Soc. 
  vol. 
  xxi. 
  (1865) 
  p. 
  249. 
  

  

  3 
  ' 
  Rep. 
  Geol. 
  Londonderry' 
  (1843), 
  p. 
  393, 
  pi. 
  xxix 
  a. 
  fig. 
  2. 
  

  

  4 
  'Pal. 
  N.Y.,' 
  vol. 
  i. 
  (1847) 
  p. 
  222, 
  pi. 
  lviii. 
  fig. 
  4. 
  

  

  