﻿, 
  74 
  Scientific 
  Intelligence. 
  

  

  those 
  Radiate 
  animals 
  which 
  Nathorst 
  has 
  referred 
  to 
  Medusites." 
  

   The 
  name 
  Taonichnites 
  had 
  been 
  previously 
  suggested 
  by 
  him 
  

   for 
  some 
  similar 
  form, 
  but 
  he 
  now 
  advocates 
  discarding 
  the 
  old 
  

   name 
  and 
  substituting 
  a 
  new 
  one. 
  Why 
  the 
  new 
  forms 
  should 
  

   not 
  have 
  been 
  included 
  with 
  the 
  old 
  one 
  we 
  are 
  unable 
  to 
  under- 
  

   stand. 
  Fortunately 
  no 
  specific 
  names 
  are 
  given 
  to 
  the 
  series 
  of 
  

   tf 
  j 
  , 
  markings 
  referred 
  to 
  this 
  genus. 
  The 
  author 
  prefers, 
  instead, 
  to 
  

  

  designate 
  them 
  as 
  "forms," 
  and 
  of 
  these 
  he 
  describes 
  and 
  illus- 
  

   trates 
  five. 
  

  

  In 
  these 
  descriptions 
  we 
  no 
  longer 
  find 
  any 
  doubt 
  expressed 
  as 
  

   to 
  the 
  manner 
  in 
  which 
  the 
  tracks 
  were 
  made 
  or 
  the 
  kind 
  of 
  

   animals 
  which 
  made 
  them. 
  One 
  is 
  "the 
  imprint 
  of 
  tentacles 
  

   resting 
  on 
  the 
  bottom." 
  Another, 
  from 
  the 
  Animikie 
  group 
  of 
  

   the 
  Lake 
  Superior 
  region, 
  and 
  the 
  original 
  of 
  Taonichnites, 
  he 
  

   says 
  "is 
  a 
  good 
  illustration 
  of 
  certain 
  impressions 
  which 
  have 
  

   been 
  mistaken 
  for 
  rill 
  markings, 
  but 
  which 
  are 
  really 
  of 
  organic 
  

   origin. 
  It 
  has 
  been 
  made 
  by 
  a 
  Medusite 
  swept 
  along 
  by 
  a 
  cur- 
  

   rent 
  above 
  the 
  surface 
  of 
  a 
  bed 
  of 
  very 
  fine 
  sandy 
  mud." 
  It 
  is 
  

   interesting 
  to 
  know 
  that 
  the 
  same 
  genus 
  ranged 
  from 
  the 
  Animi- 
  

   kie 
  into 
  the 
  Middle 
  Cambrian. 
  

  

  Another 
  new 
  genus 
  proposed 
  is 
  Eoichnites, 
  the 
  name 
  being 
  a 
  

   substitute 
  for 
  Eophyton. 
  Mr. 
  Matthew 
  gives 
  an 
  account 
  of 
  

   Eophyton 
  and 
  of 
  its 
  supposed 
  nature 
  by 
  the 
  original 
  discoverer, 
  

   Torell, 
  and 
  figures 
  what 
  he 
  calls 
  Eoichnites 
  Linnoeanus 
  Torell 
  

   (sp.), 
  from 
  the 
  St. 
  John 
  group. 
  These 
  figures, 
  while 
  they 
  bear 
  

   ,ii 
  i 
  little 
  resemblance 
  to 
  the 
  typical 
  Eophyton 
  Linno&anum, 
  are 
  very 
  

  

  much 
  like 
  some 
  of 
  the 
  figures 
  of 
  Medusichnites, 
  and 
  should 
  be 
  

   placed 
  there 
  if 
  that 
  genus 
  be 
  a 
  good 
  one. 
  

  

  A 
  third 
  new 
  genus 
  established 
  is 
  Ctenichnites, 
  adopted 
  for 
  

   markings 
  which 
  Mr. 
  Matthew 
  says 
  Torell 
  and 
  Linnarsson 
  con- 
  

   founded 
  with 
  Eophyton. 
  We 
  are 
  told 
  the 
  markings 
  resemble 
  

   Eoichnites 
  so 
  far 
  " 
  that 
  they 
  might 
  easily 
  be 
  supposed 
  to 
  have 
  

   been 
  produced 
  by 
  larger 
  individuals 
  of 
  the 
  kind 
  which 
  made 
  the 
  

   Eoichnites.'''' 
  This 
  genus 
  has 
  one 
  species, 
  C. 
  ingens, 
  and 
  it 
  is 
  

   described 
  with 
  considerable 
  detail. 
  A 
  table 
  is 
  given 
  of 
  the 
  chief 
  

   varieties. 
  Then 
  the 
  sort 
  of 
  animal 
  supposed 
  to 
  have 
  made 
  them 
  

   is 
  discussed, 
  the 
  exposures 
  yielding 
  the 
  following 
  inferences 
  to 
  

   1 
  the 
  author 
  : 
  

  

  " 
  1. 
  That 
  the 
  animal 
  lived 
  in 
  schools. 
  2. 
  That 
  it 
  had 
  a 
  rapid, 
  

   direct, 
  darting 
  motion. 
  3. 
  That 
  it 
  had 
  three 
  or 
  four 
  flexible, 
  

   fleshy 
  arms. 
  4. 
  That 
  these 
  arms 
  were 
  furnished 
  with 
  sharp 
  

   (horny?) 
  spines. 
  5. 
  That 
  it 
  had 
  an 
  easy 
  motion 
  through 
  the 
  

   ..Hill 
  | 
  water 
  so 
  that 
  sometimes 
  the 
  arms 
  of 
  one 
  side 
  touched 
  the 
  bot- 
  

  

  tom, 
  sometimes 
  the 
  other." 
  

  

  Then 
  "having 
  found 
  reason 
  to 
  believe 
  Ctenichnites 
  to 
  be 
  of 
  

   animal 
  origin," 
  Mr. 
  Matthews 
  concludes 
  that 
  it 
  might 
  have 
  been 
  a 
  

   naked 
  cephalopod. 
  Then 
  the 
  habits 
  of 
  squids, 
  and 
  the 
  nature 
  of 
  

   coprolites, 
  and 
  the 
  armature 
  of 
  trilobites 
  are 
  examined 
  in 
  turn, 
  

   and 
  the 
  final 
  conclusion 
  is 
  that 
  all 
  the 
  facts 
  point 
  to 
  squids 
  of 
  

   some 
  sort 
  being 
  the 
  probable 
  source 
  of 
  the 
  Ctenichnites 
  markings. 
  

  

  