﻿6 
  W. 
  H. 
  FLOWER 
  ON 
  A. 
  HALITHER1UM 
  

  

  the 
  molar 
  teeth, 
  both 
  absolutely 
  and 
  relatively 
  to 
  the 
  cranium 
  

   generally. 
  

  

  Very 
  few 
  remains 
  of 
  Sirenians 
  have 
  hitherto 
  been 
  found 
  in 
  Belgium. 
  

   My 
  esteemed 
  friend 
  Professor 
  Yan 
  Beneden 
  has 
  recently 
  described 
  and 
  

   figured 
  the 
  much-mutilated 
  occipital 
  portion 
  of 
  a 
  skull 
  of 
  an 
  animal 
  

   apparently 
  of 
  this 
  order, 
  to 
  which 
  he 
  has 
  given 
  the 
  name 
  of 
  Crassi- 
  

   therium 
  robustum*. 
  Tt 
  is 
  obvious 
  that 
  there 
  are 
  no 
  materials 
  for 
  

   instituting 
  a 
  comparison 
  between 
  this 
  and 
  our 
  present 
  specimen. 
  

   M. 
  le 
  Yicomtc 
  Du 
  Bus 
  has 
  given 
  a 
  preliminary 
  notice 
  of 
  the 
  discovery 
  

   of 
  the 
  remains 
  of 
  a 
  species 
  of 
  Halitlierivm 
  in 
  the 
  clay 
  at 
  Boom, 
  

   between 
  Antwerp 
  and 
  Brussels 
  f 
  . 
  But 
  of 
  the 
  head 
  unfortunately 
  

   very 
  little 
  was 
  found, 
  and 
  no 
  detailed 
  description 
  has 
  been 
  published. 
  

   And 
  the 
  same 
  may 
  be 
  said 
  of 
  a 
  nearly 
  complete 
  skeleton 
  discovered 
  

   by 
  M. 
  Lesseliers 
  at 
  Basel, 
  near 
  Bupelmonde, 
  in 
  the 
  same 
  neighbour- 
  

   hood, 
  referred 
  to 
  in 
  Professor 
  Yan 
  Beneden's 
  memoir 
  quoted 
  above. 
  

  

  A 
  very 
  thorough 
  examination 
  and 
  comparison 
  of 
  all 
  remains 
  of 
  

   extinct 
  Sirenians 
  scattered 
  throughout 
  the 
  various 
  continental 
  mu- 
  

   seums 
  must 
  be 
  made 
  before 
  their 
  specific 
  distinctions 
  can 
  be 
  satis- 
  

   factorily 
  ascertained. 
  It 
  is 
  quite 
  possible 
  that 
  the 
  present 
  specimen 
  

   might 
  then 
  be 
  found 
  to 
  belong 
  to 
  one 
  of 
  the 
  already-named 
  species 
  ; 
  

   but, 
  as 
  has 
  just 
  been 
  pointed 
  out, 
  it 
  presents 
  characters 
  in 
  which 
  it 
  

   does 
  not 
  agree 
  with 
  any 
  of 
  those 
  which 
  are 
  sufficiently 
  preserved 
  and 
  

   well-described 
  to 
  admit 
  of 
  comparison. 
  I 
  think 
  it 
  will 
  be 
  most 
  

   convenient 
  to 
  bestow 
  upon 
  it 
  a 
  specific 
  designation, 
  and 
  therefore 
  

   propose 
  that 
  of 
  Ganhami, 
  to 
  commemorate 
  the 
  assiduity 
  with 
  which 
  

   its 
  owner 
  has 
  collected, 
  and 
  liberally 
  made 
  available 
  for 
  scientific 
  

   examination, 
  the 
  palaeontological 
  treasures 
  of 
  the 
  neighbourhood 
  in 
  

   which 
  he 
  resides. 
  

  

  The 
  subject 
  of 
  the 
  origin 
  of 
  the 
  very 
  mixed 
  fauna 
  of 
  the 
  Bed 
  Crag 
  

   bone-bed 
  has 
  been 
  so 
  frequently 
  and 
  ably 
  discussed 
  in 
  the 
  publica- 
  

   tions 
  of 
  this 
  Society 
  and 
  elsewhere, 
  that 
  there 
  is 
  no 
  occasion 
  for 
  me 
  

   to 
  enter 
  into 
  it 
  at 
  present. 
  I 
  would 
  only 
  remark 
  in 
  passing 
  that 
  the 
  

   discovery 
  of 
  a 
  Halitlierium 
  allied 
  to 
  the 
  species 
  found 
  in 
  the 
  neigh- 
  

   bourhood 
  of 
  Darmstadt 
  is 
  an 
  additional 
  instance 
  to 
  those 
  already 
  

   recorded 
  of 
  the 
  existence 
  in 
  our 
  Crag 
  of 
  forms 
  characteristic 
  of 
  the 
  

   Miocene 
  fauna 
  of 
  the 
  Rhine 
  valley. 
  It 
  is 
  also 
  worthy 
  of 
  mention 
  

   that 
  Mr. 
  Canham's 
  collection 
  contains 
  three 
  fine 
  specimens 
  of 
  teeth 
  

   of 
  Squalodon, 
  a 
  form 
  often 
  found 
  associated 
  elsewhere 
  with 
  Hali- 
  

   theriumi. 
  On 
  the 
  other 
  hand, 
  as 
  showing 
  the 
  mixed 
  nature 
  of 
  the 
  

   fauna, 
  there 
  are 
  from 
  the 
  same 
  beds 
  some 
  beautifully 
  preserved 
  

   teeth 
  of 
  Coryplwdon 
  — 
  one 
  in 
  particular, 
  a 
  last 
  upper 
  molar, 
  very 
  

   like, 
  but 
  rather 
  larger 
  than 
  that 
  figured 
  by 
  Hebert 
  as 
  C. 
  eoccenus, 
  

   from 
  the 
  earliest 
  Tertiaries 
  of 
  France 
  §. 
  

  

  * 
  "Un 
  Sirenien 
  nouveau 
  du 
  terrain 
  Eupelien," 
  Bull. 
  Acad. 
  Eoy. 
  deBeleique, 
  

   2me 
  serie, 
  t. 
  xxxii. 
  (1871) 
  p. 
  164. 
  

  

  t 
  Bull. 
  Acad. 
  Eoy. 
  de 
  Belgique, 
  2me 
  serie, 
  t. 
  xxvi. 
  (1868) 
  p. 
  20. 
  

  

  X 
  One 
  of 
  these 
  is 
  mentioned 
  by 
  Mr. 
  EayLankester 
  (Quarterly 
  Journal 
  of 
  the 
  

   Geological 
  Society, 
  vol. 
  xxvi. 
  (1870) 
  p. 
  512). 
  The 
  others 
  appear 
  to 
  have 
  been 
  

   added 
  since. 
  

  

  § 
  Ann. 
  Sc. 
  Nat. 
  4me 
  serie, 
  t. 
  vi. 
  p. 
  1. 
  

  

  