﻿CEBUS 
  97 
  

  

  all 
  that 
  remains 
  of 
  Geoffroy's 
  "ventre 
  roussatre." 
  Ex 
  Geoffroy's 
  speci- 
  

   men 
  in 
  Paris 
  Museum. 
  

  

  Measurements. 
  About 
  the 
  size 
  of 
  an 
  ordinary 
  Capuchin. 
  Total 
  

   length, 
  828.2; 
  tail, 
  393.7; 
  foot, 
  120.6. 
  Skull, 
  not 
  the 
  type: 
  occipito- 
  

   nasal 
  length, 
  88; 
  Hensel, 
  72 
  ; 
  zygomatic 
  width, 
  62; 
  intertemporal 
  

   width, 
  43 
  ; 
  median 
  length 
  of 
  nasals, 
  12 
  ; 
  length 
  of 
  upper 
  molar 
  series, 
  

   21 
  ; 
  length 
  of 
  mandible, 
  62 
  ; 
  length 
  of 
  lower 
  molar 
  series, 
  25. 
  

  

  Undoubtedly 
  the 
  delicate 
  yellows 
  of 
  the 
  above 
  described 
  example 
  

   have 
  all 
  faded 
  from 
  their 
  original 
  richer 
  hues, 
  even 
  that 
  on 
  the 
  hairs 
  of 
  

   the 
  back, 
  though 
  protected 
  in 
  a 
  great 
  measure 
  from 
  the 
  light 
  by 
  the 
  

   black 
  tips, 
  having 
  in 
  many 
  places 
  lost 
  the 
  golden 
  hue 
  and 
  become 
  a 
  pale 
  

   yellow. 
  The 
  specimen 
  is 
  a 
  young 
  animal, 
  in 
  ragged 
  pelage, 
  and 
  was 
  

   given 
  to 
  the 
  Museum 
  in 
  March 
  1810, 
  evidently 
  without 
  any 
  locality 
  

   attached, 
  for 
  the 
  only 
  country 
  associated 
  with 
  it, 
  is 
  the 
  statement 
  

   beneath 
  the 
  stand 
  "II 
  vient 
  sans 
  doute 
  de 
  Bresil." 
  

  

  What 
  has 
  become 
  of 
  E. 
  Geoffroy's 
  type 
  is 
  not 
  known. 
  

  

  With 
  specimens 
  of 
  C. 
  variegatus, 
  and 
  type 
  of 
  C. 
  crassiceps 
  

   before 
  me 
  it 
  is 
  effectually 
  demonstrated 
  that 
  Schlegel 
  was 
  wrong 
  in 
  

   making 
  the 
  latter 
  a 
  synonym 
  of 
  the 
  former, 
  (Simiae, 
  p. 
  209), 
  for 
  they 
  

   are 
  totally 
  dissimilar, 
  having 
  an 
  entirely 
  different 
  style 
  of 
  coloring, 
  and 
  

   crassiceps 
  has 
  prominent 
  tufts 
  on 
  the 
  head. 
  Making 
  all 
  allowance 
  for 
  

   possible 
  variations, 
  which 
  are 
  well 
  known 
  to 
  occur 
  in 
  members 
  of 
  the 
  

   different 
  species 
  of 
  this 
  genus, 
  it 
  is 
  hardly 
  to 
  be 
  conceived 
  that 
  these 
  

   two 
  examples 
  represent 
  the 
  same 
  species; 
  for 
  if 
  they 
  do, 
  we 
  might 
  

   just 
  as 
  well 
  place 
  all 
  these 
  monkeys 
  under 
  one 
  name 
  and 
  give 
  up 
  all 
  

   further 
  attempts 
  to 
  separate 
  them 
  into 
  various 
  distinct 
  forms. 
  

  

  This 
  is 
  an 
  exceedingly 
  variable 
  species, 
  the 
  specimen 
  described 
  

   being 
  as 
  near 
  the 
  typical 
  style 
  is 
  it 
  seems 
  possible 
  to 
  reach. 
  The 
  types 
  of 
  

   C. 
  subcristatus 
  Gray, 
  and 
  C. 
  capillatus 
  Gray, 
  are 
  in 
  the 
  British 
  Museum 
  

   Collection. 
  They 
  are 
  immature 
  animals 
  without 
  localities, 
  the 
  first 
  

   having 
  been 
  obtained 
  from 
  Cross, 
  a 
  dealer 
  in 
  live 
  animals, 
  and 
  the 
  

   latter 
  from 
  the 
  Zoological 
  Society, 
  both 
  having 
  died 
  in 
  captivity. 
  The 
  

   character 
  given 
  to 
  separate 
  these 
  from 
  other 
  members 
  of 
  the 
  genus 
  

   was 
  chiefly 
  the 
  manner 
  of 
  growth 
  of 
  the 
  hairs 
  on 
  the 
  crown. 
  This 
  at 
  

   the 
  best 
  is 
  but 
  an 
  unsatisfactory 
  and 
  unreliable 
  character, 
  if 
  it 
  may 
  

   be 
  called 
  one 
  in 
  a 
  skin, 
  and 
  hardly 
  sufficient 
  to 
  establish 
  a 
  species. 
  The 
  

   hair 
  on 
  the 
  crown 
  of 
  C. 
  subcristatus 
  is 
  in 
  position 
  and 
  probably 
  exhibits 
  

   it 
  as 
  when 
  the 
  animal 
  was 
  alive, 
  but 
  that 
  of 
  C. 
  capillatus 
  is 
  much 
  

   mussed 
  and 
  it 
  cannot 
  well 
  be 
  determined 
  how 
  it 
  was 
  during 
  the 
  life 
  of 
  

   the 
  animal. 
  The 
  specimens 
  closely 
  resemble 
  each 
  other 
  in 
  color, 
  have 
  

  

  