﻿32 
  ATELEUS 
  

  

  Province 
  of 
  Jean 
  de 
  Bracamorros, 
  Peru, 
  (Humboldt) 
  ; 
  Sierra 
  de 
  Cocoi, 
  

   Upper 
  Rio 
  Negro, 
  (Natterer) 
  ; 
  Upper 
  Cauca 
  River, 
  a 
  southern 
  tribu- 
  

   tary 
  of 
  the 
  Orinoco, 
  Venezuela, 
  (Gordon) 
  ; 
  Oyapock, 
  (Sclater). 
  

  

  Genl. 
  Char. 
  Hair 
  on 
  head 
  long, 
  directed 
  forward 
  over 
  the 
  

   forehead; 
  beneath 
  and 
  behind 
  cheeks 
  similar 
  long 
  hairs 
  directed 
  for- 
  

   ward; 
  face 
  naked. 
  

  

  Color. 
  Male. 
  Face 
  black; 
  top 
  of 
  head 
  and 
  neck, 
  upper 
  parts, 
  

   hands, 
  feet, 
  and 
  outer 
  side 
  of 
  arms 
  and 
  legs 
  black; 
  band 
  across 
  fore- 
  

   head 
  rufous, 
  bordered 
  by 
  a 
  narrow 
  black 
  line 
  ; 
  whiskers 
  from 
  temples 
  

   to 
  angle 
  of 
  mouth, 
  white 
  ; 
  inner 
  side 
  of 
  arms 
  and 
  legs, 
  and 
  under 
  parts, 
  

   orange 
  yellow 
  ; 
  tail 
  above 
  black, 
  beneath, 
  orange. 
  

  

  Female. 
  Like 
  the 
  male 
  on 
  upper 
  parts, 
  but 
  the 
  white 
  stripe 
  on 
  

   face 
  is 
  very 
  narrow; 
  many 
  black 
  hairs 
  on 
  the 
  outer 
  side 
  of 
  thighs; 
  

   inner 
  side 
  of 
  arms, 
  legs 
  below 
  the 
  knees, 
  and 
  entire 
  under 
  parts 
  

   grayish 
  yellow 
  ; 
  under 
  side 
  of 
  tail 
  pale 
  buff 
  yellow. 
  

  

  Measurements. 
  Skull: 
  total 
  length, 
  124; 
  occipito-nasal 
  length, 
  

   108; 
  Hensel, 
  89; 
  intertemporal 
  width, 
  52; 
  zygomatic 
  width, 
  76; 
  

   palatal 
  length, 
  32; 
  breadth 
  of 
  braincase, 
  66; 
  median 
  length 
  of 
  nasals, 
  

   17; 
  length 
  of 
  upper 
  molar 
  series, 
  24; 
  length 
  of 
  mandible, 
  78; 
  length 
  

   of 
  lower 
  molar 
  series, 
  30. 
  

  

  This 
  species 
  was 
  first 
  mentioned 
  by 
  Humboldt, 
  (1. 
  c.) 
  as 
  Le 
  Chuva 
  

   de 
  Bracamorros, 
  and 
  was 
  afterward 
  called 
  by 
  him 
  Ateles 
  ( 
  !) 
  mar- 
  

   ginatus, 
  a 
  name 
  given 
  by 
  E. 
  Geoffroy 
  St. 
  Hilaire 
  to 
  quite 
  another 
  

   species. 
  Wagner, 
  (1. 
  c.) 
  bestowed 
  upon 
  the 
  species 
  the 
  name 
  A. 
  

   variegatus 
  which 
  it 
  now 
  bears, 
  but 
  Schlegel 
  refused 
  to 
  accept 
  this 
  

   name 
  and 
  restored 
  that 
  of 
  Humboldt's 
  'Le 
  Chuva/ 
  a 
  merely 
  local 
  

   appellation, 
  which 
  Humboldt 
  clearly 
  showed 
  he 
  never 
  intended 
  should 
  

   be 
  considered 
  a 
  scientific 
  name, 
  by 
  adopting 
  for 
  it 
  afterward, 
  as 
  he 
  

   supposed, 
  Geoffroy's 
  name 
  as 
  stated 
  above. 
  A. 
  variegatus 
  is 
  readily 
  

   recognized 
  by 
  the 
  orange 
  yellow 
  of 
  the 
  under 
  parts, 
  and 
  the 
  rufous 
  

   band 
  on 
  the 
  forehead. 
  The 
  female 
  has 
  paler 
  under 
  parts 
  than 
  the 
  

   male, 
  grayish 
  yellow. 
  Slack 
  (1. 
  c.) 
  describes 
  the 
  male 
  of 
  this 
  species 
  

   as 
  A. 
  geoffroyi, 
  quite 
  a 
  different 
  animal, 
  but 
  his 
  female 
  is 
  A. 
  

  

  GEOFFROYI. 
  

  

  Mr. 
  E. 
  Bartlett, 
  (1. 
  c.) 
  in 
  his 
  account 
  of 
  this 
  species 
  says, 
  "on 
  my 
  

   arrival 
  in 
  Peru 
  in 
  1865, 
  Mr. 
  Hauxwell 
  told 
  me 
  of 
  the 
  existence 
  of 
  a 
  

   large 
  species 
  of 
  Ateles 
  ( 
  !) 
  which 
  he 
  had 
  killed 
  but 
  failed 
  to 
  preserve. 
  

   He 
  told 
  me 
  that 
  he 
  met 
  with 
  it 
  on 
  the 
  Rio 
  Tigri 
  a 
  small 
  tributary 
  that 
  

   runs 
  into 
  the 
  Amazon 
  about 
  four 
  miles 
  above 
  the 
  town 
  of 
  Nauta, 
  on 
  

   the 
  northwestern 
  shore 
  of 
  the 
  Peruvian 
  Amazon. 
  He 
  said 
  that 
  during 
  

  

  