﻿LAGOTHRIX 
  57 
  

  

  Pelz., 
  Zool.-Bot. 
  Ges. 
  Wien, 
  1883, 
  Beiheft, 
  p. 
  7; 
  Schleg., 
  Mus. 
  

  

  Pays-Bas, 
  Simise, 
  1876, 
  p. 
  162, 
  (Part.). 
  

   Cebus 
  lagothrix 
  Fisch., 
  Syn. 
  Mamm., 
  1829, 
  p. 
  41. 
  

   Lagothrix 
  caparro 
  Less., 
  Spec. 
  Mamm., 
  1840. 
  p. 
  125. 
  

   Lagothrix 
  tschudi 
  Pucher., 
  Rev. 
  Mag. 
  Zool., 
  1857, 
  p. 
  296. 
  

   Lagothrix 
  olivacea 
  Bates, 
  Nat. 
  Riv. 
  Amaz., 
  II, 
  1863, 
  p. 
  320, 
  (nee 
  

  

  Spix). 
  

   Lagothrix 
  lagothrix 
  Forbes, 
  Handb. 
  Primates, 
  I, 
  1894, 
  p. 
  222, 
  pi. 
  

  

  XX. 
  

  

  HUMBOLDT'S 
  WOOLLY 
  MONKEY. 
  

  

  Type 
  locality. 
  Banks 
  of 
  the 
  Guaviare, 
  a 
  branch 
  of 
  the 
  Upper 
  

   Orinoco 
  River, 
  Brazil. 
  

  

  Geogr. 
  Distr. 
  River 
  Guaviare 
  and 
  the 
  Upper 
  Amazonian 
  region 
  

   in 
  the 
  district 
  lying 
  south-west 
  of 
  the 
  Rio 
  Negro, 
  and 
  in 
  the 
  Upper 
  

   Magdalena 
  Valley, 
  Colombia. 
  Chanchamayo, 
  Peru 
  (Kalinowski). 
  

   Specimen 
  in 
  British 
  Museum 
  Collection. 
  

  

  Color. 
  Head 
  to 
  nape 
  black; 
  hands 
  and 
  feet 
  and 
  under 
  parts 
  of 
  

   body 
  black; 
  upper 
  parts, 
  limbs 
  and 
  tail 
  blackish 
  hoary 
  gray; 
  some- 
  

   times 
  bluish 
  gray. 
  

  

  Measurements. 
  Skull: 
  occipito-nasal 
  length, 
  95 
  : 
  total 
  length, 
  110; 
  

   Hensel, 
  77 
  ; 
  zygomatic 
  width, 
  73 
  ; 
  intertemporal 
  width, 
  53 
  ; 
  breadth 
  of 
  

   braincase, 
  65 
  ; 
  palatal 
  length, 
  30 
  ; 
  median 
  length 
  of 
  nasals, 
  1 
  1 
  ; 
  length 
  

   of 
  upper 
  molar 
  series, 
  25; 
  length 
  of 
  mandible, 
  76; 
  length 
  of 
  lower 
  

   molar 
  series, 
  29. 
  

  

  The 
  type 
  of 
  L. 
  tschudi 
  Pucheran, 
  in 
  the 
  Paris 
  Museum 
  is 
  prac- 
  

   tically 
  in 
  all 
  respects 
  the 
  same 
  as 
  the 
  present 
  species. 
  It 
  is 
  lighter 
  in 
  

   color 
  on 
  back 
  and 
  tail 
  but 
  has 
  undoubtedly 
  faded, 
  and 
  also 
  the 
  animal 
  

   was 
  not 
  entirely 
  mature. 
  

  

  Bates 
  writing 
  on 
  the 
  species 
  of 
  Lagothrix 
  (1. 
  c.) 
  which 
  he 
  calls 
  

   'Barrigudo 
  Monkeys' 
  says, 
  "Of 
  the 
  remainder, 
  the 
  most 
  remarkable 
  

   is 
  the 
  Macaco 
  barrigudo, 
  or 
  big-bellied 
  monkey 
  of 
  the 
  Portuguese 
  

   Colonists, 
  a 
  species 
  of 
  Lagothrix. 
  The 
  genus 
  is 
  closely 
  allied 
  to 
  the 
  

   Coaitas, 
  (Ateles), 
  having, 
  like 
  them, 
  exceedingly 
  strong 
  and 
  flex- 
  

   ible 
  tails, 
  which 
  are 
  furnished 
  underneath 
  with 
  a 
  naked 
  palm 
  like 
  

   a 
  hand 
  for 
  grasping. 
  The 
  Barrigudos, 
  however, 
  are 
  very 
  bulky 
  ani- 
  

   mals, 
  whilst 
  the 
  Spider 
  monkeys 
  are 
  remarkable 
  for 
  the 
  slenderness 
  

   of 
  their 
  bodies 
  and 
  limbs. 
  I 
  obtained 
  specimens 
  of 
  what 
  have 
  been 
  

   considered 
  two 
  species, 
  one, 
  (G. 
  olivaceus 
  of 
  Spix?) 
  having 
  the 
  head 
  

   clothed 
  with 
  gray, 
  the 
  other, 
  (L. 
  Humboldtii) 
  with 
  black 
  fur. 
  They 
  

   both 
  live 
  together 
  in 
  the 
  same 
  places 
  and 
  are 
  probably 
  only 
  differently 
  

   colored 
  individuals 
  of 
  one 
  and 
  the 
  same 
  species. 
  I 
  sent 
  home 
  a 
  very 
  

  

  