﻿LAG0THR1X 
  53 
  

  

  GENUS 
  LAGOTHRIX. 
  WOOLLY 
  MONKEYS. 
  

  

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  ?t? 
  O 
  M 
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  *Z? 
  TV/T 
  ft? 
  — 
  A 
  

  

  i. 
  2—2 
  > 
  *"• 
  1— 
  1> 
  "• 
  3— 
  3J 
  -M-. 
  3 
  _ 
  3 
  — 
  3°- 
  

  

  LAGOTHRIX 
  E. 
  Geoff., 
  Ann. 
  Mus. 
  Hist. 
  Nat. 
  Paris, 
  XIX, 
  1812, 
  p. 
  

   106. 
  Type 
  Lagothrix 
  cana 
  E. 
  Geoffroy. 
  

   Gastrimargus 
  Spix, 
  Sim. 
  et 
  Vespert. 
  Bras., 
  1823, 
  p. 
  39, 
  pis. 
  

   XXVIII, 
  XXIX. 
  

  

  Head 
  round 
  ; 
  body 
  heavy 
  ; 
  tail 
  long, 
  prehensile 
  ; 
  limbs 
  of 
  moderate 
  

   length, 
  with 
  thumb 
  and 
  great 
  toe 
  well 
  developed, 
  having 
  the 
  nails 
  of 
  

   fingers 
  and 
  toes 
  flat 
  and 
  pointed; 
  fur 
  woolly. 
  Skull: 
  an 
  articulation 
  

   exists 
  between 
  the 
  premaxillaries 
  and 
  nasals 
  at 
  a 
  right 
  angle 
  to 
  their 
  

   suture. 
  Incisors 
  small, 
  upper 
  incisors 
  the 
  largest 
  ; 
  canines 
  large 
  with 
  

   a 
  frontal 
  groove. 
  

  

  The 
  species 
  of 
  this 
  genus 
  have 
  a 
  round 
  head 
  covered 
  with 
  thick, 
  

   short 
  hairs, 
  and 
  with 
  the 
  black 
  face 
  are 
  not 
  unlike 
  the 
  negro 
  in 
  

   appearance. 
  The 
  under 
  fur 
  is 
  very 
  woolly 
  in 
  texture, 
  and 
  this 
  

   character 
  helped 
  in 
  the 
  definition 
  of 
  the 
  name 
  bestowed 
  by 
  Humboldt 
  

   upon 
  the 
  first 
  specimen 
  he 
  procured, 
  lagotricha. 
  The 
  genus 
  has 
  but 
  

   few 
  species, 
  characterized 
  by 
  a 
  thickly 
  built 
  heavy 
  body, 
  with 
  limbs 
  

   moderately 
  lengthened, 
  a 
  well 
  developed 
  thumb 
  and 
  great 
  toe, 
  with 
  

   compressed 
  and 
  pointed 
  nails. 
  The 
  animals 
  are 
  gregarious, 
  slow 
  in 
  

   movement, 
  arboreal, 
  and 
  of 
  a 
  mild 
  and 
  tractable 
  disposition. 
  

  

  LITERATURE 
  OF 
  THE 
  SPECIES. 
  

  

  1811. 
  Humboldt 
  and 
  Bonpland, 
  Recueil 
  d' 
  Observations 
  de 
  Zoologie 
  

   (1815) 
  et 
  d'Anatomie 
  Comparee. 
  

  

  Lagothrix 
  lagotricha 
  first 
  described 
  as 
  Simla 
  lagotricha. 
  

  

  1812. 
  E. 
  Geoffroy 
  Saint-Hilaire, 
  in 
  Annales 
  du 
  Museum 
  d'Histoire 
  

   Naturelle, 
  Paris. 
  

  

  Lagothrix 
  cana, 
  young 
  male, 
  first 
  described; 
  and 
  L. 
  lago- 
  

   tricha 
  redescribed 
  as 
  *L. 
  humboldti. 
  

  

  *E. 
  Geoffroy 
  in 
  this 
  instance 
  gives 
  as 
  the 
  sole 
  synonym 
  of 
  his 
  Lagothrix 
  

   humfioldti 
  the 
  "Caparro 
  Humb. 
  Rec. 
  d'Obser. 
  p. 
  321," 
  showing 
  evidently 
  that 
  

   he 
  had 
  seen 
  either 
  the 
  MS. 
  or 
  the 
  published 
  work, 
  probably 
  the 
  first, 
  as 
  Humboldt 
  

   in 
  his 
  article 
  had 
  given 
  a 
  Latin 
  name 
  to 
  the 
  species, 
  and 
  which 
  in 
  this 
  case 
  I 
  

   prefer 
  to 
  retain. 
  

  

  