﻿LAGOTHRIX 
  61 
  

  

  p. 
  107; 
  Id. 
  Cours 
  Hist. 
  Nat. 
  Mamm, 
  1828, 
  p. 
  35, 
  9me 
  Legon; 
  

   Kuhl, 
  Beitr. 
  ZooL, 
  1820, 
  p. 
  27; 
  Desm., 
  Mamm, 
  1820, 
  p. 
  77; 
  

   Schinz, 
  Syn. 
  Mamm, 
  I, 
  1844, 
  p. 
  71 
  ; 
  I. 
  Geoff, 
  Cat. 
  Primates, 
  

   1851, 
  p. 
  50; 
  Pucher, 
  Rev. 
  Mag. 
  ZooL, 
  1857, 
  p. 
  39, 
  pi. 
  

   XXVIII; 
  Reichenb, 
  Vollstand. 
  Naturg. 
  Affen, 
  1862, 
  p. 
  72, 
  

   figs. 
  176, 
  177. 
  

   Gastrimargus 
  olivaceus 
  Spix, 
  Simiar. 
  et 
  Vespert. 
  Bras, 
  1823, 
  p. 
  

  

  29, 
  pi. 
  XXVIII. 
  

   Lagothrix 
  cana 
  Wagn, 
  Schreb, 
  Saugth. 
  Suppl, 
  I, 
  1840, 
  p. 
  186, 
  

  

  pi. 
  XXVI 
  E 
  ; 
  Schleg, 
  Mus. 
  Pays-Bas, 
  Simiae, 
  1876, 
  p. 
  162. 
  

   Lagothrix 
  olivacea 
  Wagn, 
  Schreb, 
  Saugth. 
  Suppl, 
  V, 
  1855, 
  p. 
  

  

  73. 
  

   Lagothrix 
  geoifroyi 
  Pucher, 
  Rev. 
  Mag. 
  Zool, 
  1857, 
  p. 
  296, 
  (nee 
  

  

  Schinz). 
  

   Type 
  locality. 
  "Probablement 
  le 
  Bresil." 
  

  

  Geogr. 
  Distr. 
  Mouth 
  of 
  the 
  Rio 
  Tocantins, 
  (Spix), 
  to 
  the 
  forests 
  

   along 
  the 
  Rio 
  Solimoens. 
  

  

  Genl. 
  Char. 
  Under 
  parts 
  ochraceous. 
  

  

  Color. 
  Narrow 
  line 
  on 
  forehead 
  and 
  sides, 
  buff 
  ; 
  top 
  of 
  head 
  and 
  

   nape 
  dark 
  brown 
  with 
  a 
  reddish 
  tinge; 
  back, 
  flanks 
  and 
  limbs, 
  buffy 
  

   gray 
  ; 
  forearms 
  and 
  legs 
  below 
  knees 
  darker 
  ; 
  inner 
  side 
  of 
  limbs 
  black- 
  

   ish; 
  hands 
  and 
  feet 
  blackish 
  brown; 
  throat 
  reddish 
  brown; 
  under 
  

   parts 
  ochraceous 
  ; 
  tail 
  above 
  dark 
  brown 
  on 
  basal 
  half, 
  remainder 
  gray 
  

   tinged 
  with 
  reddish, 
  beneath 
  dark 
  brown. 
  

  

  Measurements. 
  Smaller 
  than 
  the 
  other 
  members 
  of 
  the 
  genus. 
  

   Skull 
  : 
  occipito-nasal 
  length, 
  83 
  ; 
  Hensel, 
  68 
  ; 
  zygomatic 
  width, 
  60 
  ; 
  inter- 
  

   temporal 
  width, 
  48 
  ; 
  median 
  length 
  of 
  nasals, 
  9 
  ; 
  length 
  of 
  upper 
  molar 
  

   series, 
  19; 
  length 
  of 
  mandible, 
  64; 
  length 
  of 
  lower 
  molar 
  series, 
  30. 
  

  

  The 
  example 
  in 
  the 
  Paris 
  Museum 
  marked 
  as 
  Geoffroy's 
  type 
  

   was 
  obtained 
  from 
  the 
  'Cabinet 
  de 
  Lisbonne' 
  in 
  1809. 
  It 
  is 
  immature, 
  

   in 
  good 
  condition 
  though 
  somewhat 
  faded, 
  and 
  is 
  yellowish 
  gray 
  with 
  a 
  

   reddish 
  brown 
  head, 
  and 
  tail 
  and 
  limbs 
  like 
  the 
  body 
  but 
  darker. 
  Much 
  

   of 
  the 
  fur 
  has 
  fallen 
  from 
  the 
  chest 
  and 
  abdomen, 
  but 
  what 
  remains 
  is 
  

   a 
  dark 
  ochraceous 
  rufous, 
  and 
  there 
  is 
  no 
  evidence 
  of 
  any 
  black 
  color 
  

   having 
  been 
  present. 
  There 
  are 
  two 
  specimens 
  in 
  the 
  Museum, 
  adult 
  

   and 
  young, 
  the 
  latter 
  stated 
  to 
  have 
  come 
  from 
  Brazil. 
  

  

  The 
  type 
  of 
  Gastrimargus 
  olivaceus 
  Spix, 
  in 
  the 
  Munich 
  Museum 
  

   agrees 
  in 
  all 
  respects 
  with 
  Geoffroy's 
  type, 
  and 
  Spix's 
  name 
  must 
  

   become 
  a 
  synonym 
  of 
  L. 
  cana. 
  It 
  is 
  quite 
  different 
  both 
  in 
  color 
  and 
  

   texture 
  from 
  G. 
  infumatus 
  Spix. 
  A 
  young 
  individual 
  of 
  G. 
  olivaceus 
  

  

  