﻿16 
  AOTUS 
  

  

  series, 
  13.5 
  ; 
  mandible, 
  35 
  ; 
  length 
  of 
  lower 
  molar 
  series, 
  15.3. 
  Ex 
  type 
  

   in 
  American 
  Museum 
  of 
  Natural 
  History 
  in 
  New 
  York. 
  

  

  This 
  species, 
  while 
  resembling 
  somewhat 
  A. 
  vociferans, 
  differs 
  

   in 
  being 
  darker 
  on 
  the 
  upper 
  parts 
  and 
  especially 
  in 
  the 
  gray 
  arms 
  

   and 
  legs, 
  the 
  hairs 
  buff 
  tipped 
  ; 
  and 
  the 
  black 
  lines 
  on 
  sides 
  of 
  the 
  head 
  

   go 
  to 
  the 
  occiput. 
  Two 
  examples 
  were 
  collected 
  by 
  Mr. 
  Carriker 
  in 
  

   the 
  mountains 
  near 
  the 
  coast 
  in 
  Santa 
  Marta; 
  and 
  two 
  from 
  the 
  Rio 
  

   Sinu 
  Cerete, 
  west 
  of 
  the 
  mountains, 
  Colombia, 
  collected 
  by 
  Mrs. 
  E. 
  

   L. 
  Kerr. 
  

  

  AOTUS 
  TRIVIRGATUS 
  (Humboldt) 
  . 
  

  

  Simla 
  {Aotus) 
  trivirgata 
  Humb., 
  Rec 
  Obser. 
  Zool., 
  I, 
  1811, 
  p. 
  28. 
  

  

  Aotus 
  trivirgatus 
  Illig., 
  Prodr. 
  Syst. 
  Mamm, 
  Av., 
  1811, 
  p. 
  71 
  ; 
  E. 
  

   Geoff., 
  Ann. 
  Mus. 
  Hist. 
  Nat. 
  Paris, 
  XIX, 
  1812, 
  p. 
  115. 
  

  

  Cebus 
  trivirgatus 
  Fisch., 
  Syn. 
  Mamm., 
  1829, 
  p. 
  55; 
  Blainv., 
  

   Osteog., 
  1841, 
  Atl., 
  Cebus, 
  pis. 
  Ill, 
  VI. 
  

  

  Nyctipithecus 
  trivirgatus 
  E. 
  Geoff., 
  Cours 
  Hist. 
  Nat. 
  Mamm., 
  

   1828, 
  p. 
  19, 
  lOme 
  Legon 
  ; 
  F. 
  Cuv., 
  Hist. 
  Nat. 
  Mamm., 
  2me 
  ed., 
  

   1833, 
  p. 
  166, 
  pi. 
  LXVIII 
  ; 
  Wagn., 
  Schreb., 
  Saugth. 
  Suppl., 
  I, 
  

   1840, 
  p. 
  226; 
  V, 
  1855, 
  p. 
  106; 
  I. 
  Geoff., 
  Archiv. 
  Mus. 
  Hist. 
  

   Nat. 
  Paris, 
  IV, 
  pp. 
  24, 
  28 
  ; 
  Gray, 
  Ann. 
  Mag. 
  Nat. 
  Hist., 
  X, 
  

   1st 
  Ser., 
  1842, 
  p. 
  256; 
  Id. 
  List 
  Spec. 
  Mamm. 
  Brit. 
  Mus., 
  1843, 
  

   p. 
  14; 
  Wagn., 
  Wiegm., 
  Archiv., 
  2nd 
  Part, 
  1843, 
  p. 
  21 
  ; 
  1846, 
  

   p. 
  136; 
  Reichenb., 
  Vollstand. 
  Naturg. 
  Affen, 
  1862, 
  p. 
  17, 
  figs. 
  

   47, 
  48; 
  Bates, 
  Nat. 
  River 
  Amaz., 
  1862, 
  p. 
  316; 
  Gray, 
  Cat. 
  

   Monkeys, 
  Lemurs 
  and 
  Fruit-eating 
  Bats, 
  Brit. 
  Mus., 
  1870, 
  

   p. 
  58; 
  Schleg., 
  Mus. 
  Pays-Bas, 
  Simiae, 
  1876, 
  p. 
  213; 
  Forbes, 
  

   Handb. 
  Primates, 
  I, 
  1894, 
  p. 
  168; 
  von 
  Pelz, 
  Kaiserl-Konigl. 
  

   Zool.-botanische 
  Gesellsch. 
  Wien, 
  XXXIII, 
  1883, 
  p. 
  18. 
  

  

  Nyctipithecus 
  douroucouli 
  Less., 
  Spec. 
  Mamm., 
  1840, 
  p. 
  169. 
  

  

  THREE-BANDED 
  DOUROUCOULI. 
  

  

  Type 
  locality. 
  Banks 
  of 
  the 
  Cassiquiare 
  near 
  the 
  headwaters 
  of 
  

   the 
  Rio 
  Negro. 
  

  

  Geogr. 
  Distr. 
  Guiana, 
  Upper 
  Amazon 
  region, 
  Brazil. 
  

  

  Genl. 
  Char. 
  Three 
  separate 
  distinct 
  black 
  streaks 
  on 
  head, 
  going 
  

   to 
  occiput. 
  Skull 
  narrowing 
  towards 
  occiput, 
  and 
  the 
  posterior 
  outline 
  

   of 
  braincase 
  rounded; 
  palate 
  wide, 
  narrowing 
  but 
  slightly 
  anteriorly 
  

   between 
  canines. 
  

  

  Color. 
  General 
  hue 
  dark 
  gray 
  with 
  a 
  silvery 
  lustre 
  caused 
  by 
  the 
  

   white 
  tips 
  of 
  the 
  hairs 
  ; 
  three 
  black 
  stripes 
  on 
  head 
  from 
  forehead 
  to 
  

   occiput; 
  spots 
  over 
  eyes 
  whitish, 
  sometimes 
  ochraceous 
  buff; 
  dorsal 
  

  

  