﻿10 
  AOTUS 
  

  

  dorsal 
  region; 
  under 
  parts 
  yellowish 
  gray; 
  inner 
  side 
  of 
  limbs 
  gray; 
  

   hands 
  and 
  feet 
  reddish 
  brown 
  ; 
  tail, 
  basal 
  half 
  reddish 
  brown, 
  remain- 
  

   der 
  reddish 
  black. 
  Ex 
  type 
  British 
  Museum. 
  

  

  Measurements. 
  Total 
  length, 
  698; 
  tail, 
  280. 
  Skull: 
  occipito- 
  

   nasal 
  length, 
  52; 
  Hensel, 
  40; 
  zygomatic 
  width, 
  39; 
  intertemporal 
  

   width, 
  32; 
  palatal 
  length, 
  18; 
  width 
  of 
  braincase, 
  32; 
  median 
  length 
  

   of 
  nasals, 
  10; 
  length 
  of 
  upper 
  molar 
  series, 
  13. 
  Ex 
  type 
  British 
  

   Museum. 
  

  

  This 
  species 
  differs 
  from 
  all 
  the 
  rest 
  in 
  its 
  reddish 
  brown 
  hands 
  

   and 
  feet. 
  The 
  stripes 
  on 
  the 
  head 
  are 
  indistinct 
  when 
  compared 
  with 
  

   other 
  species, 
  and 
  are 
  very 
  narrow. 
  Doubtfully 
  from 
  Nicaragua. 
  

  

  Aotus 
  roberti 
  Dollman. 
  

  

  Aotus 
  roberti 
  Dollman, 
  Ann. 
  Mag. 
  Nat. 
  Hist., 
  IV, 
  8th 
  Ser., 
  1909, 
  

   p. 
  199. 
  

  

  ROBERT'S 
  DOUROUCOULL 
  

  

  Type 
  locality. 
  Matto 
  Grosso, 
  Brazil. 
  Type 
  in 
  British 
  Museum. 
  

  

  Color. 
  Face 
  black; 
  whitish 
  spot 
  over 
  eyes, 
  between 
  which 
  is 
  a 
  

   fan-shaped 
  black 
  mark; 
  brownish 
  black 
  line 
  from 
  corner 
  of 
  eye 
  extends 
  

   upwards 
  on 
  outer 
  side 
  of 
  the 
  white 
  spot, 
  and 
  then 
  outward 
  and 
  termi- 
  

   nates 
  on 
  side 
  of 
  the 
  crown; 
  occiput, 
  entire 
  upper 
  parts 
  of 
  body, 
  

   grizzled 
  buffy 
  gray, 
  the 
  hairs 
  being 
  banded 
  with 
  buff 
  and 
  black 
  and 
  

   tipped 
  with 
  white; 
  dorsal 
  line 
  from 
  middle 
  of 
  back, 
  and 
  rump 
  have 
  a 
  

   reddish 
  tinge 
  ; 
  upper 
  lip 
  and 
  chin 
  covered 
  with 
  short 
  white 
  hairs 
  ; 
  entire 
  

   under 
  parts 
  and 
  inner 
  side 
  of 
  limbs 
  ochraceous 
  buff; 
  hands 
  and 
  feet 
  

   reddish 
  brown 
  ; 
  tail 
  above 
  at 
  base 
  orange 
  red, 
  remainder 
  black, 
  beneath 
  

   red 
  grading 
  into 
  golden 
  on 
  basal 
  half, 
  rest 
  black. 
  Ex 
  type 
  British 
  

   Museum. 
  

  

  Measurements. 
  Total 
  length, 
  640; 
  tail, 
  260; 
  foot, 
  85. 
  Skull: 
  

   total 
  length, 
  64; 
  occipito-nasal 
  length, 
  57.6; 
  intertemporal 
  width, 
  31.7; 
  

   breadth 
  of 
  braincase, 
  33 
  ; 
  Hensel, 
  39 
  ; 
  zygomatic 
  width, 
  40.5 
  ; 
  median 
  

   length 
  of 
  nasals, 
  12.8; 
  palatal 
  length, 
  17; 
  length 
  of 
  upper 
  molar 
  series, 
  

   15. 
  Ex 
  type 
  British 
  Museum. 
  

  

  The 
  type 
  in 
  the 
  British 
  Museum 
  differs 
  chiefly 
  in 
  its 
  yellowish 
  

   gray 
  color, 
  and 
  in 
  having 
  the 
  lateral 
  stripes 
  on 
  the 
  head 
  not 
  encircling 
  

   the 
  white 
  spots 
  above 
  the 
  eyes, 
  but 
  continuing 
  backwards 
  on 
  side 
  of 
  

   crown 
  and 
  terminating 
  above 
  the 
  ears. 
  

  

  Aotus 
  miriquouina 
  (E. 
  Geoff 
  roy) 
  . 
  

  

  Pithecia 
  miriquouina 
  E. 
  Geoff., 
  Ann. 
  Mus. 
  Hist. 
  Nat. 
  Paris, 
  

   XIX, 
  1812, 
  p. 
  117; 
  Kuhl, 
  Beitr. 
  Zool., 
  1823, 
  p. 
  43. 
  

  

  