﻿AOTUS 
  17 
  

  

  band 
  reddish 
  brown 
  ; 
  outer 
  side 
  of 
  arms 
  and 
  legs 
  dark 
  brownish 
  gray 
  ; 
  

   under 
  parts 
  ochraceous 
  buff 
  ; 
  inner 
  side 
  of 
  arms 
  buffy 
  gray 
  ; 
  legs 
  gray- 
  

   ish 
  buff, 
  more 
  yellow 
  than 
  arms; 
  hands 
  dark 
  grayish, 
  feet 
  yellowish 
  

   brown; 
  tail 
  at 
  base 
  reddish 
  brown, 
  remainder 
  black; 
  sometimes 
  the 
  

   base 
  of 
  tail 
  is 
  tawny 
  ochraceous. 
  

  

  Measurements. 
  Total 
  length, 
  605; 
  tail, 
  330; 
  hind 
  foot, 
  85; 
  ear, 
  

   25, 
  (Collector). 
  Skull: 
  occipito-nasal 
  length, 
  60; 
  Hensel, 
  40; 
  inter- 
  

   temporal 
  width, 
  32; 
  zygomatic 
  width, 
  40; 
  palatal 
  length, 
  17; 
  breadth 
  

   of 
  braincase, 
  33 
  ; 
  median 
  length 
  of 
  nasals, 
  10 
  ; 
  length 
  of 
  upper 
  molar 
  

   series, 
  13; 
  length 
  of 
  mandible, 
  40; 
  length 
  of 
  lower 
  molar 
  series, 
  15. 
  

  

  Aotus 
  oseryi 
  (I. 
  Geoff 
  roy 
  et 
  Deville). 
  

  

  Nyctipithecus 
  oseryi 
  I. 
  Geoff, 
  et 
  Deville, 
  Compt. 
  Rend., 
  XXVII, 
  

   1848, 
  p. 
  498; 
  I. 
  Geoff., 
  Cat. 
  Primates, 
  1851, 
  p. 
  39; 
  Casteln, 
  

   Exped. 
  Amer. 
  Sud, 
  Mamm., 
  1855, 
  p. 
  15, 
  pi. 
  II; 
  Wagn., 
  

   Schreb., 
  Saugth. 
  SuppL, 
  1855, 
  p. 
  106; 
  Dahlb., 
  Stud. 
  Zool. 
  

   Fam. 
  Reg. 
  Anim. 
  Nat., 
  fasc. 
  I, 
  1856, 
  pp 
  148, 
  149; 
  Reichenb., 
  

   Vollstand. 
  Naturg. 
  Affen, 
  1862, 
  p. 
  18 
  ; 
  Bartl. 
  and 
  Sclat., 
  Proc. 
  

   Zool. 
  Soc. 
  Lond., 
  1871, 
  p. 
  220. 
  

   Type 
  locality. 
  "Haute 
  Amazone, 
  Perou." 
  

  

  Genl. 
  Char. 
  Three 
  stripes 
  on 
  head; 
  no 
  stripes 
  on 
  dorsal 
  region; 
  

   tail 
  long. 
  

  

  Color. 
  Central 
  stripe 
  from 
  forehead 
  to 
  occiput, 
  and 
  two 
  lateral 
  

   lines 
  from 
  occiput 
  to 
  eyes, 
  and 
  down 
  side 
  of 
  face 
  to 
  angle 
  of 
  mouth, 
  

   black; 
  yellowish 
  white 
  spot 
  over 
  eyes; 
  top 
  of 
  head 
  between 
  stripes 
  

   brownish 
  gray; 
  sides 
  of 
  head 
  yellowish 
  brown; 
  upper 
  parts 
  of 
  body 
  

   and 
  outer 
  side 
  of 
  limbs 
  pale 
  yellowish 
  brown, 
  dorsal 
  region 
  reddish; 
  

   under 
  parts 
  and 
  inner 
  side 
  of 
  limbs 
  yellowish 
  white, 
  probably 
  much 
  

   deeper 
  yellow 
  originally 
  ; 
  hands 
  and 
  feet 
  very 
  dark 
  brown 
  ; 
  face 
  bare 
  ; 
  

   tail 
  with 
  sides 
  on 
  basal 
  half 
  yellowish 
  or 
  pale 
  ochraceous 
  brown, 
  top 
  

   and 
  remaining 
  portion 
  to 
  tip, 
  blackish 
  brown. 
  Ex 
  type 
  Paris 
  Museum. 
  

   Measurements. 
  In 
  size 
  about 
  equal 
  to 
  A. 
  infulatus. 
  

  

  Two 
  specimens 
  of 
  this 
  form 
  are 
  in 
  the 
  Paris 
  Museum. 
  It 
  has 
  

   usually 
  been 
  classed 
  as 
  a 
  synonym 
  of 
  A. 
  infulatus, 
  or 
  as 
  the 
  young 
  

   of 
  that 
  species. 
  The 
  skull 
  of 
  A. 
  oseryi 
  is 
  in 
  the 
  mounted 
  type, 
  showing 
  

   the 
  teeth, 
  and 
  judging 
  from 
  what 
  can 
  be 
  seen 
  of 
  these, 
  the 
  specimen 
  

   would 
  seem 
  to 
  be 
  adult. 
  It 
  is 
  an 
  entirely 
  different 
  color 
  from 
  A. 
  

   infulatus, 
  and 
  the 
  three 
  black 
  stripes 
  on 
  the 
  head 
  are 
  clear 
  and 
  

   distinct, 
  going 
  to 
  the 
  occiput 
  which 
  is 
  not 
  the 
  case 
  in 
  A. 
  infulatus. 
  

   The 
  general 
  hue 
  is 
  a 
  yellowish 
  brown 
  mixed 
  with 
  gray. 
  The 
  animal 
  is 
  

  

  