﻿12 
  AOTUS 
  

  

  on 
  upper 
  parts. 
  A 
  white 
  spot 
  over 
  each 
  eye 
  extending 
  back 
  upon 
  the 
  

   head 
  ; 
  a 
  broad 
  black 
  line 
  on 
  middle 
  of 
  forehead 
  from 
  nose 
  to 
  between 
  

   ears, 
  and 
  a 
  narrow 
  black 
  line 
  from 
  corner 
  of 
  eye 
  on 
  each 
  side 
  of 
  the 
  

   head 
  bordering 
  the 
  white; 
  upper 
  parts 
  mixed 
  iron 
  gray 
  and 
  russet 
  

   becoming 
  more 
  brownish 
  on 
  lower 
  back 
  ; 
  cheeks 
  and 
  chin 
  white, 
  sides 
  

   yellowish 
  brown 
  ; 
  outer 
  side 
  of 
  limbs 
  iron 
  gray, 
  sometimes 
  tinged 
  with 
  

   yellowish 
  brown; 
  inner 
  side 
  of 
  limbs 
  and 
  under 
  parts 
  pale 
  orange 
  

   ochraceous 
  ; 
  hands 
  and 
  feet 
  dark 
  grayish 
  brown 
  ; 
  tail 
  mixed 
  ochraceous 
  

   rufous 
  and 
  black 
  on 
  basal 
  half, 
  remainder 
  black. 
  The 
  hairs 
  of 
  tail 
  

   are 
  all 
  ochraceous 
  rufous 
  at 
  base 
  and 
  this 
  shows 
  more 
  or 
  less 
  through- 
  

   out 
  the 
  entire 
  length. 
  

  

  Measurements. 
  Total 
  length, 
  720; 
  tail, 
  400; 
  foot, 
  100; 
  ear, 
  35. 
  

   Skull: 
  total 
  length, 
  64; 
  occipito-nasal 
  length, 
  61.5; 
  Hensel, 
  44; 
  zygo- 
  

   matic 
  width, 
  40.5; 
  intertemporal 
  width, 
  33; 
  extreme 
  width 
  of 
  orbits, 
  

   45; 
  height 
  of 
  orbits, 
  21 
  ; 
  median 
  length 
  of 
  nasals, 
  12; 
  width 
  of 
  brain- 
  

   case, 
  35 
  ; 
  distance 
  from 
  foramen 
  magnum 
  to 
  interparietal, 
  11 
  ; 
  width 
  of 
  

   basioccipital 
  between 
  bullae 
  anteriorly, 
  3.5; 
  length 
  of 
  upper 
  molar 
  

   series, 
  14 
  ; 
  length 
  of 
  mandible, 
  41 
  ; 
  length 
  of 
  lower 
  molar 
  series, 
  16. 
  

  

  While 
  similar 
  in 
  color 
  to 
  A. 
  miriquouina, 
  the 
  present 
  species 
  

   differs 
  greatly 
  in 
  its 
  cranial 
  characters. 
  The 
  skull 
  is 
  much 
  larger 
  and 
  

   the 
  braincase 
  considerably 
  longer, 
  while 
  the 
  orbits 
  are 
  enormous, 
  very 
  

   large 
  even 
  for 
  these 
  big 
  eyed 
  animals. 
  

  

  Two 
  specimens, 
  a 
  male 
  and 
  female 
  were 
  obtained 
  by 
  Mr. 
  T. 
  Stein- 
  

   bach 
  in 
  Central 
  Bolivia 
  and 
  are 
  now 
  in 
  the 
  collection 
  of 
  the 
  British 
  

   Museum. 
  There 
  was 
  no 
  difference 
  in 
  the 
  colors 
  of 
  the 
  sexes. 
  

  

  Aotus 
  lanius 
  Dollman. 
  

  

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

   p. 
  202 
  ; 
  Allen, 
  Bull. 
  Am. 
  Mus. 
  Nat. 
  Hist., 
  N. 
  Y., 
  XXXI, 
  1912, 
  

   p. 
  95. 
  

  

  WOOLLY 
  DOUROUCOULI. 
  

  

  Type 
  locality. 
  Tolima 
  Mountains; 
  Toche 
  River, 
  Central 
  Andes, 
  

   Colombia, 
  South 
  America. 
  Type 
  in 
  British 
  Museum. 
  

  

  Genl. 
  Char. 
  Fur 
  long, 
  thick, 
  soft, 
  woolly 
  ; 
  tail 
  bushy. 
  

  

  Color. 
  Spot 
  over 
  nose 
  fan-shaped, 
  black 
  ; 
  spot 
  over 
  each 
  eye 
  buff 
  

   extending 
  backward 
  in 
  a 
  narrow 
  circular 
  line 
  on 
  fore 
  part 
  of 
  head, 
  

   becoming 
  reddish 
  on 
  hind 
  part, 
  and 
  a 
  black 
  line 
  from 
  corner 
  of 
  eyes 
  

   encircling 
  the 
  buff 
  on 
  sides 
  of 
  head 
  but 
  not 
  extending 
  on 
  to 
  the 
  crown 
  ; 
  

   crown, 
  back 
  of 
  head, 
  neck 
  and 
  dorsal 
  region 
  to 
  rump 
  red, 
  hairs 
  tipped 
  

   with 
  golden; 
  flanks 
  and 
  outer 
  side 
  of 
  limbs 
  paler, 
  grizzled 
  brownish 
  

   red; 
  hairs 
  on 
  shoulders 
  and 
  limbs 
  tipped 
  with 
  white; 
  inner 
  side 
  of 
  

  

  