﻿AOTUS 
  9 
  

  

  Genl. 
  Char. 
  General 
  color 
  of 
  head 
  brownish 
  gray; 
  lateral 
  black 
  

   lines 
  encircling 
  the 
  white 
  on 
  crown, 
  not 
  going 
  to 
  occiput 
  ; 
  two 
  thirds 
  of 
  

   tail 
  black 
  ; 
  first 
  upper 
  molar 
  largest 
  of 
  the 
  series. 
  

  

  Color. 
  Forehead 
  white 
  divided 
  in 
  center 
  by 
  a 
  fan 
  shaped 
  black 
  

   line, 
  and 
  encircled 
  by 
  another 
  black 
  line 
  commencing 
  at 
  corner 
  of 
  

   eyes 
  ; 
  space 
  beneath 
  eyes 
  covered 
  with 
  white 
  hairs 
  ; 
  head 
  behind 
  black 
  

   line 
  brownish 
  gray 
  ; 
  back 
  of 
  neck, 
  and 
  upper 
  parts 
  of 
  body 
  and 
  flanks 
  

   brownish 
  gray 
  ; 
  flanks 
  grizzled 
  gray 
  ; 
  dorsal 
  line 
  darkest 
  and 
  reddest 
  : 
  

   outer 
  side 
  of 
  limbs 
  grizzled 
  gray 
  ; 
  under 
  parts 
  of 
  body 
  and 
  inner 
  side 
  of 
  

   limbs 
  pale 
  orange 
  buff; 
  hands 
  and 
  feet 
  grizzled 
  gray; 
  tail 
  above 
  and 
  

   beneath 
  orange 
  rufous 
  at 
  base, 
  remainder 
  black. 
  Ex 
  type 
  British 
  

   Museum. 
  

  

  Measurements. 
  Total 
  length, 
  750; 
  tail, 
  430; 
  foot, 
  90. 
  Skull: 
  

   total 
  length, 
  65 
  ; 
  occipito-nasal 
  length, 
  60.3 
  ; 
  intertemporal 
  width, 
  33.5 
  ; 
  

   width 
  of 
  braincase, 
  33.6 
  ; 
  Hensel, 
  39.2 
  ; 
  zygomatic 
  width, 
  36.6 
  ; 
  median 
  

   length 
  of 
  nasals, 
  13.7 
  ; 
  palatal 
  length, 
  17 
  ; 
  length 
  of 
  upper 
  molar 
  series, 
  

   15; 
  length 
  of 
  mandible, 
  37.6; 
  length 
  of 
  lower 
  molar 
  series, 
  16.9. 
  Ex 
  

   type 
  British 
  Museum. 
  

  

  In 
  the 
  head 
  markings 
  this 
  species 
  is 
  similar 
  to 
  A. 
  boliviensis 
  from 
  

   Sara 
  Province, 
  Central 
  Bolivia, 
  but 
  is 
  much 
  darker 
  and 
  more 
  gray, 
  and 
  

   has 
  the 
  tail 
  black 
  for 
  the 
  greater 
  part 
  of 
  its 
  length 
  ; 
  the 
  cranial 
  charac- 
  

   ters 
  are 
  different, 
  and 
  the 
  orbits 
  much 
  smaller, 
  the 
  nasals 
  narrower; 
  

   palate 
  longer 
  and 
  narrower. 
  

  

  Aotus 
  rufipes 
  (Sclater). 
  

  

  Nyctipithecus 
  ruiipes 
  Sclat., 
  Proc. 
  Zool. 
  Soc. 
  Lond., 
  1872, 
  p. 
  3, 
  

   pi. 
  I; 
  Alston, 
  Biol. 
  Amer. 
  Central., 
  I, 
  Mamm., 
  1879, 
  p. 
  15; 
  

   Forbes, 
  Handb. 
  Primates, 
  I, 
  1894, 
  p. 
  169, 
  pi. 
  XV. 
  

  

  Aotus 
  ruiipes 
  Elliot, 
  Mamm. 
  Middle 
  Amer. 
  and 
  W. 
  Indies, 
  

   F. 
  C. 
  M. 
  Pub., 
  VI, 
  Pt. 
  II, 
  1904, 
  p. 
  726, 
  (Aotus 
  miriquo- 
  

   uina), 
  figs. 
  165, 
  CXXXIX, 
  Zool. 
  Ser.; 
  Id. 
  Check-L. 
  Mamm. 
  

   N. 
  Amer. 
  Cont. 
  and 
  W. 
  Indies, 
  F. 
  C. 
  M. 
  Pub., 
  VII, 
  1905, 
  p. 
  

   533, 
  Zool. 
  Ser. 
  

  

  RED-FOOTED 
  DOUROUCOULI. 
  

  

  Type 
  locality. 
  Nicaragua? 
  Type 
  in 
  British 
  Museum. 
  

  

  Geogr. 
  Distr. 
  Nicaragua? 
  Central 
  America. 
  

  

  Genl. 
  Char. 
  Triangular 
  white 
  patch 
  over 
  each 
  eye; 
  ears 
  large, 
  

   prominent, 
  nearly 
  naked 
  ; 
  hands 
  and 
  feet 
  rufous. 
  

  

  Color. 
  Triangular 
  white 
  patch 
  over 
  each 
  eye; 
  three 
  indistinct 
  

   black 
  lines 
  on 
  head 
  from 
  forehead 
  and 
  corner 
  of 
  eyes 
  to 
  crown 
  ; 
  upper 
  

   parts 
  of 
  body 
  and 
  outer 
  side 
  of 
  limbs 
  gray, 
  tinged 
  with 
  reddish 
  on 
  

  

  