﻿AOTUS 
  11 
  

  

  Simla 
  (Pithecia) 
  azarce 
  Humb., 
  Obs. 
  Zool., 
  1811, 
  (1815), 
  p. 
  359. 
  

   Nyctipithecus 
  azarce 
  Schleg., 
  Mus. 
  Pays-Bas, 
  Simiae, 
  1876, 
  p. 
  212, 
  

  

  (nee 
  Synon) 
  ; 
  von 
  Pelz., 
  Kaiserl. 
  Konigl. 
  Zool.-botanisch. 
  

  

  Gesel. 
  Wien, 
  1883, 
  XXXIII, 
  p. 
  18; 
  Forbes, 
  Handb. 
  Primates, 
  

  

  I, 
  1894, 
  p. 
  170. 
  

   Nyctipithecus 
  trivirgatus 
  Rengg., 
  Naturg. 
  Saugth. 
  Paraguay, 
  

  

  1830, 
  p. 
  58, 
  (nee 
  Humb.). 
  

   Aotus 
  azarce 
  Thos., 
  Proc. 
  Zool. 
  Soc. 
  Lond., 
  1903, 
  p. 
  234. 
  

  

  AZARA'S 
  DOUROUCOUL1. 
  

  

  Type 
  locality. 
  Right 
  bank 
  of 
  the 
  River 
  Paraguay, 
  north-eastern 
  

   part 
  of 
  the 
  Argentine 
  Republic. 
  

  

  Geogr. 
  Distr. 
  Argentine 
  Republic. 
  

  

  Genl. 
  Char. 
  Large 
  black 
  patch 
  between 
  the 
  superciliary 
  spots. 
  

  

  Color. 
  A 
  white 
  spot 
  over 
  each 
  eye, 
  extending 
  backward 
  in 
  a 
  

   narrow 
  line 
  to 
  crown, 
  and 
  separating 
  the 
  central 
  black 
  spot 
  from 
  the 
  

   black 
  lateral 
  lines, 
  which 
  extend 
  from 
  the 
  angles 
  of 
  the 
  mouth 
  to 
  the 
  

   crown 
  on 
  each 
  side 
  of 
  the 
  head; 
  entire 
  upper 
  parts 
  iron 
  gray, 
  outer 
  

   side 
  of 
  limbs 
  iron 
  gray 
  like 
  upper 
  parts; 
  under 
  parts 
  and 
  inner 
  side 
  

   of 
  limbs 
  ochraceous 
  bufT; 
  hands 
  reddish 
  brown, 
  feet 
  washed 
  with 
  

   gray; 
  tail 
  at 
  base 
  ochraceous 
  rufous, 
  hairs 
  black 
  tipped, 
  remainder 
  

   black. 
  

  

  Measurements. 
  Skull 
  : 
  occipito-nasal 
  length, 
  57 
  : 
  zygomatic 
  width, 
  

   40.8; 
  intertemporal 
  width, 
  31.2; 
  palatal 
  length, 
  14.5; 
  breadth 
  of 
  brain- 
  

   case, 
  35; 
  median 
  length 
  of 
  nasals, 
  11.7; 
  length 
  of 
  upper 
  molar 
  series, 
  

   13.3 
  ; 
  length 
  of 
  mandible, 
  40; 
  length 
  of 
  lower 
  molar 
  series, 
  15.3. 
  

  

  Aotus 
  boliyiensis 
  Elliot. 
  

  

  Aotus 
  boliviensis 
  Elliot, 
  Ann. 
  Mag. 
  Nat. 
  Hist., 
  XX, 
  1907, 
  7th 
  Ser., 
  

   p. 
  189. 
  

  

  Type 
  locality. 
  Province 
  of 
  Sara, 
  Central 
  Bolivia. 
  Type 
  in 
  British 
  

   Museum. 
  

  

  Genl. 
  Char. 
  Similar 
  in 
  color 
  to 
  A. 
  miriquouina, 
  but 
  black 
  on 
  

   occiput 
  and 
  the 
  cranial 
  characters 
  different. 
  Orbits 
  wider 
  and 
  higher 
  ; 
  

   orbital 
  portion 
  of 
  frontal 
  bulging 
  outward 
  forming 
  a 
  decided 
  curve 
  

   from 
  the 
  frontal 
  to 
  the 
  nasals; 
  the 
  nasals 
  are 
  longer 
  and 
  wider; 
  

   braincase 
  longer 
  and 
  narrower 
  posteriorly; 
  extreme 
  width 
  across 
  

   orbits 
  much 
  greater 
  ; 
  interior 
  outline 
  of 
  skull 
  much 
  less 
  curved 
  ; 
  angle 
  

   of 
  occipital 
  region 
  much 
  less 
  ; 
  teeth 
  larger, 
  particularly 
  the 
  last 
  upper 
  

   molar; 
  space 
  from 
  posterior 
  edge 
  of 
  foramen 
  magnum 
  to 
  interparietal 
  

   much 
  greater 
  ; 
  basioccipital 
  between 
  bullae 
  much 
  wider. 
  

  

  Color. 
  Male 
  similar 
  to 
  A. 
  miriquouina 
  but 
  more 
  tinged 
  with 
  red 
  

  

  