﻿78 
  CEBUS 
  

  

  b!' 
  Crown 
  black, 
  cheeks 
  whitish. 
  

   a!" 
  Arms 
  to 
  elbows 
  white. 
  

  

  a. 
  4 
  Chest 
  white 
  C. 
  capucinus. 
  

  

  b. 
  4 
  Chest 
  black 
  C. 
  c. 
  nigripectus. 
  

  

  c" 
  Crown 
  black, 
  cheeks 
  pale 
  yellow 
  C. 
  frontatus. 
  

  

  d." 
  Crown 
  white 
  C. 
  albifrons. 
  

  

  e" 
  Crown 
  pale 
  brownish 
  yellow 
  tinged 
  

  

  with 
  reddish 
  C. 
  unicolor. 
  

  

  /." 
  Crown 
  dark 
  chestnut 
  C. 
  u. 
  cuscinus. 
  

  

  g" 
  Crown 
  golden 
  brown 
  C. 
  ftavus. 
  

  

  b. 
  Arms 
  with 
  yellow. 
  

  

  a.' 
  Arms 
  to 
  elbows, 
  and 
  shoulders 
  golden 
  

  

  yellow 
  , 
  C. 
  castaneus. 
  

  

  b! 
  Arms 
  to 
  elbows 
  yellowish 
  white 
  C. 
  variegatus. 
  

  

  c! 
  Arms 
  to 
  wrist 
  on 
  outer 
  side 
  pale 
  yellow. 
  

  

  a." 
  Upper 
  parts 
  mummy 
  brown 
  C. 
  malitiosus. 
  

  

  b." 
  Upper 
  parts 
  cinnamon 
  red 
  . 
  . 
  , 
  C. 
  chrysopus. 
  

  

  c." 
  Upper 
  parts 
  blackish 
  brown 
  C. 
  apiculatus. 
  

  

  B. 
  Heads 
  with 
  tufts 
  or 
  ridges 
  on 
  male. 
  

  

  a. 
  No 
  white 
  hairs 
  on 
  body. 
  

   a.' 
  Arms 
  with 
  yellow. 
  

  

  a." 
  Dorsal 
  region 
  dark 
  yellowish 
  brown. 
  . 
  C. 
  libidinosus. 
  

  

  b." 
  Dorsal 
  region 
  reddish 
  chestnut 
  C. 
  fatuellus. 
  

  

  c." 
  Dorsal 
  region 
  reddish 
  golden 
  

  

  brown 
  C. 
  macro 
  cephalus. 
  

  

  b! 
  Arms 
  without 
  yellow. 
  

  

  a" 
  Arms 
  to 
  elbows 
  cream 
  buff 
  C. 
  versuta. 
  

  

  b." 
  Arms 
  to 
  elbows 
  reddish 
  chestnut.. 
  C. 
  /. 
  peruanus. 
  

   c" 
  Arms 
  to 
  elbows 
  dark 
  Prout's 
  brown. 
  

  

  a!" 
  Black 
  cap 
  on 
  head 
  C. 
  azarce. 
  

  

  b!" 
  Black 
  cap 
  divided 
  nearly 
  into 
  two 
  . 
  C. 
  a. 
  pallidus. 
  

   d" 
  Arms 
  to 
  elbows 
  black. 
  

  

  a!" 
  Upper 
  parts 
  mummy 
  brown 
  C. 
  cirrifer. 
  

  

  b'" 
  Upper 
  parts 
  chestnut 
  red 
  C. 
  cmssiceps. 
  

  

  e." 
  Arms 
  to 
  elbows 
  golden 
  brown 
  tinged 
  

  

  with 
  red 
  C. 
  caliginosus. 
  

  

  b. 
  White 
  hairs 
  on 
  body 
  C. 
  vellerosus. 
  

  

  Cebus 
  apella 
  (Linnaeus). 
  

  

  Simla 
  apella 
  Linn., 
  Mus. 
  Reg. 
  Ad. 
  Fred., 
  1754, 
  Quad., 
  p. 
  3, 
  pi. 
  I; 
  

   Id. 
  Syst. 
  Nat, 
  I, 
  1758, 
  p. 
  28; 
  I, 
  1766, 
  p. 
  42; 
  Bodd., 
  Elench. 
  

  

  