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  ATELEUS 
  

  

  siderable 
  cunning 
  in 
  pilfering 
  small 
  articles 
  of 
  clothing 
  which 
  it 
  conceals 
  

   in 
  its 
  sleeping 
  place. 
  

  

  Ateletjs 
  ater 
  F. 
  Cuvier. 
  

  

  Ateles 
  ( 
  !) 
  ater 
  F. 
  Cuv., 
  Hist. 
  Nat. 
  Mamm., 
  I, 
  1823, 
  Liv. 
  XXXIV, 
  

   2nd 
  ed., 
  1833, 
  p. 
  157, 
  pi. 
  LIII; 
  Less., 
  Spec. 
  Mamm., 
  1840, 
  

   p. 
  128; 
  I. 
  Geoff., 
  Cat. 
  Primates, 
  1851, 
  p. 
  48; 
  Wallace, 
  Proc. 
  

   Zool. 
  Soc. 
  Lond., 
  1852, 
  p. 
  108; 
  Wagn., 
  Schreb., 
  Saugth. 
  

   Suppl., 
  V, 
  1855, 
  p. 
  71, 
  pi. 
  XXXVI 
  A; 
  Dahlb., 
  Stud. 
  Zool. 
  

   Fam. 
  Reg. 
  Anim. 
  Natur., 
  fasc. 
  I, 
  1856, 
  pp. 
  171, 
  172; 
  

   Reichenb., 
  Vollstand. 
  Naturg. 
  Affen, 
  1862, 
  p. 
  59, 
  figs. 
  643, 
  

   644; 
  Gray, 
  Cat. 
  Monkeys, 
  Lemurs 
  and 
  Fruit-eating 
  Bats, 
  

   Brit. 
  Mus., 
  1870, 
  p. 
  42; 
  Bartl., 
  Proc. 
  Zool. 
  Soc. 
  Lond., 
  1871, 
  

   p. 
  218 
  ; 
  Sclat., 
  Proc. 
  Zool. 
  Soc. 
  Lond., 
  1872, 
  p. 
  5 
  ; 
  Schleg., 
  Mus. 
  

   Pays-Bas, 
  Simise, 
  1876, 
  p. 
  170; 
  Alston, 
  Biol. 
  Centr. 
  Amer., 
  I, 
  

   Mamm., 
  1879, 
  p. 
  7; 
  Anders., 
  Cat. 
  Mamm. 
  Ind. 
  Mus. 
  Calc, 
  

   1881, 
  p. 
  83 
  ; 
  Forbes, 
  Handb. 
  Primates, 
  I, 
  1894, 
  p. 
  241 
  ; 
  Elliot, 
  

   Mamm. 
  Middle 
  Amer. 
  and 
  West 
  Ind., 
  Pub. 
  Field 
  Columb. 
  

   Mus., 
  IV, 
  Pt. 
  II, 
  1904, 
  p. 
  734, 
  Zool. 
  Ser. 
  ; 
  Id. 
  Cat. 
  Mamm. 
  

   Field 
  Columb. 
  Mus., 
  VI, 
  1905, 
  Zool. 
  Ser. 
  ; 
  Allen, 
  Bull. 
  Am. 
  

   Mus. 
  Nat. 
  Hist., 
  N. 
  Y., 
  XXXI, 
  1912, 
  p. 
  95. 
  

  

  Cebus 
  ater 
  Fisch., 
  Syn. 
  Mamm., 
  1829, 
  p. 
  40. 
  

  

  Sapajou 
  ater 
  Slack, 
  Proc. 
  Acad. 
  Nat. 
  Scien. 
  Phil., 
  1862, 
  p. 
  510. 
  

  

  BLACK 
  SPIDER 
  MONKEY. 
  

  

  Type 
  locality. 
  Cayenne, 
  French 
  Guiana. 
  Type 
  in 
  Paris 
  Museum. 
  

  

  Geogr. 
  Distr. 
  Panama 
  ; 
  French 
  Guiana 
  ; 
  Rio 
  Sinu 
  Cerete, 
  Bolivar 
  ; 
  

   Colombia, 
  and 
  Eastern 
  Peru. 
  Banks 
  of 
  Rio 
  Ucayali, 
  Rio 
  Chamicurus 
  

   and 
  Rio 
  Huallaga, 
  (Bartlett). 
  

  

  Genl. 
  Char. 
  Face 
  black. 
  Thumb 
  absent. 
  

  

  Color. 
  Like 
  A. 
  paniscus, 
  entirely 
  black, 
  face 
  black. 
  

  

  Measurements. 
  Skull: 
  total 
  length, 
  119; 
  occipito-nasal 
  length, 
  

   102 
  ; 
  Hensel, 
  80 
  ; 
  zygomatic 
  width, 
  73 
  ; 
  intertemporal 
  width, 
  48 
  ; 
  palatal 
  

   length, 
  35; 
  breadth 
  of 
  braincase, 
  64; 
  median 
  length 
  of 
  nasals, 
  20; 
  

   length 
  of 
  upper 
  molar 
  series, 
  25 
  ; 
  length 
  of 
  mandible, 
  29.5 
  ; 
  length 
  of 
  

   lower 
  molar 
  series, 
  29. 
  

  

  The 
  only 
  difference 
  in 
  the 
  outward 
  appearance 
  between 
  A. 
  ater 
  

   and 
  A. 
  paniscus, 
  is 
  in 
  the 
  coloring 
  of 
  the 
  face, 
  that 
  of 
  the 
  present 
  

   species 
  being 
  all 
  black 
  while 
  that 
  of 
  A. 
  paniscus 
  is 
  flesh 
  colored. 
  

  

  Wallace 
  states 
  (1. 
  c.) 
  that, 
  "these 
  monkeys 
  are 
  slow 
  in 
  their 
  

   motions, 
  but 
  make 
  great 
  use 
  of 
  their 
  prehensile 
  tails, 
  by 
  which 
  they 
  

   swing 
  themselves 
  from 
  bough 
  to 
  bough 
  ; 
  and 
  I 
  have 
  been 
  informed 
  that 
  

  

  