﻿THE 
  SPIDER 
  MONKEYS 
  KELLOGG 
  AND 
  GOLDMAX 
  7 
  

  

  search 
  Council 
  in 
  the 
  hiboiiitorics 
  of 
  the 
  Division 
  of 
  Miimnials 
  luid 
  of 
  

   the 
  V. 
  S. 
  Fish 
  and 
  Wildlife 
  Service 
  in 
  the 
  United 
  States 
  National 
  

   Museum. 
  The 
  nuips 
  were 
  drawn 
  by 
  Mrs. 
  Kiithoryne 
  C. 
  Tubb, 
  of 
  the 
  

   Fis-h 
  and 
  Wildlife 
  Service. 
  This 
  review 
  is 
  inteniled 
  to 
  afford 
  a 
  work- 
  

   ing 
  knowledge 
  of 
  the 
  genus, 
  pending 
  more 
  exhaustive 
  revision 
  as 
  the 
  

   species 
  become 
  better 
  known. 
  

  

  KEY 
  TO 
  SPIDER 
  MONKEYS 
  (GENUS 
  ATELES) 
  ' 
  

  

  A. 
  Gi'iieral 
  coloration 
  of 
  entire 
  back 
  ehieflj' 
  black. 
  

  

  B. 
  Back 
  and 
  belly, 
  a.s 
  well 
  as 
  lin/bs 
  ami 
  tail, 
  wbolly 
  deep 
  glossy 
  black. 
  

  

  C. 
  Hairs 
  on 
  bead 
  wholly 
  black 
  (except 
  for 
  short, 
  white 
  mustache 
  whiskers 
  

  

  on 
  upi)er 
  lip 
  and 
  sparse, 
  short, 
  white 
  chin 
  whiskers) 
  ; 
  pelage 
  deep 
  glossy 
  

  

  black. 
  

  

  D. 
  Foot 
  rather 
  larj^e 
  (length, 
  hi^l 
  to 
  end 
  of 
  longest 
  toe, 
  190-220 
  mm.). 
  

  

  E. 
  Tail 
  normally 
  bushy 
  in 
  adult 
  (especially 
  on 
  upper 
  ba.sal 
  half, 
  longest 
  

  

  hail's 
  on 
  upperside 
  .50-100 
  nun. 
  in 
  length) 
  ; 
  face 
  normally 
  flesh 
  color, 
  

  

  occasionally 
  freckled 
  or 
  black; 
  hairs 
  on 
  back 
  silky, 
  lax, 
  and 
  long 
  

  

  (majority 
  of 
  hairs 
  on 
  midline 
  of 
  back 
  75-150 
  mm. 
  in 
  length) 
  ; 
  tail 
  

  

  often 
  more 
  than 
  twice 
  length 
  of 
  head 
  and 
  body. 
  (North 
  bank 
  of 
  

  

  Amazon 
  east 
  of 
  Manfios 
  and 
  north 
  to 
  Caribbean 
  coast 
  of 
  Guianas. 
  ) 
  

  

  paniscus 
  

   EE. 
  Tail 
  much 
  less 
  bushy 
  but 
  more 
  densely 
  furred 
  in 
  adult 
  (longest 
  

   hairs 
  on 
  upi>erside 
  4(M');j 
  mm. 
  in 
  length); 
  face 
  wholly 
  black; 
  

   hairs 
  on 
  back 
  .shorter 
  (majority 
  of 
  hairs 
  on 
  midline 
  of 
  back 
  

   75 
  nrm. 
  or 
  less) 
  ; 
  tail 
  often 
  more 
  than 
  twice 
  length 
  of 
  head 
  and 
  

   bod 
  J'. 
  (Western 
  Mat 
  to 
  Gros.so, 
  eastern 
  Bolivia, 
  and 
  north- 
  

   eastern 
  Peru 
  to 
  Rio 
  Solimoes 
  and 
  Rio 
  Jurua, 
  Brazil.) 
  chamek 
  

  

  DD. 
  Foot 
  smaller 
  (length, 
  heel 
  to 
  end 
  longest 
  toe, 
  100-170 
  mm.) 
  ; 
  tail 
  not 
  

   noticeably 
  bu.shy 
  (the 
  longest 
  hairs 
  on 
  upperside 
  30-50 
  mm. 
  in 
  

   length) 
  ; 
  face 
  wholly 
  black, 
  except 
  for 
  short, 
  white 
  nuistache 
  

   whiskers 
  on 
  upper 
  lip 
  and 
  sparse, 
  short, 
  white 
  chin 
  whiskers; 
  

   hairs 
  on 
  back 
  harsh 
  and 
  of 
  medium 
  length 
  (majority 
  of 
  hairs 
  on 
  

   midline 
  of 
  back 
  40-70 
  mm. 
  in 
  length) 
  ; 
  tail 
  variable 
  in 
  length, 
  

   occasionally 
  nearly 
  twice 
  as 
  long 
  as 
  head 
  and 
  body. 
  (Serranfa 
  del 
  

  

  Darien, 
  Panama, 
  to 
  .southwestern 
  Colombia.) 
  robustus 
  

  

  CC. 
  Hairs 
  on 
  head 
  not 
  wholly 
  black; 
  semilunar 
  forehead 
  patch 
  and 
  side 
  

   whi.skers 
  on 
  face 
  white; 
  remainder 
  of 
  body, 
  lind)S, 
  and 
  tail 
  deep 
  

   glo.ssy 
  black; 
  foot 
  nre<lium 
  (length, 
  heel 
  to 
  end 
  longest 
  toe, 
  170-185 
  

   mm.) 
  ; 
  tail 
  vari;d»le 
  in 
  length, 
  occasionally 
  more 
  than 
  twice 
  as 
  long 
  

   as 
  head 
  and 
  body. 
  (Slate 
  of 
  Parfi. 
  Brazil, 
  .south 
  of 
  Amazon, 
  between 
  

  

  Rios 
  TajiajTiz 
  and 
  Tocatitlns. 
  ) 
  marginatus 
  

  

  JiB. 
  liack 
  and 
  belly, 
  as 
  well 
  as 
  limbs 
  and 
  tall, 
  not 
  wholly 
  deep 
  glossy 
  black; 
  

   hairs 
  on 
  back 
  black 
  at 
  hnsi', 
  and 
  either 
  black 
  dislaliy 
  or 
  with 
  lii>s 
  

   tinged 
  with 
  either 
  burnt 
  umlter 
  or 
  seal 
  brown. 
  

   F. 
  Crown 
  cap 
  tawny-oUve, 
  yellowish 
  wood 
  brown, 
  oi- 
  willi 
  black 
  hairs 
  lipped 
  

   with 
  burnt 
  umber; 
  tuiderparts 
  similar 
  in 
  color 
  to 
  \ipjH'riiarts; 
  entire 
  

   body, 
  Including 
  limb.s 
  and 
  tail, 
  covered 
  with 
  black 
  hairs 
  tinged 
  dislaliy 
  

   with 
  burnt 
  umber; 
  foot 
  small 
  (leiiglli. 
  heel 
  to 
  end 
  longest 
  toe, 
  l.'.O-170 
  

   mm.) 
  ; 
  tail 
  variable 
  in 
  length, 
  usually 
  one-flfth 
  or 
  more 
  longer 
  lh:in 
  

   head 
  and 
  body. 
  (Pacific 
  side 
  of 
  cordlllera 
  of 
  Ecuador.) 
  fusciceps 
  

  

  ' 
  ('..lors 
  niffitlono*! 
  In 
  thU 
  kpy 
  are 
  nhown 
  In 
  Ilotjort 
  RIdKwny'fl 
  'Tolor 
  SlandnrdH 
  nnd 
  

   Color 
  Nomenclature," 
  4.3 
  pp.. 
  r.3 
  pig. 
  WuHliinKton, 
  1012. 
  

  

  