﻿THE 
  SPIDER 
  MONKEYS 
  — 
  KELLOGG 
  AND 
  GOLDMAN 
  9 
  

  

  central 
  curdillera 
  of 
  Costa 
  Uiea 
  (lilo 
  I'iiris) 
  south 
  to 
  Cordillera 
  de 
  

  

  San 
  Bias 
  (Cerro 
  Azul) 
  of 
  eastern 
  rauama.) 
  panamensis 
  

  

  ////. 
  Cieneral 
  coloration 
  of 
  upporparts, 
  except 
  for 
  head 
  and 
  shoulders, 
  not 
  uni- 
  

   form 
  light 
  mahogany 
  red 
  ; 
  underside 
  of 
  tail 
  not 
  deep 
  ferruginous. 
  

   /. 
  GeruMal 
  coloration 
  of 
  uppt'riiarls 
  as 
  well 
  as 
  underparts 
  light 
  hufC 
  over- 
  

   laid 
  with 
  dusky 
  tipiK-d 
  hairs; 
  side 
  whiskers 
  on 
  face 
  silky 
  light 
  buff; 
  

   dark 
  markings 
  on 
  head 
  and 
  limbs 
  usually 
  inconspicuous; 
  crown 
  cap 
  

   on 
  head 
  grading 
  from 
  black 
  to 
  buff 
  tinged 
  with 
  brownish 
  ; 
  stiff 
  long 
  

   black 
  hairs 
  above 
  eyes 
  concealing 
  to 
  a 
  variable 
  extent 
  the 
  white 
  or 
  

   buff 
  triangular 
  forehead 
  patch 
  ; 
  elbows 
  and 
  outer 
  sides 
  of 
  forearms 
  

   more 
  or 
  less 
  distinctly 
  blackish 
  ; 
  elongate 
  black 
  patches 
  on 
  knees, 
  the 
  

   hairs 
  black 
  to 
  roots. 
  (Southern 
  Nicaragua, 
  Greytowu 
  to 
  Lake 
  Mana- 
  

   gua.) 
  I 
  . 
  geoffroyi 
  

  

  //. 
  General 
  coloration 
  of 
  upperparts 
  as 
  well 
  as 
  underparts 
  not 
  light 
  buff. 
  

   J. 
  Chest 
  and 
  belly 
  normally 
  near 
  tawny 
  or 
  cinnamon-rufous. 
  

  

  K. 
  General 
  coloration 
  of 
  upperparts 
  golden 
  yellowish 
  to 
  cinnamon- 
  

   rufous 
  in 
  tone 
  but 
  obscured 
  by 
  numerous 
  overlying 
  black-tipped 
  

   hairs; 
  crown 
  cap 
  black, 
  the 
  hairs 
  black 
  to 
  base; 
  underparts 
  and 
  

   flanks 
  near 
  tawny 
  or 
  cinnamon-rufous 
  ; 
  tail 
  black 
  above, 
  more 
  or 
  

   less 
  mixed 
  with 
  tawny 
  below 
  from 
  base 
  to 
  near 
  callosity; 
  side 
  

   whiskers 
  on 
  face 
  blackish. 
  (Eastern 
  side 
  of 
  central 
  cordillora 
  

  

  of 
  Costa 
  Rica. 
  ) 
  ornatus 
  

  

  KK. 
  General 
  coloration 
  of 
  upperparts 
  lighter 
  or 
  duller 
  than 
  preceding. 
  

   L. 
  General 
  coloration 
  of 
  upperparts, 
  except 
  for 
  head 
  and 
  shoulders, 
  

   clear 
  tawny, 
  intermixed 
  with 
  black-tipped 
  hairs 
  ; 
  sides, 
  thighs, 
  

   and 
  belly 
  paler, 
  tawny 
  or 
  cinnamon-buff, 
  with 
  somewhat 
  paler 
  

   tone 
  extending 
  downward 
  to 
  wrists 
  and 
  ankles 
  on 
  inner 
  sur- 
  

   faces 
  of 
  fore 
  and 
  hind 
  limbs; 
  shoulders 
  and 
  outer 
  surfaces 
  of 
  

   fore 
  and 
  hind 
  limbs 
  black; 
  tail 
  .sharply 
  bicolored, 
  black 
  above 
  

   to 
  tip, 
  and 
  tawny 
  below; 
  crown 
  cap 
  either 
  black 
  or 
  dusky 
  (in- 
  

   dividual 
  hairs 
  buff 
  or 
  cinnamon-buff 
  at 
  base) 
  ; 
  side 
  whiskers 
  on 
  

   face 
  cream 
  color. 
  (Azuero 
  Peninsula, 
  Panama. 
  )_-azuerensis 
  

   LL. 
  General 
  coloration 
  of 
  upperparts, 
  except 
  for 
  head 
  and 
  shoulders 
  

   in 
  some 
  individuals, 
  buckthorn 
  brown 
  to 
  Mars 
  brown, 
  sparsely 
  

   or 
  Jioticeably 
  intermixed 
  with 
  blackish 
  hairs 
  (especially 
  on 
  

   midline 
  of 
  back 
  in 
  sonit? 
  individuals) 
  ; 
  belly 
  honey 
  yellow 
  to 
  

   tawny, 
  «'Xten(liiig 
  downward 
  on 
  inner 
  surfaces 
  r>f 
  hind 
  limbs 
  to 
  

   ankles, 
  and 
  a 
  lighter 
  tone 
  extending 
  downward 
  on 
  inner 
  sur- 
  

   faces 
  of 
  forellmbs 
  to 
  wrists; 
  outer 
  surfaces 
  of 
  fore 
  and 
  hind 
  

   limbs 
  usually 
  black 
  (in 
  some 
  individuals 
  restricted 
  more 
  or 
  

   le8.s 
  to 
  elbow 
  and 
  knee 
  patclies) 
  ; 
  tail 
  usimlly 
  sharply 
  bicolored, 
  

   bhnk 
  or 
  diisky 
  above 
  to 
  tip 
  and 
  tawny 
  below 
  (when 
  otherwise, 
  

   mixed 
  light 
  and 
  dark 
  hairs 
  cover 
  tall 
  above 
  and 
  below) 
  ; 
  an- 
  

   terior 
  part 
  of 
  crown 
  jiatch 
  more 
  or 
  less 
  suffused 
  with 
  cliuia- 
  

   nion 
  buff, 
  owing 
  to 
  liglil 
  basal 
  color 
  of 
  liairs 
  and 
  tending 
  to 
  

   form 
  a 
  transverse 
  band 
  across 
  forehead 
  ; 
  side 
  whiskers 
  on 
  face 
  

   light 
  huff 
  to 
  cream-huff. 
  (Northwestern 
  Costa 
  Rica 
  and 
  higlier 
  

  

  p<irtioiis 
  of 
  northern 
  Nicaragua.) 
  frontatus 
  

  

  JJ. 
  Chest 
  and 
  belly 
  normally 
  neither 
  tawny 
  nor 
  orhrnceous-rufous. 
  

  

  J/. 
  Upper 
  back 
  distinctly 
  darker 
  than 
  lumbar 
  region 
  of 
  back; 
  top 
  of 
  

   head. 
  nJTk 
  and 
  upper 
  back, 
  and 
  outer 
  surfaces 
  of 
  fore 
  and 
  liind 
  

   llmb.s 
  varying 
  from 
  blackish 
  to 
  brownish 
  black. 
  

  

  002420—44 
  -2 
  

  

  