﻿THE 
  SPIDER 
  MONKEYS 
  KELLOGC! 
  AND 
  GOLDMAN 
  29 
  

  

  amba, 
  Imbabura 
  Province, 
  1 
  (skull 
  only, 
  U. 
  M. 
  M. 
  Z.) 
  ; 
  no 
  definite 
  

   locality, 
  1 
  (U.M.M. 
  Z.). 
  

  

  ATELES 
  FUSCICEPS 
  ROBUSTUS 
  J. 
  A. 
  Allen 
  

  

  Colombian 
  Black 
  Spider 
  Monkey 
  

  

  Atclcs 
  robiintu.'! 
  J. 
  A. 
  Ali.i;n, 
  Bull. 
  Aiiier. 
  Mus. 
  Nat. 
  Hist., 
  vol. 
  33, 
  art. 
  43, 
  p. 
  052, 
  

  

  Dee. 
  14, 
  1914. 
  

   Atclcs 
  dwicnsiii 
  Goi.uman, 
  Proc. 
  Binl. 
  Soe. 
  Washington, 
  vol. 
  28, 
  j). 
  lUl, 
  Apr. 
  13, 
  

  

  1915. 
  Type 
  healliy, 
  near 
  head 
  t>l' 
  Kin 
  Llnion, 
  Mount 
  Pure, 
  eastern 
  Panama 
  ; 
  

  

  altitude 
  5,200 
  leet. 
  

  

  2ype 
  locality. 
  — 
  Gallera, 
  Department 
  of 
  Cauca, 
  western 
  Andes, 
  Co- 
  

   lombia; 
  altitude, 
  5,0(J0 
  feet. 
  

  

  Type 
  specimen. 
  — 
  Male 
  adult, 
  skin 
  and 
  skull, 
  American 
  Museum 
  of 
  

   Natural 
  History 
  No. 
  32354, 
  collected 
  July 
  13, 
  1911, 
  by 
  Leo 
  E. 
  Miller. 
  

  

  Diatiibution. 
  — 
  Western 
  cordillera 
  of 
  Andes 
  from 
  southwestern 
  Co- 
  

   lombia 
  northward 
  on 
  west 
  side 
  of 
  Rio 
  Cauca 
  to 
  eastern 
  Panama 
  

  

  (.Mount 
  Pirre). 
  

  

  General 
  characters. 
  — 
  All 
  black, 
  except 
  for 
  a 
  slight 
  brownish 
  tinge 
  on 
  

   forehead 
  of 
  one 
  individual 
  and 
  a 
  few 
  inconspicuous 
  white 
  hairs 
  on 
  

   chin 
  and 
  about 
  mouth; 
  hairs 
  on 
  back 
  harsh 
  and 
  of 
  medium 
  length 
  

   (majority 
  of 
  hairs 
  on 
  midline 
  40-70 
  mm. 
  in 
  length) 
  ; 
  tail 
  variable 
  in 
  

   length, 
  occasionally 
  nearly 
  twice 
  as 
  long 
  as 
  head 
  and 
  body 
  ; 
  hind 
  

   foot 
  .-nuiil 
  (100-170 
  mm.) 
  ; 
  tail 
  hairs 
  of 
  moderate 
  length 
  (30-50 
  mm. 
  

   on 
  ui)perside) 
  . 
  CIo.sely 
  allied 
  to 
  fiusciceps 
  of 
  Ecuador 
  but 
  more 
  nearly 
  

   uniform 
  black 
  in 
  color, 
  without 
  the 
  distinctly 
  brownish 
  head 
  of 
  

   fuHciceps. 
  Similar 
  in 
  color 
  to 
  paniaciLs 
  of 
  northern 
  Brazil, 
  but 
  with 
  

   a 
  few 
  white 
  hairs 
  on 
  chin 
  (chin 
  nearly 
  naked 
  and 
  white 
  hairs 
  absent 
  

   in 
  paniJiCws) 
  ; 
  foot 
  .^mailer; 
  hair 
  on 
  back 
  and 
  tail 
  shorter; 
  skidl 
  dif- 
  

   fering 
  in 
  derail. 
  DilFers 
  from 
  (/eoffroyi 
  and 
  sub.species 
  of 
  Middle 
  

   America 
  in 
  nearly 
  uniform 
  black, 
  instead 
  of 
  diverse 
  coloration, 
  vary- 
  

   ing 
  from 
  light 
  buff 
  to 
  fenuginous. 
  

  

  < 
  olor. 
  — 
  Face 
  and 
  entire 
  pelage 
  deep 
  glossy 
  black, 
  exeei)t 
  in 
  sonn' 
  

   .''I)eciniens 
  having 
  a 
  slight 
  browni.sh 
  tinge 
  on 
  the 
  forehead 
  and 
  a 
  few 
  

   ^slliti.'<ll 
  hairs 
  on 
  chin 
  and 
  about 
  mouth. 
  

  

  SL-uU. 
  — 
  About 
  a.s 
  in 
  the 
  related 
  form 
  fuJ^clceps. 
  Vei-y 
  similar 
  to 
  that 
  

   nf 
  paniscu-s. 
  but 
  pninaxijlao 
  less 
  produced 
  anteriorly 
  beyond 
  plane 
  of 
  

   canines; 
  anterior 
  nasal 
  opening 
  less 
  elongated. 
  Closely 
  resembling 
  

   that 
  of 
  f/ro/frt^y/^ 
  but 
  rostrum 
  longer; 
  anterior 
  jjiofile 
  risinir 
  h'ss 
  

   steeply 
  from 
  ends 
  of 
  premaxillae; 
  auditory 
  hiillar 
  u-iially 
  more 
  

   flattened. 
  

  

  .)f'ffMi/r/ments. 
  — 
  Type 
  ( 
  f 
  roni 
  original 
  description): 
  Total 
  length, 
  

   l.-"JO 
  mill.: 
  tail. 
  r;J0; 
  hind 
  foot, 
  IGO. 
  Two 
  adult 
  fenuile 
  topotypes, 
  

   respect 
  iv«'ly: 
  Total 
  length, 
  1.150, 
  l.LiOO: 
  tail, 
  GOO, 
  750; 
  hind 
  foot, 
  155, 
  

   lOO. 
  ^7•////,• 
  'l\vo 
  adult 
  female 
  topotypes, 
  respectively: 
  Greate.st 
  

   length. 
  ll.-).3, 
  111.7; 
  (»rhital 
  width, 
  58.9, 
  62.2; 
  postorbital 
  constriction, 
  

  

  