﻿THE 
  SPIDER 
  MONKEYS 
  — 
  KELLOGG 
  AND 
  GOLDMAN 
  45 
  

  

  INCERTAE 
  SEDIS 
  

  

  (?) 
  ATELES 
  RUFIVENTKIS 
  Sclatcr 
  

  

  Atih\s 
  viUn-o.stci 
  ScL-MKR, 
  I'mc. 
  ZuoL 
  Soc. 
  London 
  for 
  1871, 
  pt. 
  2, 
  p. 
  478, 
  Aug. 
  1.S71 
  

  

  {tier 
  Gray). 
  

   Atrhs 
  rufii'ftitrL'* 
  Sci.ateu. 
  Troc. 
  Zool. 
  See. 
  London 
  for 
  1872, 
  pt. 
  2, 
  p. 
  G88, 
  pi. 
  57 
  

  

  (coL), 
  Nov. 
  1872. 
  

  

  Type 
  locaJf'fr/. 
  — 
  Rio 
  Atrato, 
  Darien, 
  Colombia. 
  

  

  Type 
  spi'chnrii. 
  — 
  Britisli 
  Miisoinn 
  (Xatural 
  History) 
  No. 
  . 
  

  

  Remarks. 
  — 
  Sclater 
  (Ptoc. 
  Z(K)1. 
  Soc. 
  London 
  for 
  1871, 
  pt. 
  2, 
  p. 
  478, 
  

   Au^. 
  1871) 
  stated 
  that 
  the 
  type 
  of 
  Afeles 
  iniflventris^ 
  a 
  young 
  female, 
  

   with 
  body 
  length 
  12 
  inches, 
  tail 
  15 
  inches, 
  was 
  obtained 
  at 
  Colon, 
  Pan- 
  

   ama, 
  by 
  an 
  officer 
  of 
  the 
  Royal 
  West 
  Indian 
  Mail 
  Co. 
  and 
  tJiat 
  it 
  had 
  

   been 
  brought 
  from 
  the 
  Rio 
  Atrato 
  by 
  one 
  of 
  the 
  American 
  party 
  (pre- 
  

   sumably 
  the 
  Dan'en 
  E.xploring 
  Expedition 
  under 
  the 
  command 
  of 
  

   Comdr. 
  T. 
  O. 
  Self 
  ridge. 
  U. 
  S. 
  X.) 
  engaged 
  on 
  the 
  survey 
  of 
  the 
  isthmus 
  

   for 
  a 
  ship 
  canal. 
  The 
  color 
  of 
  this 
  monkey 
  was 
  described 
  as 
  uniform 
  

   black 
  excejit 
  for 
  the 
  flesh-colored 
  face 
  and 
  muzzle 
  and 
  the 
  pale 
  fulvous 
  

   belly; 
  the 
  color 
  of 
  the 
  latter, 
  however, 
  hardly 
  extending 
  on 
  the 
  inner 
  

   surfaces 
  of 
  the 
  limbs. 
  A 
  colored 
  illustration 
  for 
  this 
  monkey 
  was 
  sub- 
  

   sequently 
  published 
  by 
  Sclater 
  (Proc. 
  Zool. 
  Soc. 
  London 
  for 
  1872, 
  })t. 
  

   2, 
  p. 
  688, 
  pi. 
  57 
  (col.), 
  Nov. 
  1872). 
  Elliot 
  (A 
  review 
  of 
  the 
  l^rinuit.es, 
  

   vol. 
  2, 
  p. 
  30, 
  June 
  15, 
  1913), 
  however, 
  described 
  this 
  monkey 
  as 
  having 
  

   the 
  "underi)arts 
  extending 
  a 
  short 
  distance 
  on 
  inner 
  side 
  of 
  arms 
  and 
  

   leg.s, 
  bright 
  rufous." 
  and 
  the 
  line 
  between 
  the 
  color 
  of 
  the 
  underparts 
  

   and 
  the 
  black 
  of 
  the 
  body 
  as 
  sharply 
  defined. 
  

  

  Dt't<M-mination 
  of 
  the 
  status 
  of 
  the 
  name 
  AfeJcs 
  rufivnitrh 
  presents 
  

   some 
  ditiiculty 
  at 
  the 
  present 
  time. 
  The 
  relative 
  lengths 
  of 
  head 
  and 
  

   body 
  to 
  that 
  of 
  the 
  .short-haired 
  tail, 
  the 
  color 
  pattern, 
  and 
  direction 
  

   of 
  hair 
  on 
  crown 
  and 
  foi-ehead 
  corresp(jnd 
  closely 
  with 
  these 
  features 
  

   in 
  Ahtvattn 
  paUiata 
  ar<juatoriallH^ 
  young 
  females 
  of 
  which 
  also 
  lack 
  

   tlio 
  bushy 
  beard 
  present 
  on 
  the 
  throat 
  in 
  the 
  males. 
  These 
  resem- 
  

   blances 
  are 
  shown 
  very 
  well 
  by 
  two 
  .slightly 
  larger 
  young 
  howlers 
  

   {V. 
  8. 
  N. 
  M. 
  Nos. 
  3349, 
  3359) 
  also 
  from 
  the 
  Rio 
  Atrato. 
  It 
  .seems 
  

   unlikely 
  that 
  representatives 
  of 
  both 
  Ateles 
  and 
  Alouatta 
  with 
  the 
  

   same 
  color 
  i)attern 
  would 
  be 
  found 
  in 
  the 
  same 
  region. 
  Sclater 
  states 
  

   that 
  the 
  thumb 
  is 
  absent, 
  but 
  examination 
  of 
  skins 
  in 
  the 
  collection 
  

   shows 
  that 
  the 
  thumb 
  in 
  skins 
  of 
  some 
  young 
  individuals 
  is 
  incon- 
  

   spicuous 
  and 
  might 
  have 
  been 
  overlooked. 
  The 
  hand 
  and 
  feet 
  in 
  the 
  

   illustration 
  published 
  by 
  Sclater 
  {ojk 
  <it.) 
  seem 
  more 
  clo.sely 
  to 
  re- 
  

   semble 
  those 
  of 
  AUmatta 
  than 
  those 
  of 
  Atrlrs. 
  Elliot 
  {op. 
  c'li.) 
  states 
  

   that 
  no 
  skull 
  .s^mmus 
  to 
  have 
  been 
  preserved. 
  While 
  all 
  these 
  points 
  

   may 
  be 
  given 
  consideration 
  final 
  generic 
  allocation 
  nuist 
  await 
  critical 
  

   examination 
  of 
  the 
  type, 
  now 
  not 
  available. 
  

  

  u. 
  1. 
  «oviiii(MiNT 
  fmNTiNa 
  orrict: 
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