﻿THE 
  SPIDER 
  MONKEYS 
  KELLOGG 
  AM) 
  (JOLDMAX 
  19 
  

  

  form 
  ill 
  tlie 
  group. 
  It 
  afrroes 
  closely 
  in 
  larfijc 
  size 
  with 
  paniscus 
  but 
  

   dilFers 
  in 
  having 
  black 
  instead 
  of 
  flesh-colored 
  face, 
  shorter 
  pelage, 
  and 
  

   cranial 
  details 
  pointed 
  out. 
  The 
  general 
  resemblance 
  of 
  chamek 
  to 
  

   A. 
  fu^ciceps 
  rohuyfiis 
  of 
  Colombia 
  is 
  very 
  close, 
  but 
  the 
  short 
  white 
  

   hairs 
  on 
  the 
  chin 
  and 
  about 
  the 
  mouth, 
  together 
  with 
  the 
  smaller 
  foot 
  

   of 
  the 
  latter, 
  are 
  distinctive. 
  

  

  Specimens 
  collected 
  by 
  Johann 
  Xalterer 
  in 
  1825 
  on 
  the 
  Rio 
  Sarare 
  

   while 
  en 
  route 
  from 
  Matto 
  Grosso 
  (Villa 
  Bella 
  de 
  Santissima 
  Trini- 
  

   dade) 
  to 
  Sao 
  Vincente 
  and 
  in 
  1829 
  on 
  the 
  Rio 
  Madeira 
  above 
  the 
  mouth 
  

   of 
  the 
  Rio 
  Abuna 
  probably 
  are 
  referable 
  to 
  this 
  race 
  (Wagner, 
  Abh. 
  

   math.-phys. 
  CI. 
  bayer. 
  Akad. 
  Wiss. 
  Miinchen, 
  vol. 
  5, 
  Abt. 
  2, 
  p. 
  418, 
  

   1848). 
  Similarly 
  the 
  specimens 
  described 
  by 
  Miranda 
  Ribeiro 
  (Com- 
  

   mi'^sao 
  de 
  Linhas 
  Telegraphicas 
  Estrategicas 
  de 
  Matto 
  Grosso 
  ao 
  

   Aniazonas, 
  Annexo 
  No. 
  5, 
  Hist. 
  Nat., 
  Zool., 
  Manmiiferos, 
  p. 
  8, 
  May 
  

   1914) 
  from 
  Cabeceiras 
  do 
  Pirocoluina 
  and 
  Jani 
  on 
  Rio 
  Jarua, 
  a 
  tribu- 
  

   tar}' 
  of 
  the 
  G)--Parana, 
  are 
  likewise 
  referred 
  to 
  this 
  race. 
  This 
  spider 
  

   monkey 
  is 
  rejiorted 
  to 
  occur 
  also 
  in 
  the 
  Serra 
  dos 
  Parecis 
  in 
  central 
  

   Matto 
  Grosso. 
  The 
  specimens 
  mentioned 
  by 
  Lonnberg 
  (Arkiv 
  for 
  

   Zool., 
  vol. 
  32 
  A, 
  No. 
  25, 
  p. 
  10. 
  July 
  18, 
  1940) 
  from 
  Puerto 
  Salinas 
  and 
  

   Desierto 
  on 
  the 
  Rio 
  Beni, 
  Bolivia, 
  may 
  belong 
  here 
  since 
  three 
  speci- 
  

   mens 
  (C. 
  M. 
  Nos. 
  2772, 
  2774, 
  2775) 
  taken 
  by 
  Jose 
  Steinbach 
  on 
  the 
  Rio 
  

   Yapacani, 
  a 
  tributary 
  of 
  the 
  Rio 
  Mamore, 
  seem 
  referable 
  to 
  this 
  form. 
  

  

  Under 
  the 
  name 
  of 
  Atcles 
  ater 
  \^=paniscus']^ 
  Thomas 
  (Ann. 
  Mag. 
  

   Nat. 
  Hi.st., 
  ser. 
  10, 
  vol. 
  2, 
  p. 
  251, 
  Sept. 
  1928) 
  listed 
  specimens 
  from 
  

   Cerro 
  Azul, 
  altitude 
  2,000 
  feet 
  about 
  35 
  miles 
  west 
  of 
  Rio 
  Ucayali, 
  and 
  

   from 
  Chicosa, 
  upper 
  Rio 
  Ucayali, 
  Peru, 
  about 
  35 
  miles 
  below 
  junc- 
  

   lioii 
  of 
  I'rugamba 
  and 
  Tambo 
  Rivers, 
  altitude 
  1,500 
  feet. 
  A 
  similar 
  

   allocation 
  has 
  been 
  made 
  i)y 
  Thomas 
  (Proc. 
  U. 
  S. 
  Nat. 
  Mus., 
  vol. 
  58, 
  

   p. 
  2:^:0, 
  Nov. 
  10, 
  1920) 
  of 
  specimens 
  (U. 
  S. 
  N. 
  M. 
  Nos. 
  194337-38 
  and 
  

   -40) 
  from 
  llio 
  Comberciato, 
  a 
  tributaiy 
  of 
  Rio 
  Urubamba, 
  Cuzco, 
  

   Peru, 
  altitude 
  3.O00 
  feet, 
  and 
  from 
  Paciiitea. 
  

  

  AccfU'ding 
  to 
  liartlett 
  (Proc. 
  Zool. 
  Soc. 
  L<jndon 
  for 
  1871, 
  pt. 
  1, 
  p. 
  

   218, 
  June 
  1871) 
  the 
  black-faced 
  spider 
  monkey 
  inhabits 
  the 
  forests 
  on 
  

   the 
  Rio 
  Ucayali 
  and 
  tlie 
  low 
  districts 
  of 
  the 
  valley 
  of 
  the 
  Ama/onas 
  

   ill 
  I*eru. 
  A 
  specimen 
  from 
  Peruate 
  on 
  Rio 
  Maranon 
  is 
  recorded 
  by 
  

   Cabrera 
  (Trabajos 
  Mus. 
  Nat. 
  Cienc. 
  Nat. 
  IMadrid, 
  ser. 
  zool., 
  No. 
  31, 
  

   j». 
  1<'>. 
  Oct. 
  28, 
  1!»17). 
  A 
  female 
  obtained 
  by 
  Oastelnau 
  and 
  Devilje 
  on 
  

   tiie 
  banks 
  of 
  the 
  Jii(; 
  Javari 
  near 
  its 
  mouth 
  on 
  the 
  Rio 
  Amazonas 
  is 
  

   listed 
  by 
  I. 
  Geolfroy 
  (Catalogue 
  methodique 
  de 
  la 
  collection 
  des 
  mam- 
  

   miferes, 
  pt. 
  1 
  (('atalogue 
  (h's 
  I'rimales), 
  [). 
  18, 
  IS51 
  ) 
  . 
  

  

  It 
  is 
  possible 
  that 
  this 
  bhick-faccd 
  spider 
  monkey 
  may 
  range 
  down 
  

   the 
  Rio 
  Maranon 
  and 
  the 
  Solimoes 
  to 
  the 
  Rio 
  .Jurua 
  in 
  I>ia/,il 
  since 
  

   I^iinnlxMg 
  (Arkiv 
  f<ir 
  Zool., 
  vol. 
  32A, 
  No. 
  25, 
  \\ 
  ]0, 
  July 
  IS, 
  |!M0) 
  lihts 
  

   as 
  ater 
  .specimens 
  from 
  Lago 
  (Jrande 
  west 
  of 
  mouth 
  of 
  Rio 
  Jurua 
  on 
  

   Rio 
  Solimoes, 
  from 
  Jaburu 
  and 
  Joao 
  Pessoa 
  on 
  the 
  lower 
  Hio 
  Jurua 
  

  

  