﻿40 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.96 
  

  

  have 
  commonly 
  been 
  referred 
  somewhat 
  doubtfully 
  to 
  A. 
  geofroyi 
  

   Kuhl. 
  The 
  description 
  of 
  A. 
  omatus 
  by 
  Gray 
  {op. 
  cit.), 
  from 
  an 
  

   unknown 
  locality, 
  applies 
  so 
  well 
  to 
  specimens 
  from 
  eastern 
  Costa 
  Rica 
  

   that 
  their 
  identity 
  seems 
  unmistakable. 
  A 
  more 
  detailed 
  description 
  

   of 
  the 
  type 
  than 
  that 
  published 
  by 
  Gray 
  is 
  given 
  by 
  Elliot 
  (A 
  review 
  

   of 
  the 
  Primates, 
  vol. 
  2, 
  p. 
  45, 
  June 
  1913) 
  . 
  The 
  glossy 
  quality 
  as 
  well 
  as 
  

   bright 
  colors 
  of 
  the 
  pelage 
  suggests 
  the 
  propriet}^ 
  of 
  the 
  name 
  omatus. 
  

   The 
  contrast 
  in 
  color 
  with 
  plain 
  buffy 
  geo-ffroyl 
  of 
  southeastern 
  Nica- 
  

   ragua 
  is 
  very 
  great, 
  but 
  close 
  agreement 
  in 
  cranial 
  characters 
  and 
  other 
  

   evidence 
  indicate 
  probable 
  intergradation. 
  

  

  Specimens 
  examined. 
  — 
  Total 
  number, 
  14, 
  all 
  from 
  Costa 
  Eica 
  as 
  

   follows: 
  Cataratas, 
  Rio 
  San 
  Carlos, 
  2 
  (A. 
  M. 
  N. 
  H.) 
  ; 
  Cuabre, 
  Tala- 
  

   manca 
  region 
  1 
  (A. 
  M. 
  N. 
  H.) 
  ; 
  Guapiles, 
  Limon 
  Province, 
  1 
  (A. 
  M. 
  

   N. 
  H.) 
  ; 
  Santa 
  Maria, 
  37 
  miles 
  south 
  of 
  San 
  Jose, 
  3 
  (skulls 
  only, 
  A. 
  M. 
  

   N. 
  H.) 
  ; 
  Talamanca 
  region, 
  7. 
  

  

  ATELES 
  GEOFFROYI 
  PANAMENSIS, 
  new 
  subspecies 
  

  

  Red 
  Spider 
  Monkey; 
  Mono 
  Colorado 
  

  

  Type 
  locality. 
  — 
  Cerro 
  Brujo, 
  about 
  15 
  miles 
  southeast 
  of 
  Portobello, 
  

   Province 
  of 
  Colon, 
  Panama 
  ; 
  altitude 
  2,000 
  feet. 
  

  

  Type 
  specimen. 
  — 
  Female 
  adult, 
  skin 
  and 
  skull, 
  U. 
  S. 
  N. 
  M. 
  No. 
  171489 
  

   (Biological 
  Surveys 
  collection) 
  ; 
  collected 
  June 
  8, 
  1911, 
  by 
  E. 
  A. 
  Gold- 
  

   man 
  ; 
  original 
  number, 
  21165. 
  

  

  Distribution. 
  — 
  Forested 
  regions 
  of 
  Panama 
  east 
  of 
  the 
  Canal 
  Zone 
  

   (Cordillera 
  de 
  San 
  Bias) 
  , 
  and 
  west 
  through 
  Chiriqui 
  to 
  central 
  western 
  

   Costa 
  Rica. 
  

  

  General 
  characters. 
  — 
  A. 
  rather 
  large, 
  deeply 
  rufescent 
  race. 
  Very 
  

   similar 
  to 
  omatus 
  of 
  the 
  Caribbean 
  slope 
  of 
  Costa 
  Rica, 
  but 
  reddish 
  

   tone 
  more 
  intense, 
  the 
  back 
  less 
  obscured 
  by 
  overlying 
  dusky 
  hairs; 
  

   inner 
  side 
  of 
  upper 
  arm 
  pinkish 
  cinnamon 
  to 
  ferruginous. 
  Differs 
  

   from 
  azuerensis 
  of 
  Azuero 
  Peninsula, 
  Panama, 
  in 
  deep 
  reddish 
  instead 
  

   of 
  cinnamon 
  or 
  tawny 
  general 
  coloration. 
  

  

  Color. 
  — 
  Type: 
  Upperparts 
  from 
  back 
  of 
  shoulders 
  to 
  base 
  of 
  tail, 
  

   backs 
  of 
  thighs, 
  and 
  sides 
  of 
  body 
  ferruginous, 
  slightly 
  obscured 
  by 
  

   black 
  tips 
  of 
  hairs; 
  outer 
  surfaces 
  of 
  fore 
  and 
  hind 
  limbs 
  either 
  black 
  

   or 
  blackish 
  to 
  knees 
  and 
  elbows 
  ; 
  outer 
  surfaces 
  of 
  limbs 
  below 
  knees 
  

   and 
  elbows 
  either 
  black 
  or 
  with 
  varying 
  admixture 
  of 
  black 
  and 
  ferru- 
  

   ginous 
  hairs, 
  the 
  hairs 
  banded 
  but 
  black 
  at 
  tips; 
  underparts 
  thinly 
  

   haired, 
  pinkish 
  cinnamon 
  on 
  chest 
  and 
  along 
  inner 
  sides 
  of 
  hind 
  limbs 
  

   to 
  ankles, 
  becoming 
  deep, 
  clear 
  ferruginous 
  or 
  dark 
  dusty 
  reddish 
  over 
  

   abdomen 
  ; 
  face, 
  crown 
  cap 
  on 
  head, 
  and 
  median 
  streak 
  on 
  back 
  of 
  neck 
  

   blackish 
  ; 
  sides 
  of 
  neck 
  covered 
  w^ith 
  a 
  mixture 
  of 
  pinkish 
  buff, 
  cinna- 
  

   mon-buff, 
  and 
  blackish 
  hairs 
  ; 
  chin 
  nearly 
  naked 
  ; 
  throat 
  and 
  under 
  side 
  

   of 
  neck 
  thinly 
  clothed 
  with 
  light 
  cinnamon-drab 
  or 
  light 
  brownish 
  

   hairs; 
  tail 
  above 
  ferruginous 
  heavily 
  mixed 
  with 
  black 
  on 
  basal 
  two- 
  

  

  