﻿42 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.96 
  

  

  Type 
  locality. 
  — 
  xVltos 
  Negritos, 
  10 
  miles 
  east 
  of 
  Monti 
  jo 
  Bay 
  (part 
  

   of 
  the 
  spur 
  forming 
  south 
  drainage 
  divide 
  of 
  Kio 
  Negro), 
  Mariato 
  

   Suay 
  Lands, 
  Azuero 
  Peninsula, 
  Veraguas 
  Province, 
  Panama; 
  alti- 
  

   tude, 
  1.500 
  feet. 
  

  

  Type 
  specimen. 
  — 
  Female 
  adult, 
  Cleveland 
  Museum 
  Natural 
  His- 
  

   tory 
  No. 
  1235. 
  

  

  Distribution. 
  — 
  Forested 
  mountains 
  of 
  the 
  Azuero 
  Peninsula, 
  Pan- 
  

   ama, 
  probably 
  in 
  deeper 
  forests 
  on 
  both 
  slopes, 
  but 
  known 
  only 
  from 
  

   the 
  western 
  (Veraguas) 
  side 
  from 
  the 
  vicinity 
  of 
  Ponuga 
  southward. 
  

   Possibly 
  ranging 
  west 
  to 
  Burica 
  Peninsula 
  on 
  Panama-Costa 
  Rican 
  

   boundary. 
  

  

  General 
  characters. 
  — 
  A 
  subspecies 
  distinguished 
  from 
  neighboring 
  

   forms 
  by 
  lighter 
  tawny 
  or 
  ochraceous-tawny 
  general 
  coloration. 
  

  

  Color. 
  — 
  Face 
  blackish 
  ; 
  top 
  of 
  head 
  and 
  back 
  of 
  neck 
  varying 
  from 
  

   deep 
  black 
  to 
  a 
  mixture 
  of 
  black 
  and 
  cinnamon-buff, 
  with 
  black 
  pre- 
  

   dominating; 
  upperparts 
  in 
  general 
  ochraceous-tawny 
  thinly 
  inter- 
  

   mixed 
  with 
  black-tipped 
  hairs; 
  shoulders 
  and 
  outer 
  surfaces 
  of 
  arms 
  

   and 
  legs 
  black 
  ; 
  belly 
  similar 
  to 
  back, 
  but 
  paler 
  owing 
  to 
  absence 
  of 
  

   black-tipped 
  hairs; 
  throat 
  and 
  chest 
  cinnamon-buff, 
  this 
  general 
  tone 
  

   extending 
  downward 
  to 
  wrists 
  and 
  ankles 
  on 
  inner 
  surfaces 
  of 
  limbs; 
  

   tail 
  above 
  black, 
  below 
  tawny 
  to 
  proximal 
  end 
  of 
  callosity. 
  

  

  Skull. 
  — 
  Rather 
  small 
  and 
  narrow, 
  but 
  very 
  similar 
  otherwise 
  to 
  

   that 
  of 
  panamensis. 
  

  

  Measurements. 
  — 
  An 
  adult 
  male 
  and 
  female 
  from 
  type 
  locality, 
  re- 
  

   spectively: 
  Total 
  length, 
  l.lYO, 
  1,166 
  mm.; 
  tail, 
  720, 
  YOl; 
  hind 
  foot, 
  

   177, 
  168. 
  Skull 
  (t3^pe, 
  from 
  original 
  description) 
  : 
  Greatest 
  length, 
  

   110.8; 
  width 
  of 
  brain 
  case, 
  56.8; 
  zygomatic 
  breadth, 
  65.1; 
  maxillary 
  

   tooth 
  row, 
  27.7. 
  An 
  adult 
  male 
  from 
  type 
  locality 
  : 
  Greatest 
  length, 
  

   109.8 
  ; 
  orbital 
  width, 
  57.7 
  ; 
  postorbital 
  constriction, 
  44.1 
  ; 
  width 
  of 
  brain 
  

   case, 
  58.7 
  ; 
  zygomatic 
  breadth, 
  67 
  ; 
  maxillary 
  tooth 
  row, 
  29.7. 
  

  

  Remarks. 
  — 
  This 
  subspecies 
  is 
  definitely 
  known 
  only 
  from 
  the 
  heavily 
  

   forested 
  mountains 
  of 
  the 
  Azuero 
  Peninsula, 
  where 
  it 
  appears 
  to 
  be 
  

   isolated, 
  but 
  may 
  prove 
  to 
  have 
  a 
  more 
  extended 
  range 
  near 
  the 
  Pacific 
  

   coast 
  of 
  western 
  Panama. 
  A 
  series 
  of 
  25 
  skulls 
  from 
  the 
  Burica 
  Penin- 
  

   sula, 
  near 
  the 
  Panama-Costa 
  Rican 
  boundary, 
  said 
  to 
  be 
  from 
  light- 
  

   colored 
  skins 
  not 
  saved 
  and, 
  therefore, 
  not 
  available 
  for 
  examination 
  

   by 
  us, 
  are 
  indistinguishable 
  from 
  those 
  inhabiting 
  regions 
  as 
  far 
  north 
  

   as 
  Nicaragua. 
  For 
  reasons 
  of 
  geography 
  and 
  light 
  color 
  reported 
  we 
  

   refer 
  them, 
  tentatively, 
  to 
  as/uerensis. 
  

  

  Specimens 
  examAned. 
  — 
  Total 
  number, 
  27, 
  all 
  from 
  Panama, 
  as 
  fol- 
  

   lows: 
  Altos 
  Negritos, 
  Azuero 
  Peninsula 
  (type 
  locality), 
  2 
  (CM. 
  N. 
  

   H.) 
  ; 
  Rio 
  La 
  Vaca, 
  near 
  Puerto 
  Armuelles, 
  Burica 
  Peninsula, 
  25 
  (skulls 
  

   only,A.H. 
  S.). 
  

  

  