﻿356 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.98 
  

  

  Type 
  locality.—Bond&, 
  northwest 
  corner 
  of 
  base 
  of 
  Sierra 
  Nevada 
  de 
  

   Santa 
  Marta, 
  Magdalena, 
  Colombia. 
  

  

  Distribution. 
  — 
  Known 
  only 
  from 
  the 
  northwestern 
  base 
  and 
  foot- 
  

   hills 
  of 
  the 
  Sierra 
  Nevada 
  de 
  Santa 
  Marta, 
  but 
  probably 
  ranges 
  

   throughout 
  the 
  lower 
  levels 
  of 
  the 
  western 
  and 
  northern 
  slopes 
  of 
  the 
  

   Sierra 
  Nevada. 
  

  

  Characters. 
  — 
  Pale 
  area 
  of 
  front 
  less 
  extensive, 
  upperparts 
  and 
  limbs 
  

   paler 
  than 
  in 
  hypoleucus 
  . 
  Cap 
  Prout's 
  Brown, 
  median 
  dorsal 
  region 
  

   Cinnamon 
  Brown, 
  forearm 
  and 
  foreleg 
  not 
  markedly 
  contrasting 
  in 
  

   color 
  with 
  back 
  and 
  sides 
  of 
  body; 
  hairs 
  of 
  belly 
  and 
  chest 
  Ochraceous- 
  

   Tawny 
  to 
  Cinnamon-Brown 
  and 
  silvery; 
  contrasting 
  pale 
  area 
  of 
  front 
  

   extending 
  well 
  over 
  upper 
  surface 
  of 
  shoulder 
  and 
  inner 
  side 
  of 
  upper 
  

   arm. 
  

  

  Measurements. 
  — 
  Of 
  a 
  male 
  and 
  female 
  topotype, 
  respectively: 
  

   Greatest 
  length 
  of 
  skull, 
  95.0, 
  92.7; 
  condylobasal 
  length, 
  72.3, 
  71.7; 
  

   zygomatic 
  breadth, 
  62.3, 
  61.9; 
  width 
  of 
  brain 
  case, 
  54.2, 
  51.6; 
  length 
  

   of 
  brain 
  case, 
  77,4, 
  72.1; 
  orbital 
  breadth, 
  53.2, 
  53.3; 
  greatest 
  width 
  

   across 
  maxillary 
  tooth 
  rows, 
  30.4, 
  30.9; 
  length, 
  upper 
  canine 
  to 
  M^, 
  

   27.8, 
  26.9; 
  length, 
  lower 
  canine 
  to 
  M3, 
  31.1, 
  29.0; 
  mandibular 
  depth 
  

   at 
  condyle, 
  27.8, 
  28.1 
  mm. 
  

  

  Remarks. 
  — 
  Of 
  available 
  material, 
  this 
  race 
  most 
  nearly 
  approaches 
  

   the 
  characters 
  ascribed 
  to 
  hypoleucus. 
  Inclusion 
  of 
  the 
  upper 
  surface 
  

   of 
  shoulders 
  in 
  the 
  whitish 
  frontal 
  area 
  is 
  more 
  marked 
  in 
  malitiosus 
  

   than 
  in 
  any 
  other 
  race, 
  with 
  the 
  possible 
  exception 
  of 
  hypoleucus. 
  

  

  Pusch 
  synonymized 
  malitiosus 
  with 
  the 
  Peruvian 
  cuscinus 
  on 
  the 
  

   basis 
  of 
  a 
  female 
  from 
  Santa 
  Marta 
  with 
  a 
  brown 
  frontal 
  tuft. 
  

  

  Specimens 
  examined. 
  — 
  Eight. 
  Bonda, 
  6 
  (C.N.H.M., 
  3; 
  CM., 
  3); 
  

   Trojas 
  de 
  Cataca, 
  Santa 
  Marta, 
  2 
  (CM.). 
  

  

  CEBUS 
  ALBIFRONS 
  CESARAE, 
  new 
  snbspecies 
  

  

  Holotype.— 
  Old 
  adult 
  male, 
  U.S.N.M. 
  No. 
  281588; 
  collected 
  August 
  

   24, 
  1942, 
  by 
  Philip 
  Hershkovitz, 
  original 
  number 
  525. 
  

  

  Type 
  locality. 
  — 
  Rio 
  Guaimaral, 
  a 
  channel 
  of 
  the 
  Rio 
  Cesar, 
  Mag- 
  

   dalena 
  Department, 
  Colombia; 
  altitude 
  140 
  meters. 
  

  

  Distribution. 
  — 
  Rio 
  Cesar 
  Valley 
  west 
  into 
  the 
  southern 
  and 
  eastern 
  

   slopes 
  of 
  the 
  Sierra 
  Nevada 
  de 
  Santa 
  Marta 
  to 
  approximately 
  500 
  

   meters 
  above 
  sea 
  level, 
  eastern 
  Magdalena 
  Department, 
  Colombia. 
  

  

  Characters. 
  — 
  Palest 
  of 
  the 
  Colombian-Venezuelan 
  races. 
  Cap 
  

   Cinnamon 
  or 
  Snuff 
  Brown; 
  median 
  dorsal 
  region, 
  forearm 
  and 
  foreleg 
  

   with 
  orangeous 
  and 
  contrasted 
  with 
  sides 
  of 
  back 
  and 
  trunk; 
  hairs 
  of 
  

   belly 
  and 
  chest 
  Ochraceous-Orange 
  to 
  pale 
  Ochraceous-Buff 
  and 
  

   silvery; 
  contrasting 
  pale 
  area 
  of 
  front 
  extending 
  over 
  variable 
  amounts 
  

   of 
  upper 
  surface 
  of 
  shoulder 
  and 
  inner 
  side 
  of 
  upper 
  arm. 
  

  

  Coloration 
  oj 
  holotype. 
  — 
  Hairs 
  of 
  sides 
  of 
  face, 
  superciliary 
  band, 
  

   chin, 
  throat, 
  sides 
  of 
  neck, 
  and 
  auricular 
  region. 
  Cartridge 
  Buff. 
  Cap 
  

  

  