﻿370 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.98 
  

  

  Marta. 
  Its 
  fore 
  and 
  hind 
  limbs 
  are 
  redder, 
  especially 
  on 
  undersiirface, 
  

   cap 
  paler 
  and 
  the 
  pale 
  frontal 
  area 
  considerably 
  more 
  restricted 
  in 
  

   extension. 
  Intergrades 
  may 
  occur 
  along 
  the 
  northern 
  slope 
  of 
  the 
  

   Sierra 
  Nevada 
  and 
  the 
  northwestern 
  slope 
  of 
  the 
  Sierra 
  de 
  Perijd. 
  

   The 
  wi'iter 
  roamed 
  widely 
  over 
  the 
  northern 
  half 
  of 
  the 
  Sierra 
  de 
  

   Perijd, 
  mostly 
  on 
  the 
  Colombian 
  side, 
  from 
  November 
  1942 
  to 
  March 
  

   1943, 
  but 
  failed 
  to 
  encounter 
  a 
  single 
  Cebus. 
  However, 
  the 
  existence 
  

   of 
  micos 
  in 
  the 
  area 
  concerned 
  had 
  been 
  reported 
  to 
  him 
  on 
  a 
  few 
  

   occasions 
  and 
  evidence 
  of 
  their 
  raids 
  on 
  maize 
  fields 
  was 
  noted. 
  

  

  Monkeys 
  recorded 
  as 
  Cebus 
  apella 
  leucocephalus 
  by 
  Osgood 
  in 
  1912 
  

   were 
  seen 
  by 
  that 
  author 
  near 
  El 
  Panorama, 
  Rio 
  Aurare, 
  Lake 
  Mara- 
  

   caibo, 
  opposite 
  the 
  town 
  of 
  Maracaibo, 
  Venezuela. 
  No 
  specimens 
  

   were 
  preserved. 
  Cabrera 
  (1917, 
  p. 
  230) 
  hazarded 
  the 
  opinion 
  that 
  the 
  

   monkeys 
  were 
  probably 
  C. 
  nigrivittatus 
  brunneus. 
  The 
  Rio 
  Aurare 
  is 
  

   so 
  near 
  areas 
  known 
  to 
  be 
  inhabited 
  by 
  albifrons 
  and 
  nigrivittatus 
  that 
  

   either 
  species, 
  or 
  both, 
  might 
  occur 
  there. 
  However, 
  Osgood's 
  

   earlier 
  (1910) 
  and 
  accurate 
  identification 
  of 
  the 
  Orope 
  series 
  as 
  

   leucocephalus 
  is 
  persuasive 
  evidence 
  for 
  regarding 
  micos 
  of 
  the 
  more 
  

   northern 
  locality 
  as 
  representing 
  the 
  same 
  species, 
  though 
  not 
  neces- 
  

   sarily 
  the 
  same 
  race. 
  They 
  are 
  referred, 
  provisionally, 
  to 
  adustus. 
  

  

  Specimens 
  examined. 
  — 
  Three. 
  Rio 
  Cogollo, 
  Zulia, 
  Venezuela, 
  3 
  

   (C.N.H.M.). 
  

  

  CEBUS 
  ALBIFRONS 
  ALBIFRONS 
  Humboldt 
  

  

  (C/. 
  p. 
  337, 
  for 
  nomenclatorial 
  discussion) 
  

  

  Simia 
  albifrons 
  Humboldt, 
  RecueU 
  d'observations 
  de 
  zoologie 
  et 
  d'anatomie 
  

   compar^e, 
  vol. 
  1, 
  pp. 
  324-356, 
  1812 
  [1811]. 
  

  

  Cehus 
  albifrons, 
  Elliot, 
  A 
  review 
  of 
  the 
  Primates, 
  vol. 
  2, 
  p. 
  88, 
  1913 
  (part; 
  

   references 
  to 
  albifrons 
  Humboldt 
  only). 
  — 
  Cabrera, 
  Rev. 
  Real. 
  Acad. 
  Cienc, 
  

   Madrid, 
  vol. 
  16, 
  ser. 
  2, 
  p. 
  228, 
  1917. 
  — 
  Cruz 
  Lima, 
  Mammals 
  of 
  Amazonia, 
  

   Contrib, 
  Mus. 
  Paraense 
  Emilio 
  Goeldi 
  Hist. 
  Nat. 
  Etnogr., 
  p. 
  149, 
  1945 
  (no 
  

   distributional 
  records). 
  

  

  Type. 
  — 
  No 
  specimens 
  preserved; 
  description 
  most 
  probably 
  based 
  

   on 
  an 
  individual 
  observed 
  in 
  captivity 
  in 
  Maipures. 
  

  

  Type 
  locality. 
  — 
  See 
  Distribution. 
  

  

  Distribution. 
  — 
  Said 
  to 
  be 
  the 
  banks 
  of 
  the 
  Orinoco 
  in 
  the 
  region 
  of 
  

   the 
  cataracts 
  from 
  Maipures 
  to 
  Apures 
  (Venezuelan-Colombian 
  

   boundary), 
  and 
  the 
  neighborhood 
  of 
  the 
  extinct 
  mission 
  of 
  Santa 
  

   Barbara 
  near 
  the 
  mouth 
  of 
  the 
  Rio 
  Ventuari. 
  

  

  Characters. 
  — 
  Known 
  only 
  from 
  original 
  description 
  and 
  comparisons. 
  

  

  "Le 
  Matchi 
  du 
  Haut-Or^noque, 
  que 
  les 
  Indiens 
  Guarekens 
  appel- 
  

   lent 
  Ouavapavi, 
  a 
  0. 
  378 
  m. 
  (14 
  pouces) 
  de 
  long 
  du 
  sommet 
  de 
  la 
  tete 
  h 
  

   I'origine 
  de 
  la 
  queue: 
  il 
  a 
  la 
  face 
  gris-bieuatre, 
  a 
  I'exception 
  des 
  orbites 
  

   et 
  du 
  front 
  qui 
  sont 
  d'un 
  blanc 
  pur. 
  Le 
  contraste 
  de 
  ces 
  deux 
  couleurs 
  

   fait 
  distinguer 
  au 
  premier 
  abord 
  I' 
  Ouavapavi, 
  que 
  je 
  designe 
  sous 
  le 
  

   nom 
  de 
  Simia 
  albijrons, 
  du 
  Sai 
  [C. 
  nigrivittatus] 
  et 
  du 
  Sajou 
  ordinaire 
  

  

  