﻿MAMMALS 
  OF 
  NORTHERN 
  COLOMBIA 
  — 
  HERSHKOVITZ 
  341 
  

  

  (458), 
  was 
  brought 
  to 
  the 
  Paris 
  Museum 
  from 
  Lisbon, 
  presumably 
  

   in 
  its 
  present 
  state, 
  a 
  mounted 
  specimen 
  with 
  skull 
  in 
  skin. 
  The 
  

   individual 
  is 
  extremely 
  faded 
  with 
  considerable 
  portions 
  of 
  hair 
  of 
  

   underparts, 
  head 
  and 
  face 
  missing. 
  It 
  is 
  said 
  to 
  have 
  originated 
  in 
  

   Brazil. 
  Being 
  based 
  on 
  an 
  actual 
  specimen, 
  jlavus 
  Geoffroy 
  is 
  not 
  

   strictly 
  the 
  same 
  as 
  jiavia 
  Schreber, 
  though 
  the 
  latter 
  was 
  cited 
  in 
  

   the 
  description 
  of 
  the 
  former. 
  Cebus 
  Jlavus 
  may 
  be 
  identical 
  with 
  

   C. 
  gracilis 
  (= 
  unicolor), 
  also 
  from 
  Brazil, 
  as 
  Wagner 
  (1855, 
  p. 
  90) 
  

   suggested. 
  In 
  any 
  case, 
  the 
  question 
  remains 
  whether 
  the 
  specimen 
  

   determined 
  as 
  Jlavus 
  by 
  Geoffroy 
  is 
  to 
  be 
  regarded 
  as 
  a 
  type 
  or 
  simply 
  

   as 
  a 
  specimen 
  referred 
  to 
  the 
  amended 
  form 
  of 
  the 
  nenaejlavia 
  Schreber. 
  

  

  For 
  some 
  unlmown 
  reason 
  the 
  name 
  Jlavus, 
  or 
  Jiavia, 
  was 
  prone 
  to 
  

   nomenclatorial 
  accidents. 
  Humboldt, 
  in 
  referring 
  to 
  Geoffroy 
  's 
  

   Jlavus, 
  wrote 
  it 
  as 
  " 
  Cebus 
  Julvus." 
  This 
  is 
  a 
  nomen 
  nudum, 
  as 
  nothing 
  

   that 
  can 
  be 
  construed 
  as 
  a 
  description 
  accompanies 
  this 
  name, 
  which 
  

   appeared 
  in 
  published 
  form 
  a 
  few 
  months 
  earlier 
  than 
  did 
  the 
  Jlavus 
  of 
  

   Geoffroy. 
  Desmarest 
  (1820, 
  p. 
  83), 
  because 
  of 
  a 
  typographical 
  error 
  

   pointed 
  out 
  by 
  I. 
  Geoffroy 
  (1851, 
  p. 
  44), 
  also 
  listed 
  Jlavus 
  as 
  Julvus. 
  

   However, 
  an 
  earlier 
  use 
  of 
  the 
  name 
  Julvus 
  was 
  made 
  by 
  Kerr 
  (1792, 
  

   p. 
  77), 
  who 
  described 
  Simia 
  (Sapajus) 
  trepidus 
  Julvus, 
  a 
  "tufted" 
  

   Cebus. 
  Elliot 
  (1913, 
  p. 
  93) 
  used 
  Jlavus 
  Geoffroy 
  to 
  replace 
  the 
  name 
  

   barbatus, 
  which 
  has 
  priority 
  over 
  it, 
  and 
  Pusch 
  (1941, 
  p. 
  193) 
  listed 
  

   Jlavus 
  Geoffroy 
  as 
  a 
  synonym 
  of 
  versicolor! 
  

  

  Cebus 
  albus 
  E. 
  Geoffroy 
  (1812, 
  p. 
  111). 
  A 
  complete 
  albino. 
  It 
  

   was 
  described 
  as 
  either 
  a 
  new 
  species 
  or 
  as 
  simply 
  an 
  albinistic 
  variety. 
  

   It 
  has 
  been 
  variously 
  considered 
  a 
  synonym 
  oi 
  Jlavus 
  and 
  barbatus. 
  

   Cabrera 
  (1917a, 
  p. 
  232) 
  properly 
  dismissed 
  albus 
  as 
  unidentifiable. 
  

  

  Cebus 
  griseus 
  Desmarest 
  (1820, 
  p. 
  81). 
  See 
  discussion, 
  above, 
  of 
  

   barbatus 
  Geoffroy. 
  

  

  Cebus 
  fulvus 
  Desmarest 
  (1820, 
  p. 
  83). 
  See 
  discussion, 
  above, 
  of 
  

   Jlavus 
  Geoffroy. 
  

  

  Cebus 
  unicolor 
  Spix 
  (1823, 
  p. 
  7, 
  pi. 
  4). 
  Described 
  from 
  Teffe, 
  Kio 
  

   Solimoes. 
  The 
  type 
  is 
  a 
  male 
  and, 
  judged 
  from 
  the 
  description 
  and 
  

   colored 
  figure, 
  is 
  a 
  member 
  of 
  the 
  albijrons 
  group. 
  

  

  Cebus 
  gracilis 
  Spix 
  (1823, 
  p. 
  8, 
  pi. 
  5). 
  From 
  the 
  same 
  locality 
  as 
  

   unicolor. 
  It 
  is 
  said 
  to 
  range 
  from 
  "la 
  ville 
  de 
  Rio 
  Negro 
  vers 
  le 
  

   Perou." 
  The 
  description 
  and 
  figure 
  of 
  gracilis, 
  apparently 
  that 
  of 
  a 
  

   female, 
  differ 
  little 
  from 
  those 
  of 
  unicolor. 
  In 
  fact, 
  the 
  differences 
  are 
  

   no 
  greater 
  than 
  may 
  be 
  observed 
  between 
  two 
  individuals 
  of 
  the 
  same 
  

   series 
  but 
  of 
  different 
  age 
  aud 
  sex. 
  Specimens 
  recorded 
  by 
  Tate 
  

   (1939, 
  p. 
  213), 
  from 
  the 
  upper 
  Rio 
  Negi'o 
  and 
  the 
  Casiquiare, 
  as 
  C. 
  

   albijrons 
  show 
  a 
  remarkably 
  close 
  resemblance 
  to 
  both 
  gracilis 
  and 
  

   unicolor 
  and 
  may 
  be 
  classified 
  as 
  C. 
  albijrons 
  unicolor. 
  Authors 
  have 
  

   generally 
  used 
  the 
  name 
  gracilis 
  instead 
  of 
  unicolor 
  which 
  has 
  page 
  

   priority, 
  for 
  the 
  brown 
  white-fronted 
  Cebus 
  of 
  the 
  Amazonian 
  region. 
  

  

  