﻿74 
  CEBUS 
  

  

  have 
  a 
  pathetic 
  force: 
  "The 
  distinction 
  (sic) 
  of 
  the 
  species 
  of 
  

   the 
  American 
  Monkeys 
  is 
  very 
  difficult, 
  and 
  perhaps 
  the 
  genus 
  

   Cebus 
  the 
  most 
  difficult 
  of 
  all. 
  Next 
  to 
  the 
  difficulty 
  of 
  dis- 
  

   tinguishing 
  them 
  is 
  that 
  of 
  determining 
  the 
  names 
  which 
  have 
  

   been 
  applied 
  to 
  them 
  by 
  various 
  Authors." 
  

  

  1870. 
  /. 
  E. 
  Gray, 
  List 
  of 
  Monkeys, 
  Lemurs 
  and 
  Fruit-eating 
  Bats, 
  

   in 
  the 
  Collection 
  of 
  the 
  British 
  Museum. 
  

  

  The 
  species 
  represented 
  in 
  the 
  National 
  Collection 
  are 
  placed 
  

   in 
  Section 
  II, 
  Trichiura, 
  Tribe 
  III, 
  Cebina, 
  and 
  arranged 
  into 
  

   groups 
  according 
  to 
  the 
  color 
  of 
  the 
  fur, 
  or 
  the 
  manner 
  in 
  

   which 
  the 
  Author 
  supposes 
  the 
  hair 
  was 
  directed 
  upon 
  the 
  

   crown 
  of 
  the 
  head 
  during 
  the 
  life 
  of 
  the 
  animals; 
  but 
  these 
  

   methods 
  do 
  not 
  agree 
  in 
  their 
  arrangement 
  for 
  each 
  one 
  con- 
  

   tains 
  different 
  species 
  in 
  its 
  group. 
  In 
  his 
  own 
  arrangement 
  he 
  

   follows 
  the 
  one 
  indicating 
  the 
  growth 
  of 
  hair 
  on 
  the 
  head, 
  as 
  

   given 
  in 
  his 
  paper 
  in 
  1865 
  with 
  its 
  VI 
  groups. 
  No. 
  I 
  contains 
  

   but 
  a 
  single 
  species, 
  C. 
  leucogenys 
  Gray, 
  = 
  C. 
  cirrifer 
  

   (Humb.). 
  II 
  has 
  four 
  species, 
  C. 
  apella 
  (Linn.) 
  ; 
  C. 
  palli- 
  

   dus 
  Gray, 
  first 
  described; 
  C. 
  cirrifer 
  (Humb.); 
  and 
  C. 
  

   vellerosus 
  I. 
  Geoff. 
  Ill 
  contains 
  six 
  species 
  : 
  C. 
  capucinus 
  = 
  

   C. 
  apella 
  (Linn.); 
  and 
  var.? 
  C. 
  libidinosus 
  Spix, 
  as 
  a 
  

   synonym!; 
  C. 
  xanthocephalus 
  Spix, 
  = 
  C. 
  variegatus 
  

   (Humb.) 
  ; 
  C. 
  albifrons 
  (Humb.) 
  ; 
  C. 
  hypoleucus 
  (Humb.), 
  = 
  

   C. 
  capucinus 
  (Linn.) 
  ; 
  C. 
  leucocephalus 
  Gray, 
  = 
  C. 
  albifrons 
  

   (Humb.) 
  ; 
  and 
  C. 
  Havescens 
  Gray, 
  == 
  C. 
  unicolor 
  Spix. 
  IV 
  

   has 
  two 
  species 
  : 
  C. 
  robustus 
  Max., 
  = 
  C. 
  variegatus 
  E. 
  Geoff. 
  ; 
  

   and 
  C. 
  annellatus 
  Gray, 
  = 
  C. 
  apella 
  (Linn.). 
  V 
  has 
  also 
  two 
  

   species: 
  C. 
  chrysopus 
  F. 
  Cuv. 
  ; 
  and 
  C. 
  subcristatus 
  Gray, 
  = 
  

   C. 
  variegatus 
  E. 
  Geoff. 
  VI 
  has 
  the 
  remaining 
  species 
  C. 
  

   capillatus 
  Gray, 
  = 
  C. 
  variegatus 
  E. 
  Geoffroy. 
  

  

  1876. 
  Schlegel, 
  Museum 
  d'Histoire 
  Naturelle 
  des 
  Pays-Bas. 
  Simice. 
  

   A 
  careful 
  review 
  of 
  the 
  species 
  of 
  Cebus 
  founded 
  upon 
  the 
  

   examples 
  in 
  the 
  collection 
  of 
  the 
  Museum 
  in 
  Leyden. 
  While 
  

   recognizing 
  the 
  earlier 
  descriptions 
  of 
  Linnaeus' 
  Simia 
  apella 
  

   and 
  Simia 
  capucinus, 
  he 
  does 
  not 
  adopt 
  the 
  latter 
  name 
  for 
  C. 
  

   hypoleucus 
  (Humboldt), 
  because 
  in 
  the 
  original 
  description 
  he 
  

   finds 
  "corpus 
  atrum," 
  while 
  in 
  the 
  Systema 
  Naturae 
  the 
  body 
  

   is 
  given 
  as 
  "corpus 
  fuscum." 
  Atrum, 
  the 
  Author 
  considers, 
  

   means 
  sombre, 
  obscure, 
  dark, 
  ("sombre, 
  obscur, 
  tenebreux,") 
  

   which 
  is 
  contrary 
  to 
  "nigrum" 
  or 
  black, 
  employed 
  to 
  describe 
  

   the 
  cap 
  on 
  the 
  crown, 
  and 
  therefore 
  does 
  not 
  accurately 
  portray 
  

  

  