﻿76 
  CEBUS 
  

  

  peruanus; 
  and 
  C. 
  unicolor 
  Spix, 
  probably, 
  redescribed 
  as 
  C. 
  

   Havescens 
  cuscinus. 
  

   1907. 
  D. 
  G. 
  Elliot, 
  in 
  Annals 
  and 
  Magazine 
  of 
  Natural 
  History. 
  

   Cebus 
  apiculatus 
  described. 
  

  

  1909. 
  D. 
  G. 
  Elliot, 
  in 
  Bulletin 
  American 
  Museum 
  of 
  Natural 
  History, 
  

   New 
  York. 
  

  

  Cebus 
  capucinus 
  nigripectus, 
  and 
  Cebus 
  malitiosus 
  first 
  de- 
  

   scribed; 
  and 
  the 
  status 
  of 
  C. 
  capucinus 
  (Linn.), 
  and 
  C. 
  

   apella 
  (Linn.), 
  explained 
  and 
  fixed. 
  

  

  1910. 
  D. 
  G. 
  Elliot, 
  in 
  Annals 
  and 
  Magazine 
  of 
  Natural 
  History. 
  

   Cebus 
  versuta 
  and 
  Cebus 
  caliginosus 
  described. 
  

  

  GEOGRAPHICAL 
  DISTRIBUTION 
  OF 
  THE 
  SPECIES 
  AND 
  SUBSPECIES. 
  

  

  It 
  must 
  be 
  acknowledged 
  that 
  the 
  geographical 
  distribution 
  of 
  the 
  

   species 
  of 
  the 
  genus 
  Cebus 
  is 
  imperfectly 
  known. 
  Much 
  of 
  the 
  vast 
  

   territory 
  of 
  South 
  America 
  which 
  they 
  inhabit 
  is 
  unexplored, 
  and 
  we 
  

   are 
  entirely 
  ignorant 
  of 
  the 
  animals 
  to 
  be 
  found 
  in 
  it. 
  A 
  large 
  number 
  

   of 
  the 
  described 
  species 
  are 
  known 
  only 
  from 
  the 
  type 
  locality, 
  and 
  the 
  

   range 
  of 
  others 
  is 
  indefinite 
  and 
  unsatisfactory. 
  A 
  serious 
  difficulty 
  

   also 
  exists 
  in 
  the 
  fact, 
  that 
  it 
  is 
  often 
  uncertain 
  what 
  species 
  a 
  writer 
  

   is 
  referring 
  to, 
  for 
  although 
  he 
  employs 
  the 
  name 
  of 
  a 
  well 
  known 
  

   species, 
  he 
  frequently 
  has 
  in 
  mind 
  quite 
  a 
  different 
  one. 
  Hence 
  the 
  

   confusion 
  and 
  intricacy 
  of 
  the 
  synonymy. 
  Thus 
  the 
  C. 
  capucinus 
  of 
  

   Authors 
  is 
  not 
  the 
  C. 
  capucinus 
  Linnaeus, 
  and 
  the 
  C. 
  apella 
  Linnaeus, 
  

   is 
  seldom 
  recognizable 
  in 
  the 
  species 
  given 
  by 
  writers 
  under 
  that 
  name 
  ; 
  

   and 
  the 
  C. 
  gracilis 
  Gray 
  is 
  not 
  C. 
  gracilis 
  Spix, 
  nor 
  is 
  the 
  C. 
  robustus 
  

   Tschudi, 
  the 
  same 
  species 
  that 
  Kuhl 
  and 
  Wied 
  call 
  by 
  that 
  name. 
  

   Many 
  examples 
  of 
  this 
  confused 
  nomenclature 
  could 
  easily 
  be 
  given 
  to 
  

   prove 
  how 
  very 
  difficult 
  it 
  is 
  to 
  accurately 
  establish 
  the 
  species 
  intended, 
  

   and 
  unless 
  the 
  specimen 
  referred 
  to 
  is 
  extant 
  and 
  accessible, 
  too 
  often 
  a 
  

   correct 
  decision 
  is 
  impossible. 
  Fully 
  aware, 
  therefore, 
  of 
  the 
  great 
  

   limitation 
  to 
  our 
  knowledge, 
  the 
  writer 
  can 
  only 
  attempt 
  to 
  give 
  the 
  

   restricted 
  boundaries 
  of 
  the 
  dispersion 
  of 
  the 
  Cebi 
  which 
  have 
  been 
  

   ascertained 
  at 
  the 
  present 
  time. 
  The 
  most 
  northern 
  habitat 
  of 
  any 
  

   species 
  is 
  Central 
  America, 
  and 
  there, 
  from 
  and 
  including 
  Nicaragua 
  

   to 
  Panama, 
  C. 
  capucinus 
  is 
  found 
  ranging, 
  and 
  also 
  into 
  northern 
  

   South 
  America 
  to 
  Colombia. 
  To 
  the 
  north 
  of 
  Nicaragua 
  no 
  species 
  of 
  

   Cebus 
  is 
  found. 
  In 
  the 
  three 
  Guianas 
  : 
  English, 
  Dutch 
  and 
  French, 
  C. 
  

   apella 
  (Linn.), 
  dwells, 
  and 
  from 
  Cayenne 
  in 
  French 
  Guiana 
  C. 
  

   castaneus 
  was 
  brought, 
  its 
  type 
  locality 
  and 
  range 
  however 
  unknown. 
  

  

  