﻿MAMMALS 
  OF 
  NORTHERN 
  COLOMBIA 
  — 
  HERSHKOVITZ 
  419 
  

  

  Obidos, 
  Para, 
  Brazil, 
  west 
  perhaps 
  to 
  Pebas 
  in 
  Loreto, 
  Peru; 
  and 
  in 
  

  

  Colombia, 
  between 
  the 
  Kios 
  Magdalena 
  and 
  Cauca 
  in 
  departments 
  

  

  of 
  Bolivar 
  and 
  Antioquia. 
  

  

  Included 
  species. 
  — 
  The 
  three 
  species 
  of 
  the 
  subgenus 
  Marikina 
  are 
  

  

  arranged 
  in 
  the 
  following 
  key: 
  

  

  1. 
  Chest 
  white, 
  sharply 
  contrasted 
  with 
  orange 
  or 
  reddish 
  of 
  belly; 
  greatest 
  width 
  

   across 
  pinna 
  (dry), 
  approximately 
  23.5-24.5 
  mm. 
  

  

  M. 
  (Marikina) 
  bicolor 
  (p. 
  421) 
  

   S. 
  Chest 
  yellow 
  to 
  reddish, 
  not 
  markedly 
  different 
  from 
  belly. 
  

  

  o. 
  Tail 
  sharply 
  bicolor, 
  dark 
  brown 
  above, 
  orange 
  beneath; 
  chin 
  naked 
  or 
  

   nearly 
  so; 
  hairs 
  of 
  throat 
  directed 
  backward, 
  not 
  forming 
  a 
  whorl; 
  greatest 
  

  

  width 
  across 
  pinna 
  (dry), 
  21-24 
  mm 
  M. 
  (Marikina) 
  martinsi 
  (p. 
  422) 
  

  

  b. 
  Tail 
  with 
  upper 
  side 
  not 
  markedly 
  different 
  from 
  lower; 
  chin 
  well 
  covered, 
  

   the 
  hairs 
  extending 
  from 
  whorl 
  of 
  throat 
  and 
  directed 
  forward; 
  greatest 
  

   width 
  across 
  pinna 
  (dry), 
  19-24 
  mm 
  M. 
  (Marikina) 
  leucopus 
  (p. 
  419) 
  

  

  MARIKINA 
  LEUCOPUS 
  GUnther 
  

  

  Hapale 
  leucopus 
  Gxjnther, 
  Proc. 
  Zool. 
  Soc. 
  London, 
  1876, 
  p. 
  743, 
  pi. 
  72. 
  

  

  Callithrix 
  leucopus, 
  Elliot, 
  A 
  review 
  of 
  the 
  Primates, 
  vol. 
  1, 
  p. 
  222, 
  1913 
  (descrip- 
  

   tion; 
  measurements; 
  selection 
  of 
  lectotype). 
  

  

  Seniocebus 
  pegasis 
  Elliot, 
  Bull. 
  Amer. 
  Mus. 
  Nat. 
  Hist., 
  vol. 
  32, 
  p. 
  252, 
  1913 
  

   (type 
  locality, 
  Puerto 
  Berrfo, 
  Rfo 
  Magdalena, 
  Antoquia, 
  Colombia). 
  

  

  Oedipomidas 
  leucopus, 
  Elliot, 
  Bull. 
  Amer. 
  Mus. 
  Nat. 
  Hist., 
  vol. 
  33, 
  p. 
  645, 
  1914 
  

   (synonymy 
  including 
  pegasis 
  Elliot). 
  — 
  Allen, 
  Bull. 
  Amer. 
  Mus. 
  Nat. 
  Hist., 
  

   vol. 
  35, 
  p. 
  228, 
  1916 
  (Puerto 
  Berrfo; 
  Malena, 
  west 
  of 
  Puerto 
  Berrfo; 
  Puerto 
  

   Valdivia, 
  Rfo 
  Cauca). 
  

  

  Lectotype. 
  — 
  Skin 
  and 
  skull, 
  British 
  Museum 
  (Natural 
  History) 
  No. 
  

   75.6.3.1; 
  collected 
  by 
  T. 
  K. 
  Salmon. 
  

  

  Type 
  locality. 
  — 
  Near 
  Medellin, 
  Antioquia, 
  Colombia. 
  

  

  Distribution. 
  — 
  In 
  Colombia 
  from 
  confluence 
  of 
  Rios 
  Magdalena 
  

   and 
  Cauca, 
  department 
  of 
  Bolivar, 
  north 
  into 
  department 
  of 
  Antio- 
  

   quia; 
  altitudinal 
  range 
  from 
  near 
  sea 
  level 
  to 
  approximately 
  1,000 
  

   meters 
  above. 
  The 
  species 
  does 
  not 
  occur 
  naturally 
  east 
  of 
  the 
  Rio 
  

   Magdalena 
  and 
  west 
  of 
  the 
  Rio 
  Cauca. 
  

  

  Coloration. 
  — 
  Front 
  of 
  face 
  from 
  lips 
  to 
  eyes 
  sparsely 
  covered 
  with 
  

   minute 
  whitish 
  hairs, 
  chin 
  with 
  ochi'aceous 
  to 
  brownish 
  hairs, 
  cheek 
  

   with 
  long 
  silvery 
  hairs; 
  forehead 
  and 
  crown 
  to 
  front 
  of 
  ears 
  well 
  

   covered 
  with 
  short 
  silvery 
  hairs 
  converging 
  to 
  form 
  a 
  fine 
  median 
  

   frontal 
  line; 
  back 
  of 
  head 
  between 
  ears 
  and 
  nape 
  like 
  back 
  but 
  with 
  

   pale 
  lining 
  reduced 
  or 
  absent. 
  Hairs 
  of 
  back 
  and 
  sides 
  Fuscous, 
  

   Hair 
  Brown, 
  or 
  Drab 
  with 
  terminal 
  portions 
  often 
  silvery, 
  or 
  yellowish 
  

   to 
  Ochraceous-Buff, 
  forming 
  a 
  liaing 
  thi'ough 
  which 
  brownish 
  basal 
  

   portions 
  are 
  visible. 
  Hairs 
  of 
  chest, 
  belly, 
  and 
  inner 
  side 
  of 
  limbs 
  

   Drab 
  basally, 
  Orange-Rufous 
  to 
  Mahogany 
  Red 
  terminally; 
  nearly 
  

   uniformly 
  Drab 
  hairs 
  of 
  throat 
  forming 
  a 
  whorl. 
  Outer 
  side 
  of 
  arm, 
  

   hand, 
  leg 
  and 
  foot 
  above 
  white 
  to 
  Ochraceous-Buff, 
  a 
  brownish 
  patch 
  

   on 
  ankle 
  and 
  metatarsus; 
  thigh 
  on 
  outer 
  side 
  grading 
  from 
  color 
  of 
  

   back 
  to 
  that 
  of 
  leg. 
  Tail 
  brownish 
  thinly 
  lined 
  with 
  silvery 
  to 
  

   ochraceous, 
  penciled 
  tip 
  uniformly 
  silvery 
  to 
  ochraceous. 
  

  

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