﻿MAMMALS 
  OF 
  NORTHERN 
  COLOMBIA 
  — 
  ^HERSHKOVITZ 
  391 
  

  

  El 
  Salado 
  (2 
  males, 
  2 
  females): 
  One 
  male 
  like 
  the 
  adult 
  female 
  

   from 
  Colonia 
  Agricola, 
  other 
  specimens 
  darker 
  and 
  indistinguishable 
  

   from 
  the 
  Cienaga 
  de 
  Gudjaro 
  series. 
  

  

  Measurements.- 
  — 
  Those 
  of 
  2 
  males 
  and 
  2 
  females, 
  respectively: 
  Head 
  

   and 
  body, 
  511, 
  546, 
  573, 
  493; 
  taU, 
  555, 
  615, 
  643, 
  606; 
  hind 
  foot, 
  145, 
  

   155, 
  146, 
  144; 
  ear, 
  36, 
  38, 
  36, 
  35; 
  greatest 
  length 
  of 
  skull, 
  114.1 
  111.3, 
  

   107.5, 
  107.1; 
  condylobasal 
  length, 
  108.1, 
  107.3, 
  96.7, 
  96.0; 
  zygomatic 
  

   breadth, 
  80.0, 
  72.2, 
  70.4, 
  66.2; 
  length 
  of 
  brain 
  case, 
  69.2 
  68.5, 
  69.2, 
  

   69.4; 
  mastoidal 
  width 
  of 
  brain 
  case, 
  53.6, 
  56.2, 
  53.3, 
  49.7; 
  greatest 
  

   width 
  across 
  maxillary 
  tooth 
  rows, 
  39.2, 
  41.1, 
  36.4, 
  34.7; 
  length 
  of 
  

   maxillary 
  tooth 
  row, 
  44.5, 
  41.8, 
  37.5, 
  36.9 
  mm. 
  

  

  Rio 
  Cesar 
  (8 
  males, 
  1 
  immature; 
  9 
  females, 
  2 
  immature): 
  Most 
  

   males 
  are 
  in 
  pale 
  phase 
  but 
  average 
  paler 
  than 
  similar 
  individuals 
  of 
  

   the 
  other 
  series 
  mentioned; 
  most 
  females 
  with 
  hairs 
  of 
  back 
  dark 
  

   tipped 
  but 
  average 
  slightly 
  paler 
  than 
  the 
  San 
  Pedro 
  and 
  Cienaga 
  de 
  

   Gudjaro 
  series. 
  Basal 
  portions 
  of 
  hairs 
  of 
  dorsal 
  surface 
  are 
  generally 
  

   darker 
  in 
  immature 
  or 
  young 
  than 
  in 
  fully 
  adult 
  individuals. 
  The 
  

   series 
  was 
  taken 
  from 
  August 
  20 
  to 
  October 
  16, 
  1942, 
  during 
  the 
  rainy 
  

   season. 
  There 
  is 
  no 
  apparent 
  relationship 
  between 
  date 
  of 
  capture 
  

   and 
  color 
  phase. 
  

  

  Measurements.- 
  — 
  Means 
  and 
  extremes 
  of 
  7 
  adult 
  males 
  followed 
  by 
  

   those 
  of 
  7 
  adult 
  females: 
  Head 
  and 
  body, 
  534 
  (522-552), 
  473 
  (459- 
  

   501); 
  tail, 
  657 
  (602-690), 
  619 
  (571-670); 
  ratio 
  of 
  tail 
  length 
  to 
  total 
  

   length, 
  55 
  percent 
  (51-56 
  percent), 
  57 
  percent 
  (54-60 
  percent); 
  hind 
  

   foot, 
  153 
  (150-160), 
  143 
  (138-153); 
  ear, 
  37 
  (35-41), 
  34 
  (32-36); 
  

   greatest 
  length 
  of 
  skull, 
  117.6 
  (115.6-120.7), 
  103.2 
  (101.0-106.3); 
  

   condylobasal 
  length, 
  109.4 
  (107.8-111.6), 
  92.4 
  (90.2-94.3); 
  zygomatic 
  

   breadth, 
  77.4 
  (73.0-81.5), 
  66.1 
  (62.7-67.7); 
  length 
  of 
  brain 
  case, 
  74.4 
  

   (71.8-77.8), 
  67.5 
  (66.4-69.1); 
  mastoidal 
  width 
  of 
  brain 
  case, 
  56.6 
  

   (54.6-58.5), 
  49.8 
  (48.2-51.8); 
  greatest 
  width 
  across 
  maxillary 
  tooth 
  

   rows, 
  38.0 
  (36.3-39.8), 
  35.4 
  (34.2-36.8); 
  length 
  of 
  maxillary 
  tooth 
  row, 
  

   42.4 
  (40.5-44.1), 
  35.4 
  (34.2-36.8) 
  mm. 
  

  

  Villanueva 
  (6 
  males, 
  two 
  immature; 
  6 
  females, 
  one 
  immature): 
  

   Three 
  males 
  and 
  two 
  females 
  may 
  be 
  classified 
  as 
  pale 
  phase 
  indi- 
  

   viduals. 
  These 
  do 
  no 
  appear 
  to 
  be 
  quite 
  as 
  pale 
  as 
  the 
  same 
  category 
  

   of 
  individuals 
  from 
  the 
  Rio 
  Cesar. 
  The 
  remaining 
  dark 
  specimens 
  

   are 
  Kke 
  those 
  from 
  the 
  Cesar. 
  Altogether, 
  they 
  average 
  slightly 
  

   darker 
  than 
  the 
  Cesar 
  series. 
  This 
  is 
  the 
  reverse 
  of 
  what 
  has 
  been 
  

   observed 
  heretofore 
  in 
  comparing 
  other 
  species 
  of 
  mammals 
  from 
  the 
  

   two 
  locahties. 
  The 
  series 
  was 
  taken 
  from 
  January 
  22 
  to 
  February 
  16, 
  

   1943, 
  during 
  the 
  dry 
  season. 
  

  

  Measurements. 
  — 
  Those 
  of 
  3 
  males 
  and 
  4 
  females, 
  respectively: 
  Head 
  

   and 
  body, 
  531, 
  493, 
  544; 
  510, 
  490, 
  490, 
  478; 
  taU, 
  602, 
  552, 
  574; 
  578, 
  

   578, 
  613, 
  549; 
  hind 
  foot, 
  155, 
  140, 
  143; 
  143, 
  132, 
  143, 
  145; 
  ear, 
  36, 
  34, 
  

  

  