﻿50 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.98 
  

  

  squamipes. 
  Other 
  types 
  examined 
  in 
  the 
  British 
  Museum 
  reveal 
  thai 
  

   Nectomys 
  fulvinus 
  Thomas 
  and 
  N. 
  grandls 
  Thomas 
  were 
  correctly 
  

   referred 
  by 
  the 
  writer 
  to 
  N. 
  squamipes^ 
  the 
  first 
  as 
  a 
  synonym 
  of 
  N. 
  s. 
  

   apicalis, 
  the 
  second 
  as 
  a 
  subspecies. 
  It 
  was 
  discovered 
  also 
  that 
  O. 
  

   barhacoas 
  ochrinus 
  Thomas 
  is 
  practically 
  identical 
  with 
  Nectomys 
  

   {Sig^nodontomys) 
  alfari 
  esmeraldarum. 
  The 
  original 
  Oryzomys 
  

   barhacoas 
  Allen, 
  in 
  the 
  American 
  Museum 
  of 
  Natural 
  History, 
  also 
  

   is 
  referable 
  to 
  N. 
  a. 
  esmeraldarum. 
  

  

  The 
  above-named 
  forms 
  and 
  the 
  additional 
  Colombian 
  material 
  are 
  

   discussed 
  more 
  fully 
  below. 
  Thanks 
  are 
  expressed 
  to 
  the 
  authorities 
  

   of 
  the 
  American 
  Museum 
  of 
  Natural 
  History 
  for 
  permission 
  to 
  de- 
  

   scribe 
  as 
  new 
  a 
  specimen 
  of 
  Nectomys 
  not 
  identified 
  in 
  the 
  writer's 
  

   earlier 
  report 
  on 
  the 
  genus. 
  Capitalized 
  color 
  terms 
  are 
  from 
  Ridg>vay 
  

   ("Color 
  Standards 
  and 
  Color 
  Nomenclature," 
  Washington, 
  1912). 
  

   Northern 
  Colombian 
  localities 
  mentioned 
  in 
  the 
  text 
  are 
  shown 
  on 
  

   the 
  map 
  accompanying 
  the 
  first 
  preliminary 
  report 
  of 
  this 
  series 
  (Proc. 
  

   U. 
  S. 
  Nat. 
  Mus., 
  vol. 
  97, 
  fig. 
  1, 
  1947) 
  . 
  

  

  NECTOMYS 
  SQUAMIPES 
  APICALIS 
  Peters 
  

  

  Nectomys 
  apicalis 
  Peters, 
  Abh. 
  Akad. 
  Wiss. 
  Berlin, 
  1861, 
  p. 
  152, 
  pi. 
  1, 
  fig. 
  1, 
  pi. 
  2, 
  

   figs. 
  3-3b 
  (type 
  locality, 
  "Guayaquil"; 
  redetermined 
  as 
  Tena, 
  eastern 
  

   Ecuador, 
  by 
  Hershkovitz, 
  Mus. 
  Zool. 
  Univ. 
  Michigan 
  Misc. 
  Publ. 
  No. 
  58, 
  p. 
  25, 
  

   1944). 
  

  

  Nectomys 
  fulvinus 
  Thomas, 
  Ann. 
  Mag. 
  Nat. 
  Hist., 
  ser. 
  6, 
  vol. 
  19, 
  p. 
  499, 
  1897 
  

   (type 
  locality, 
  "Quito"; 
  redetermined 
  as 
  eastern 
  Ecuador, 
  probably 
  near 
  

   Tena, 
  by 
  Hershkovitz, 
  op. 
  cit., 
  p. 
  26). 
  

  

  Nectomys 
  squamipes 
  apicalis, 
  Hershkovitz, 
  Mus. 
  Zool. 
  Univ. 
  Michigan 
  Misc. 
  Publ. 
  

   No. 
  58, 
  pp. 
  25, 
  52, 
  1944 
  (characters, 
  distribution, 
  synonymy). 
  

  

  Nectomys 
  squamipes 
  subspecies 
  I, 
  Hershkovitz, 
  Mus. 
  Zool. 
  Univ. 
  Michigan 
  Misc. 
  

   Publ. 
  No. 
  58, 
  p. 
  65, 
  1944 
  (Colombia: 
  Villavicencio, 
  Meta 
  ; 
  Guaicaramo, 
  north- 
  

   east 
  of 
  Villavicencio 
  ; 
  Medina, 
  eastern 
  Cundiuamarca 
  ; 
  Mambita, 
  eastern 
  Cun- 
  

   dinamarca). 
  

  

  The 
  specimens 
  from 
  the 
  upper 
  Rio 
  Meta, 
  contributed 
  by 
  Hermano 
  

   Niceforo 
  Maria, 
  include 
  thi-ee 
  individuals 
  from 
  Medina 
  (only 
  one 
  

   adult) 
  and 
  an 
  adult 
  from 
  Guaicaramo. 
  They 
  do 
  not 
  reveal 
  more 
  than 
  

   has 
  been 
  described 
  (Hershkovitz, 
  op. 
  cit.., 
  p. 
  65). 
  They 
  show 
  no 
  near 
  

   relationship 
  to 
  the 
  water 
  rats 
  collected 
  by 
  the 
  author 
  in 
  the 
  Lake 
  

   Maracaibo 
  Basin 
  of 
  northern 
  Colombia. 
  It 
  seems 
  best, 
  therefore, 
  to 
  

   refer 
  the 
  eastern 
  Colombian 
  rats 
  to 
  apicalis, 
  the 
  form 
  they 
  resemble 
  

   most. 
  

  

  The 
  type 
  specimen 
  of 
  Nectomys 
  fulvinus 
  Thomas, 
  in 
  the 
  British 
  

   Museum, 
  is 
  a 
  "tawny 
  phase" 
  individual. 
  This 
  accounts 
  for 
  its 
  having 
  

   been 
  originally 
  distinguished 
  "from 
  all 
  others 
  by 
  its 
  deep 
  fulvous 
  

   color 
  which 
  more 
  nearly 
  resembles 
  that 
  of 
  some 
  of 
  the 
  Couesi 
  group 
  of 
  

   Oryzomys.''^ 
  It 
  agrees 
  completely 
  with 
  eastern 
  Ecuadorian 
  apicalis 
  

  

  