﻿NO. 
  1132. 
  XEJV 
  MAMMALS 
  FROM 
  THE 
  MEXICAN 
  BORDEE—MEARXS. 
  5')5 
  

  

  ear 
  from 
  crown, 
  15; 
  length 
  of 
  liind 
  foot, 
  34. 
  Sknll 
  measuring 
  20.5 
  by 
  

   35 
  mm. 
  in 
  extreme 
  dimensions. 
  The 
  nasals 
  are 
  expanded 
  into 
  a 
  spatu- 
  

   late 
  extremity, 
  as 
  in 
  tlie 
  Neotoma 
  of 
  the 
  same 
  region. 
  This 
  form, 
  

   thongli 
  as 
  pale 
  as 
  that 
  of 
  the 
  Eastern 
  Desert, 
  described 
  above, 
  may 
  be 
  

   instantly 
  distinguished 
  by 
  its 
  yellowish 
  instead 
  of 
  grayish 
  coloration, 
  

   and 
  by 
  the 
  spatulate 
  terminal 
  enlargement 
  of 
  the 
  nasal 
  bones. 
  

  

  Oeogrophical 
  range. 
  — 
  Found 
  near 
  the 
  waters 
  of 
  the 
  lower 
  Colorado 
  

   Kiver, 
  in 
  the 
  Western 
  Desert 
  Tract. 
  

  

  