﻿NO. 
  1129. 
  XEW 
  MAMMALS 
  FROM 
  THE 
  MEXICAN 
  BORDER— 
  MEARXS. 
  471 
  

  

  the 
  hairs, 
  those 
  in 
  the 
  vertebral 
  area 
  being 
  pointed 
  with 
  brownish 
  

   blaclc. 
  It 
  appears 
  to 
  be 
  a 
  larger 
  animal 
  than 
  the 
  mule 
  deer 
  of 
  the 
  

   Eastern 
  Desert 
  Tract, 
  and, 
  unless 
  the 
  specimens 
  brought 
  home 
  by 
  our 
  

   party 
  are 
  abnormal, 
  its 
  horns 
  are 
  heavier 
  and 
  more 
  divergent, 
  being 
  

   remarkable 
  for 
  the 
  great 
  length 
  of 
  the 
  beam 
  before 
  forking. 
  In 
  a 
  

   youngish 
  specimen 
  from 
  the 
  Sonoyta 
  Valley 
  (No. 
  .jOOIO, 
  U.S.N.M.), 
  the 
  

   distance 
  from 
  the 
  burr 
  to 
  the 
  first 
  fork, 
  following 
  the 
  curve 
  of 
  the 
  beam, 
  

   is 
  320 
  mm. 
  The 
  total 
  expanse 
  of 
  this 
  pair 
  of 
  horns 
  is 
  020. 
  They 
  are 
  

   doubly 
  dichotomous 
  throughout, 
  having 
  four 
  points, 
  besides 
  a 
  basal 
  

   snag, 
  on 
  each 
  horn. 
  Another 
  pair 
  (Xo. 
  G0855, 
  U.S.X.M.) 
  belonged 
  to 
  a 
  

   fully 
  adult 
  animal, 
  killed 
  at 
  Black 
  Butte, 
  on 
  the 
  Colorado 
  Desert 
  near 
  

   the 
  "volcanoes'' 
  or 
  mud 
  geysers, 
  Lower 
  California. 
  This 
  was 
  one 
  of 
  six 
  

   that 
  were 
  killed 
  by 
  Mr. 
  Samuel 
  Cameron, 
  one 
  of 
  our 
  guides, 
  during 
  the 
  

   winter 
  of 
  1803-94. 
  The 
  beam 
  is 
  unusually 
  stout, 
  and 
  has 
  an 
  extent 
  of 
  

   310 
  mm. 
  before 
  forking, 
  and 
  the 
  horns 
  have 
  a 
  total 
  expanse 
  of 
  775» 
  

   The 
  horns 
  are 
  also 
  doubly 
  dichotomous. 
  

  

  