﻿Races 
  of 
  African 
  Unyalates. 
  37 
  

  

  lieavy 
  black 
  stripe 
  above. 
  Thighs 
  rniicli 
  like 
  back, 
  hind 
  legs 
  

   from 
  hocks 
  very 
  light 
  yellowish 
  (about 
  maize-yellow 
  no. 
  1, 
  

   Rep.), 
  and 
  with 
  a 
  black 
  patch 
  and 
  ring 
  just 
  above 
  hoofs. 
  

   Fore 
  legs 
  similar 
  in 
  colour 
  to 
  hind 
  legs, 
  but 
  less 
  speckled 
  

   above 
  wrists. 
  The 
  usual 
  black 
  band 
  ])resent 
  only 
  in 
  some 
  

   specimens, 
  where 
  it 
  sometimes 
  extends 
  almost 
  to 
  below 
  

   shoulders 
  ; 
  in 
  the 
  type-specimen 
  it 
  is 
  entirely 
  absent, 
  only 
  

   the 
  black 
  patch 
  and 
  ring 
  above 
  hoofs 
  are 
  developed. 
  

  

  Skull. 
  Larger 
  than 
  -S. 
  ff. 
  abyssinica, 
  with 
  more 
  projecting 
  

   orbits 
  and 
  larger 
  buUse. 
  

  

  Dimensions 
  of 
  an 
  adult 
  male 
  skull 
  (no. 
  637). 
  Greatest 
  

   length 
  168 
  mm.; 
  basal 
  length 
  142; 
  palatal 
  length 
  80; 
  

   zygomatic 
  width 
  74; 
  postorbital 
  width 
  72'2 
  ; 
  occipital 
  

   width 
  493 
  ; 
  muzzle 
  to 
  orbit 
  83"5 
  ; 
  nasals 
  53*3 
  x 
  32 
  ; 
  length 
  

   ot' 
  upper 
  tooth-row 
  (alv.) 
  46 
  ; 
  breadth 
  of 
  bulla 
  at 
  anterior 
  

   margin 
  of 
  auditory 
  meatus 
  l4"6. 
  

  

  This 
  duiker 
  differs 
  from 
  all 
  its 
  allies 
  by 
  its 
  pale 
  colour 
  ; 
  

   from 
  its 
  eastern 
  representatives, 
  S. 
  g. 
  abyssinicus 
  and 
  S. 
  g. 
  

   roosevelli, 
  it 
  is 
  also 
  distinguished 
  by 
  its 
  superior 
  size. 
  

  

  Ourebia 
  uurebi 
  durcas, 
  subsp. 
  n. 
  

  

  Type 
  locality. 
  Bahr 
  Keeta, 
  N.E. 
  of 
  Ft. 
  Archambault, 
  

   Upper 
  Shari 
  district. 
  

  

  Type. 
  Adult 
  ^. 
  Senckenberg 
  Museum, 
  Frankfurt-a.-M. 
  

   Journal 
  nos. 
  316 
  (skin), 
  322 
  (skull). 
  Collected 
  in 
  February 
  

   1911 
  by 
  Dr. 
  H. 
  Schubotz. 
  

  

  Nearly 
  allied 
  to 
  O. 
  ourebi 
  niontana 
  from 
  Abyssinia, 
  but 
  

   distinguished 
  by 
  its 
  smaller 
  size 
  and 
  richer 
  colour. 
  

  

  Upperside 
  dull 
  orange-fawn 
  (hazelno.4/llep.deCouleurs^), 
  

   lightei' 
  on 
  the 
  sides 
  and 
  neck 
  ; 
  thighs 
  decidedly 
  paler 
  (no. 
  1) 
  ; 
  

   the 
  colour 
  of 
  the 
  thighs 
  is 
  continued 
  down 
  tlie 
  anterior 
  and 
  

   posterior 
  side 
  of 
  the 
  hind 
  legs, 
  whereas 
  the 
  sides 
  are 
  very 
  

   pale 
  bv;ffy 
  ; 
  fore 
  legs 
  like 
  thighs. 
  At)ove 
  the 
  hoofs 
  the 
  legs 
  

   are 
  pale 
  bufty. 
  Forehead 
  and 
  middle 
  portion 
  of 
  face 
  like 
  

   back, 
  cheeks 
  decidedly 
  paler 
  (hazel 
  no. 
  1). 
  Above 
  the 
  eyes 
  

   the 
  usual 
  white 
  streak 
  and 
  on 
  the 
  vertex 
  a 
  distinct 
  dark 
  

   brown 
  patch, 
  which 
  is 
  less 
  conspicuous 
  in 
  the 
  type-specimen. 
  

   Back 
  of 
  ears 
  pale 
  fawn, 
  with 
  a 
  large 
  blackish 
  patch; 
  inside 
  

   of 
  ears 
  with 
  long 
  white 
  hairs. 
  Underside 
  of 
  body 
  yellowish 
  

   white. 
  Tail 
  above 
  somewhat 
  darker 
  than 
  back; 
  below 
  white 
  

   at 
  base, 
  deep 
  rusty 
  at 
  tip, 
  and 
  with 
  some 
  black 
  hairs 
  in 
  one 
  

   specimen. 
  

  

  Skull. 
  j\luch 
  as 
  in 
  0. 
  o. 
  montana, 
  but 
  smaller, 
  with 
  narrower 
  

   brain-case, 
  narrower 
  bullae, 
  and 
  much 
  deeper 
  hyoidal 
  pits. 
  

  

  Dimensions 
  of 
  type 
  skull. 
  Greatest 
  length 
  171'.") 
  mm.; 
  

  

  