﻿7teio 
  Mammals 
  fi'.yin 
  the 
  Malay 
  Peninsula. 
  220 
  

  

  specimens 
  known 
  are 
  the 
  types 
  from 
  the 
  valley 
  of 
  the 
  

   Sittang, 
  Lower 
  Peg^n, 
  over 
  500 
  miles 
  distant. 
  Amongst 
  

   local 
  forms 
  it 
  is 
  rearlily 
  distinguished 
  from 
  E. 
  creniurivenier 
  

   by 
  its 
  greater 
  size 
  and 
  bicolor 
  tail, 
  not 
  strongly 
  [leniciliate 
  at 
  

   tlie 
  tip, 
  and 
  from 
  E.jerdoni 
  h/ikit 
  by 
  longer 
  less 
  markedly 
  

   bicolor 
  tail, 
  and 
  by 
  its 
  richer 
  colouring. 
  It 
  agrees 
  with 
  both 
  

   and 
  differs 
  from 
  all 
  the 
  other 
  local 
  forms 
  in 
  the 
  greenish- 
  

   grey 
  bases 
  of 
  the 
  dorsal 
  spines. 
  

  

  Epiinys 
  jerdoni 
  pan, 
  subsp. 
  n. 
  

  

  Type. 
  — 
  Adnlt 
  male 
  (skin 
  and 
  skull), 
  No, 
  80/13, 
  Fede- 
  

   rated 
  Malay 
  States 
  Museum, 
  collected 
  on 
  the 
  hills 
  of 
  Koh 
  

   Samui, 
  N.E. 
  Malay 
  Peninsula, 
  15th 
  May, 
  1913, 
  by 
  11. 
  C. 
  

   Robinson 
  and 
  E. 
  Seimund. 
  Original 
  no. 
  5351. 
  

  

  Characters. 
  — 
  A 
  spiny 
  rat 
  of 
  the 
  jerdoni 
  group, 
  with 
  bi- 
  

   color 
  tail, 
  considerably 
  exceeding 
  head 
  and 
  body 
  in 
  length, 
  

   but 
  relatively 
  shorter 
  than 
  that 
  of 
  the 
  mainland 
  form. 
  

  

  Colour. 
  — 
  Above 
  mingled 
  ochreous 
  buff 
  and 
  dark 
  brown, 
  

   the 
  former 
  predominating 
  on 
  the 
  sides 
  of 
  the 
  head 
  and 
  

   neck, 
  below 
  pure 
  huffy 
  white, 
  sharply 
  deHned 
  from 
  the 
  sides; 
  

   hands 
  and 
  feet 
  whitish, 
  the 
  median 
  areas 
  brownish. 
  Bases 
  

   of 
  the 
  spines 
  greenish 
  grey. 
  

  

  Skull 
  and 
  teeth. 
  — 
  Not 
  differing 
  materially 
  from 
  those 
  of 
  

   E. 
  j. 
  bukit 
  *, 
  but 
  with 
  the 
  anterior 
  margin 
  of 
  the 
  meso- 
  

   pterygoid 
  space 
  more 
  abruptly 
  truncate, 
  less 
  rounded 
  ; 
  

   rostrum 
  somewhat 
  heavier, 
  and 
  nasals 
  longer. 
  

  

  Measurements. 
  — 
  Collectors^ 
  external 
  measurements 
  (taken 
  

   in 
  the 
  He^li) 
  : 
  — 
  

  

  Head 
  and 
  body 
  149 
  (158 
  f) 
  mm.; 
  tail 
  174 
  (192) 
  ; 
  hind 
  

   foot 
  27-5 
  (30-0). 
  

  

  Cranial 
  measurements 
  : 
  greatest 
  length 
  37*7 
  (37"0) 
  ; 
  con- 
  

   dylo-basilar 
  length 
  31-5 
  (Sl'O) 
  ; 
  palatilar 
  length 
  IG'O 
  (15-Oj; 
  

   length 
  of 
  nasals 
  14*7 
  (13'0); 
  gTeatest 
  breadth 
  of 
  combined 
  

   nasals 
  4"4 
  (4"6) 
  ; 
  shortest 
  distance 
  between 
  tips 
  of 
  nasals 
  

   and 
  lachrymal 
  notch 
  14*2 
  (13-8) 
  ; 
  diastema 
  lO'O 
  (9-4) 
  ; 
  

   upper 
  molar 
  row 
  5'6 
  (5"9) 
  ; 
  length 
  of 
  palatal 
  foramina 
  6"4 
  

   ((J'3); 
  breadth 
  of 
  combined 
  foramina 
  2*9 
  (27); 
  zygomatic 
  

   breadth 
  17-0 
  (16-9); 
  cranial 
  breadth 
  14-6 
  (15-Oj. 
  

  

  Specimens 
  examined. 
  — 
  Five, 
  all 
  from 
  the 
  type-locality. 
  

  

  Remarks. 
  — 
  This 
  furm 
  is 
  somewhat 
  closely 
  allied 
  to 
  the 
  

   mainland 
  E.jerdoni 
  bukit, 
  but 
  the 
  differences, 
  which 
  seem 
  

   constant, 
  are 
  sufficient 
  to 
  separate 
  it 
  as 
  an 
  insular 
  race. 
  

  

  * 
  Bouliote, 
  Ann. 
  & 
  Mog. 
  Nat. 
  Hist. 
  (7) 
  xi. 
  p. 
  li>5 
  (1903). 
  

  

  t 
  Measurements 
  iu 
  parentheses 
  are 
  those 
  of 
  an 
  adult 
  male 
  E.jerdoni 
  

   bukit 
  from 
  Chong, 
  Trang, 
  Western 
  Siamese 
  Malay 
  States 
  ; 
  Federated 
  

   Malay 
  States 
  Museum, 
  No. 
  30/10. 
  

  

  Ann. 
  A: 
  May. 
  N. 
  Hist. 
  ;Scr. 
  8. 
  Vol 
  xiii. 
  l(j 
  

  

  