﻿228 
  Messrs. 
  H. 
  C. 
  Robinson 
  and 
  C. 
  B. 
  Kloss 
  on 
  

  

  Epimys 
  or 
  bus, 
  sp. 
  n. 
  

  

  Type. 
  — 
  Adult 
  male 
  (skin 
  and 
  skull), 
  No. 
  61/13, 
  Fede- 
  

   rated 
  Malay 
  States 
  Museum, 
  collected 
  on 
  Kao 
  Nawng, 
  

   3500 
  ft., 
  Bandon, 
  N.E. 
  Malay 
  Peninsula, 
  23rd 
  June, 
  1913, 
  

   by 
  H. 
  C. 
  Robinson 
  and 
  E. 
  Seimuud. 
  Original 
  no. 
  5641. 
  

  

  Characters. 
  — 
  A. 
  rat 
  with 
  very 
  spiny 
  pelage 
  and 
  small 
  flat- 
  

   tened 
  bullae. 
  Tail 
  very 
  greatly 
  exceeding 
  head 
  and 
  body 
  

   in 
  length. 
  Lower 
  pelage 
  sharply 
  defined 
  from 
  upper. 
  Tail 
  

   bicolor, 
  but 
  not 
  markedly 
  so, 
  very 
  slightly 
  penicillate 
  at 
  tip. 
  

  

  Colour. 
  — 
  Pelage 
  above, 
  as 
  in 
  other 
  rats 
  of 
  the 
  group, 
  

   composed 
  of 
  three 
  elements 
  : 
  {a} 
  long 
  black 
  piles, 
  best 
  

   developed 
  on 
  the 
  lower 
  back, 
  [h) 
  flattened 
  spines 
  with 
  black 
  

   tips, 
  and 
  (c) 
  soft 
  fur, 
  grey 
  at 
  the 
  base, 
  rich 
  ochraceous 
  on 
  

   the 
  terminal 
  half 
  of 
  the 
  hairs, 
  producing 
  a 
  grizzled 
  ochra- 
  

   ceous 
  eff'ect 
  darkest 
  on 
  the 
  median 
  line 
  of 
  the 
  back 
  ; 
  cheeks 
  

   and 
  sides 
  of 
  the 
  head 
  and 
  neck 
  almost 
  pure 
  ochraceous. 
  

   Under 
  surface 
  white 
  with 
  a 
  creamy 
  tinge, 
  the 
  white 
  ex- 
  

   tending 
  to 
  the 
  wrists 
  but 
  not 
  to 
  the 
  ankles. 
  Upper 
  surface 
  

   of 
  hands 
  and 
  feet 
  dirty 
  white 
  with 
  a 
  dark 
  clay-brown 
  mediaii 
  

   streak, 
  not 
  reaching 
  the 
  base 
  of 
  the 
  digits. 
  Tail 
  bicolor, 
  

   with 
  fine 
  annulations, 
  clad 
  with 
  fine 
  silky 
  hairs 
  longer 
  at 
  

   the 
  tip. 
  

  

  Skull 
  and 
  teeth. 
  — 
  The 
  skull 
  is 
  not 
  markedly 
  diff'erent 
  from 
  

   those 
  of 
  E. 
  jerdoni 
  bukit 
  and 
  E. 
  crenioriv 
  enter, 
  but 
  rather 
  

   larger, 
  the 
  palatal 
  foramina 
  broader, 
  as 
  also 
  the 
  infraorbital 
  

   plate, 
  and 
  the 
  zygomatic 
  arches 
  less 
  flaring, 
  so 
  that 
  the 
  

   skull 
  appears 
  relatively 
  narrower. 
  

  

  Measurements. 
  — 
  Collectors' 
  external 
  measurements 
  (taken 
  

   in 
  the 
  flesh) 
  : 
  — 
  

  

  Head 
  and 
  body 
  153 
  (141*) 
  mm. 
  ; 
  tail 
  235 
  (188) 
  ; 
  hind 
  

   foot 
  32 
  (26) 
  ; 
  ear 
  20 
  (18-5). 
  

  

  Cranial 
  measurements 
  : 
  greatest 
  length 
  38" 
  1 
  (36'4) 
  ; 
  basal 
  

   length 
  30-1 
  (29-2) 
  ; 
  palatal 
  length 
  16*8 
  (15-8) 
  ; 
  length 
  of 
  

   nasals 
  139 
  (13 
  0) 
  ; 
  greatest 
  breadth 
  of 
  combined 
  nasals 
  5'2 
  

   (4*6) 
  ; 
  shortest 
  distance 
  between 
  tips 
  of 
  nasals 
  and 
  lachry- 
  

   mal 
  notch 
  14*5 
  (13*1) 
  ; 
  diastema 
  9*8 
  (9-1); 
  upper 
  molar 
  

   row 
  6"3 
  (6-3); 
  length 
  of 
  palatal 
  foramina 
  6*3 
  (6*2); 
  breadth 
  

   of 
  combined 
  foramina 
  3*3 
  (2'7) 
  ; 
  zygomatic 
  breadth 
  17-0 
  

   (17-4) 
  ; 
  cranial 
  breadth 
  15-9 
  (14-7). 
  ' 
  

  

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

  

  Remarks. 
  — 
  The 
  only 
  rat 
  with 
  which 
  this 
  species 
  requires 
  

   comparison 
  is 
  Mus 
  cinnamomeus, 
  BIyth 
  f, 
  of 
  which 
  the 
  only 
  

  

  * 
  Measurements 
  in 
  parentheses 
  are 
  those 
  of 
  an 
  adult 
  male 
  E. 
  ci-emori- 
  

   renter 
  from 
  Gunong 
  Ijau, 
  4700 
  ft., 
  Larut, 
  Peralc 
  ; 
  Federated 
  Malay 
  States 
  

   Museum, 
  No. 
  1809/li. 
  

  

  t 
  .louru. 
  Asiat. 
  Soc. 
  Bengal, 
  xxviii. 
  p. 
  294 
  (18-;9). 
  

  

  