﻿new 
  Mammals 
  from 
  Dutch 
  New 
  Guinea. 
  387 
  

  

  Uromys 
  stalkeri 
  calidior, 
  subsp. 
  n. 
  

  

  Similar 
  to 
  true 
  stalkeri 
  of 
  Eastern 
  New 
  Guinea 
  in 
  all 
  

   essential 
  characters, 
  but 
  fur 
  crisper 
  and 
  colour 
  darker, 
  warmer, 
  

   and 
  more 
  heavily 
  ticked 
  with 
  black. 
  Sides 
  of 
  belly 
  edged 
  

   with 
  buffy. 
  

  

  Fur 
  crisp, 
  decidedly 
  crisper 
  than 
  in 
  the 
  soft-haired 
  stalkeri; 
  

   hairs 
  of 
  back 
  about 
  9 
  mm. 
  in 
  length. 
  General 
  colour 
  above 
  

   nearest 
  to 
  " 
  cinnamon," 
  that 
  of 
  stalkeri 
  more 
  approaching 
  

   "clay-colour," 
  the 
  back 
  heavily 
  lined, 
  owing 
  to 
  the 
  black 
  

   tips 
  to 
  the 
  hairs. 
  In 
  stalkeri 
  the 
  colour 
  is 
  almost 
  uniform, 
  

   hardly 
  any 
  of 
  the 
  hairs 
  having 
  black 
  tips. 
  Under 
  surface 
  

   white, 
  the 
  white 
  area 
  broader 
  than 
  in 
  stalkeri, 
  the 
  hairs 
  

   normally 
  white 
  to 
  their 
  bases. 
  Lower 
  edge 
  of 
  flanks 
  with 
  a 
  

   more 
  or 
  less 
  distinct 
  buffy 
  or 
  ochiaceous-buff 
  line, 
  contrasting 
  

   with 
  the 
  white 
  of 
  the 
  belly, 
  but 
  in 
  some 
  specimens 
  the 
  buffy 
  

   passes 
  right 
  across 
  the 
  belly, 
  and 
  in 
  these 
  the 
  bases 
  of 
  the 
  

   ventral 
  hairs 
  are 
  commonly 
  slaty. 
  Head 
  grey, 
  darker 
  than 
  

   in 
  stalkeri. 
  Hands 
  whitish 
  generally, 
  with 
  a 
  darker 
  meta- 
  

   carpal 
  patch 
  ; 
  feet 
  dull 
  whitish 
  brown. 
  Tail 
  wholly 
  black. 
  

  

  Skull 
  apparently 
  as 
  in 
  stalkeri, 
  except 
  that 
  the 
  nasals 
  pro- 
  

   ject 
  backwards 
  slightly 
  beyond 
  the 
  premaxillary 
  process. 
  

  

  Dimensions 
  of 
  the 
  type 
  (measured 
  in 
  flesh) 
  : 
  — 
  

  

  Head 
  and 
  body 
  153 
  mm. 
  ; 
  tail 
  156 
  ; 
  hind 
  foot 
  30; 
  ear 
  17. 
  

  

  Skull: 
  greatest 
  length 
  33*8 
  ; 
  condylo-incisive 
  length 
  331; 
  

   zygomatic 
  breadth 
  17*7; 
  nasals 
  11 
  ; 
  interorbital 
  breadth 
  6'2; 
  

   palatilar 
  length 
  16*2 
  ; 
  palatal 
  foramina 
  4-8 
  ; 
  upper 
  molar 
  

   series 
  6*5. 
  

  

  Hob. 
  Coast 
  area 
  of 
  Dutch 
  New 
  Guinea, 
  south 
  of 
  the 
  Charles 
  

   Louis 
  Range. 
  Type 
  from 
  the 
  Mimika 
  River. 
  Alt. 
  420'. 
  

   Others 
  from 
  the 
  Wataikwa 
  River. 
  

  

  Type. 
  Old 
  male. 
  Original 
  number 
  3013. 
  Collected 
  

   30th 
  iVIarch, 
  1910, 
  by 
  G. 
  C. 
  Shortridge, 
  on 
  the 
  B.O.U. 
  New 
  

   Guinea 
  Expedition. 
  Nine 
  adults 
  and 
  rive 
  young 
  examined. 
  

  

  This 
  small 
  Uromys 
  is 
  very 
  closely 
  allied 
  to 
  the 
  Eastern 
  

   U. 
  stalkeri, 
  but 
  appears 
  to 
  be 
  separable 
  by 
  the 
  colour- 
  

   characters 
  above 
  described. 
  Some 
  of 
  the 
  specimens 
  are 
  in 
  

   a 
  grey 
  phase 
  (approaching 
  " 
  smoke-grey 
  "), 
  but 
  these 
  are 
  

   apparently 
  immature. 
  

  

  It 
  is 
  smaller 
  than 
  Dr. 
  Jentink's 
  leucogaster 
  and 
  larger 
  than 
  

   the 
  same 
  author's 
  sexplicaius. 
  Its 
  wholly 
  black 
  tail 
  forms 
  a 
  

   ready 
  means 
  of 
  distinguishing 
  it 
  from 
  lorentzii 
  and 
  naso. 
  

  

  