﻿new 
  Sjyecies 
  o/Myopus/ro/n 
  Central 
  Asia. 
  343 
  

  

  Myopus 
  saianicus, 
  sp. 
  n. 
  

  

  Lemtmis 
  ohensis, 
  Thomas, 
  Ann. 
  & 
  Mag. 
  Nat. 
  Hist. 
  (8) 
  ix., 
  April 
  1912, 
  

   p. 
  401 
  (not 
  of 
  Brants). 
  

  

  Type. 
  — 
  An 
  adult 
  male 
  (skull 
  with 
  temporal 
  ridges 
  fused 
  

   into 
  a 
  salient 
  interorbital 
  ciest). 
  B.M. 
  12. 
  4. 
  1. 
  126. 
  From 
  

   the 
  Syansk 
  Mountains, 
  100 
  miles 
  west 
  of 
  Lake 
  Baikal. 
  

   Trapped 
  on 
  12th 
  June, 
  liilO, 
  by 
  Mr. 
  Douglas 
  Carruthers, 
  at 
  

   a 
  height 
  of 
  2200 
  feet, 
  in 
  wet 
  moss. 
  

  

  External 
  characters. 
  — 
  In 
  all 
  essential 
  respects 
  the 
  external 
  

   form 
  is 
  that 
  of 
  the 
  genus. 
  Size 
  about 
  as 
  in 
  M. 
  morulas^ 
  but 
  

   with 
  relatively 
  larger 
  head. 
  The 
  general 
  colour 
  is 
  con- 
  

   siderably 
  lighter 
  and 
  brighter 
  than 
  in 
  ^[. 
  schisticolor. 
  The 
  

   rusty 
  mantle 
  is 
  much 
  more 
  extensive 
  than 
  in 
  the 
  Skandi- 
  

   navian 
  species, 
  and 
  agrees 
  exactly 
  vvith 
  Hollister^'s 
  desciiption 
  

   of 
  that 
  of 
  M. 
  morulas. 
  As 
  in 
  the 
  two 
  cited 
  species, 
  the 
  

   ground-colour 
  of 
  the 
  remainder 
  of 
  the 
  body 
  is 
  dark 
  grey 
  or 
  

   slate, 
  but 
  it 
  is 
  lightened 
  in 
  the 
  present 
  species 
  by 
  silver 
  hairs, 
  

   which 
  are 
  abundant 
  everywiiere, 
  and 
  particulaily 
  so 
  on 
  the 
  

   ventral 
  surface 
  ; 
  a 
  few 
  silver 
  hairs 
  also 
  appear 
  through 
  the 
  

   rusty 
  mantle 
  at 
  one 
  point 
  oti 
  the 
  rump. 
  Ihe 
  hands 
  are 
  like 
  

   the 
  sides 
  in 
  colour 
  ; 
  the 
  tail 
  is 
  black 
  and 
  the 
  feet 
  are 
  dark 
  

   brown 
  (near 
  " 
  sepia 
  ") 
  above 
  ; 
  the 
  under 
  surfaces 
  of 
  feet 
  and 
  

   tail 
  are 
  lighter, 
  near 
  " 
  buffy 
  brown.'' 
  

  

  Collector's 
  measurements 
  of 
  type. 
  — 
  Head 
  and 
  body 
  88 
  mm. 
  ; 
  

   tail 
  (without 
  terminal 
  hairs) 
  14*; 
  hind 
  foot 
  (without 
  

   claws) 
  16 
  ; 
  ear 
  13 
  5. 
  

  

  Skull 
  and 
  teeth. 
  — 
  Compared 
  with 
  M. 
  schisticolor^ 
  the 
  upper 
  

   incisors 
  are 
  slightly 
  stronger 
  and 
  a 
  little 
  more 
  recurved 
  ; 
  in 
  

   section 
  they 
  make 
  a 
  nearer 
  approach 
  to 
  those 
  of 
  Lemmus, 
  in 
  

   that 
  the 
  outer 
  part 
  of 
  the 
  anterior 
  face 
  of 
  each 
  is 
  wider, 
  while 
  

   the 
  narrower 
  inner 
  portion 
  is 
  rather 
  sharply 
  bent 
  backwards, 
  

   so 
  that 
  the 
  wearing 
  surface 
  of 
  each 
  tooth 
  tends 
  to 
  assume 
  

   the 
  peculiar 
  tubular 
  form 
  which 
  is 
  so 
  characteristic 
  of 
  the 
  

   upper 
  incisors 
  of 
  Lenimus. 
  The 
  cheek-teeth 
  are 
  noticeably 
  

   larger 
  and 
  broader 
  than 
  those 
  of 
  M. 
  schisticolor, 
  but 
  they 
  

   agree 
  exactly 
  in 
  form. 
  The 
  skull 
  differs 
  from 
  the 
  Skandi- 
  

   navian 
  species 
  most 
  strikingly 
  in 
  its 
  greatly 
  enlarged 
  and 
  

   globosely 
  inflated 
  auditory 
  buHte. 
  The 
  rostrum 
  is 
  shallower 
  

   and 
  longer, 
  with 
  less 
  steeply 
  inclined 
  nasals, 
  and 
  the 
  length 
  

   of 
  the 
  diastema 
  is 
  a 
  little 
  greater. 
  In 
  correlation 
  with 
  tlie 
  

   enlargement 
  of 
  the 
  cheek-teeth 
  and 
  bullae, 
  the 
  pterygoid 
  fossai 
  

   are 
  shortened. 
  The 
  posterior 
  edge 
  of 
  the 
  palate 
  is 
  gently 
  

   convex 
  centrally, 
  instead 
  of 
  being 
  furnished 
  with 
  a 
  small 
  

  

  * 
  Given 
  as 
  " 
  21 
  " 
  on 
  label 
  ; 
  but 
  this 
  is 
  obviously 
  wrong. 
  

  

  23* 
  

  

  