﻿JUNE 
  4, 
  1922 
  JACKSON: 
  SOREX 
  263 
  

  

  logical 
  Survey 
  show 
  that 
  in 
  order 
  to 
  indicate 
  properly 
  the 
  relationships 
  

   of 
  the 
  various 
  forms 
  of 
  the 
  genus 
  Sorex 
  it 
  is 
  necessary 
  to 
  describe 
  four 
  

   new 
  species 
  and 
  subspecies. 
  Inasmuch 
  as 
  completion 
  of 
  my 
  studies 
  

   of 
  this 
  genus 
  is 
  now 
  within 
  sight, 
  the 
  descriptions 
  and 
  remarks 
  on 
  these 
  

   new 
  forms 
  are 
  here 
  much 
  abbreviated. 
  More 
  detailed 
  descriptions 
  

   and 
  discussion 
  of 
  relationships 
  will 
  be 
  presented 
  in 
  the 
  monograph. 
  

  

  Sorex 
  preblei,2 
  sp. 
  nov. 
  

  

  Type 
  specimen. 
  — 
  No. 
  208,032, 
  U. 
  S. 
  National 
  Museum, 
  Biological 
  Survey 
  

   collection; 
  male 
  adult 
  (teeth 
  moderately 
  worn), 
  skin 
  and 
  skull; 
  collected 
  

   July 
  3, 
  1915, 
  by 
  Edward 
  A. 
  Preble. 
  Original 
  number 
  5972. 
  

  

  Type 
  locality. 
  — 
  Jordan 
  Valley, 
  altitude 
  4,200 
  feet, 
  Malheur 
  County, 
  

   Oregon. 
  

  

  Geographic 
  range. 
  — 
  Known 
  only 
  from 
  eastern 
  Oregon. 
  

  

  Diagnostic 
  characters. 
  — 
  Smallest 
  of 
  the 
  western 
  forms 
  of 
  the 
  personatus 
  

   group; 
  color 
  paler 
  and 
  more 
  grayish 
  than 
  in 
  Sorex 
  personatus 
  personatus; 
  

   hind 
  foot 
  small. 
  Skull 
  relatively 
  flattened, 
  small, 
  with 
  relatively 
  short 
  

   rostrum. 
  

  

  Color. 
  — 
  ^Summer 
  pelage: 
  Upperparts 
  between 
  hair-brown^ 
  and 
  olive-drab, 
  

   paling 
  on 
  the 
  sides; 
  underparts 
  pale 
  smoke 
  gray 
  very 
  faintly 
  tinged 
  with 
  

   cartridge 
  buff. 
  Tail 
  above 
  olive-buff 
  basally, 
  darkening 
  to 
  clove-brown 
  

   toward 
  tip 
  ; 
  avellaneous 
  below, 
  darkening 
  apically. 
  

  

  Measurements 
  of 
  type 
  specimen. 
  — 
  -Total 
  length, 
  95 
  ; 
  tail 
  vertebrae, 
  36 
  ; 
  hind 
  

   foot, 
  11. 
  Skull: 
  Condylobasal 
  length, 
  14.6; 
  palatal 
  length, 
  5.4; 
  breadth 
  

   of 
  cranium, 
  7.1; 
  interorbital 
  breadth, 
  3.1; 
  maxillary 
  breadth, 
  4.2; 
  maxil- 
  

   lary 
  tooth 
  row, 
  5.1. 
  

  

  Sorex 
  obscurus 
  isolatus, 
  subsp. 
  nov. 
  

  

  Type 
  specimen. 
  — 
  No. 
  177,719, 
  U. 
  S. 
  National 
  Museum, 
  Biological 
  Survey 
  

   collection; 
  male 
  adult 
  (teeth 
  moderately 
  worn), 
  skin 
  and 
  skull; 
  collected 
  

   May 
  21, 
  1911 
  by 
  F. 
  Alexander 
  Wetmore. 
  Original 
  number 
  517. 
  

  

  Type 
  locality. 
  — 
  Mouth 
  of 
  Millstone 
  Creek, 
  Nanaimo, 
  Vancouver 
  island, 
  

   British 
  Columbia. 
  

  

  Geographic 
  range. 
  — 
  Known 
  only 
  from 
  Vancouver 
  Island, 
  British 
  Columbia. 
  

  

  Diagnostic 
  characters. 
  — 
  About 
  the 
  size 
  of 
  Sorex 
  obsctirus 
  obscurus 
  or 
  5. 
  o. 
  

   parvidens, 
  but 
  darker 
  than 
  either, 
  particularly 
  on 
  the 
  ventral 
  parts 
  which 
  

   are 
  also 
  decidedly 
  more 
  brownish. 
  Unicuspidate 
  teeth 
  smaller 
  than 
  in 
  obscurus, 
  

   and 
  the 
  posterior 
  borders 
  of 
  molariform 
  teeth 
  tending 
  to 
  be 
  more 
  deeply 
  

   emarginate. 
  

  

  Color. 
  — 
  Winter 
  pelage 
  : 
  Upperparts 
  nearest 
  chaetura 
  drab 
  mixed 
  with 
  gray- 
  

   ish, 
  gradually 
  blending 
  into 
  color 
  of 
  underparts, 
  which 
  are 
  smoke 
  gray 
  tinged 
  

   with 
  drab; 
  tail 
  indistinctly 
  bicolor, 
  olive-brown 
  above, 
  buffy 
  brown 
  to 
  almost 
  

   tawny-olive 
  below. 
  

  

  Measurements 
  of 
  type 
  specimen. 
  — 
  Total 
  length, 
  113; 
  tail 
  vertebrae. 
  49; 
  

   hind 
  foot, 
  14. 
  Skull: 
  Condylobasal 
  length, 
  17.4; 
  palatal 
  length, 
  6.6; 
  breadth 
  

   of 
  cranium, 
  8.5; 
  interorbital 
  breadth, 
  3.5; 
  maxillary 
  breadth, 
  4.9; 
  maxillary 
  

   tooth 
  row, 
  6.3. 
  

  

  - 
  Named 
  for 
  the 
  collector 
  Mr. 
  Edward 
  A. 
  Preble, 
  friend 
  and 
  coworker, 
  in 
  recognition 
  of 
  

   his 
  services 
  and 
  contributions 
  to 
  American 
  mammalogy. 
  

  

  ' 
  Colors 
  here 
  used 
  are 
  those 
  of 
  Ridgway, 
  Color 
  standards 
  and 
  color 
  nomenclature, 
  1912. 
  

  

  