﻿new 
  African 
  Muridse. 
  381 
  

  

  from 
  the 
  range 
  by 
  its 
  materially 
  larger 
  size, 
  longer 
  skull, 
  

   and 
  heavier 
  teeth, 
  in 
  which 
  respects 
  it 
  equals 
  Cameroon 
  

   specimens 
  of 
  (E. 
  hypoxanthus. 
  

  

  Lophuromys 
  naso, 
  sp. 
  n. 
  

  

  Size 
  and 
  other 
  characters 
  of 
  L. 
  nudicaudus, 
  Hell., 
  but 
  teeth 
  

   peculiarly 
  cuspidate. 
  

  

  External 
  appearance 
  about 
  as 
  in 
  L. 
  nudicaudus, 
  the 
  colour 
  

   above 
  rather 
  paler 
  brown 
  and 
  below 
  duller 
  (between 
  ochraceous 
  

   tawny 
  and 
  clay-colour). 
  Tail 
  rather 
  longer. 
  

  

  Skull 
  with 
  a 
  peculiar 
  slender 
  low 
  muzzle, 
  its 
  upper 
  profile 
  

   flattened, 
  even 
  concave 
  at 
  a 
  point 
  above 
  the 
  front 
  end 
  of 
  the 
  

   palatal 
  foramina. 
  Anterior 
  zygoma-root 
  as 
  in 
  L. 
  nudicaudus. 
  

  

  Incisors 
  apparently 
  a 
  little 
  more 
  thrown 
  forwards 
  than 
  in 
  

   L. 
  nudicaudus. 
  Molars 
  narrow; 
  m 
  1 
  with 
  the 
  small 
  outer 
  

   accessory 
  cusps 
  very 
  unusually 
  developed, 
  the 
  one 
  between 
  

   the 
  first 
  and 
  second 
  laminae 
  about 
  as 
  lono- 
  as 
  it 
  ever 
  is 
  in 
  

   ordinary 
  Lophuromys, 
  while 
  that 
  between 
  the 
  second 
  and 
  third 
  

   laminae 
  is 
  produced 
  into 
  a 
  high 
  upstanding 
  cusp 
  almost 
  

   rivalling 
  in 
  height 
  the 
  main 
  outer 
  cusp 
  just 
  behind 
  it. 
  

  

  Dimensions 
  of 
  the 
  type 
  (measured 
  in 
  skin) 
  : 
  — 
  

  

  Head 
  and 
  body 
  (probably 
  shrunk) 
  95 
  mm.; 
  tail 
  63; 
  hind 
  

   foot 
  19 
  ; 
  ear 
  15. 
  

  

  Skull 
  : 
  tip 
  of 
  nasals 
  to 
  anterior 
  corner 
  of 
  interparietal 
  24*5 
  ; 
  

   nasals 
  11*7; 
  interorbital 
  breadth 
  6; 
  breadth 
  of 
  brain-case 
  

   12*5 
  ; 
  palatilar 
  length 
  11*5 
  ; 
  palatal 
  foramina 
  5*5 
  ; 
  upper 
  

   molar 
  series 
  4' 
  7. 
  

  

  Hob. 
  Gaboon. 
  

  

  Type. 
  Adult. 
  B.M. 
  no. 
  7. 
  1. 
  1. 
  85. 
  Tomes 
  Collection. 
  

   Obtained 
  from 
  Messrs. 
  Verreaux 
  about 
  1855. 
  

  

  The 
  great 
  development 
  of 
  the 
  accessory 
  cusps 
  of 
  m 
  1 
  and 
  

   the 
  peculiar 
  shape 
  of 
  the 
  muzzle 
  will 
  distinguish 
  this 
  species 
  

   from 
  any 
  Lophuromys 
  hitherto 
  described. 
  

  

  This 
  specimen, 
  from 
  Mr. 
  Tornes's 
  collection, 
  belongs 
  to 
  a 
  

   small 
  set 
  of 
  skins 
  from 
  the 
  Gaboon 
  which 
  are 
  labelled 
  as 
  

   having 
  been 
  described 
  by 
  J. 
  and 
  E. 
  Verreaux 
  in 
  the 
  ' 
  Revue 
  

   et 
  Magasin 
  de 
  Zoologie,' 
  1855, 
  under 
  various 
  names, 
  all 
  

   unknown 
  to 
  naturalists, 
  but 
  apparently 
  the 
  paper 
  was 
  never 
  

   published. 
  Had 
  it 
  been, 
  Peters' 
  s 
  name 
  Lophuromys 
  for 
  the 
  

   genus 
  would 
  have 
  been 
  antedated 
  by 
  that 
  proposed 
  by 
  the 
  

   brothers 
  Verreaux. 
  

  

  Thamnomys 
  huntingi, 
  sp. 
  n. 
  

  

  A 
  Western 
  species 
  of 
  the 
  ibeanus 
  and 
  macmillani 
  group. 
  

   General 
  external 
  appearance 
  as 
  in 
  other 
  members 
  of 
  the 
  

  

  