﻿356 
  Mr. 
  0. 
  Thomas 
  on 
  

  

  few 
  tliat 
  I 
  hesitate 
  for 
  the 
  present 
  to 
  use 
  this 
  name 
  for 
  the 
  

   Brazilian 
  animal, 
  as 
  better 
  series 
  may 
  bring 
  out 
  some 
  constant 
  

   distinguishing 
  character. 
  C. 
  tJious 
  ranges 
  westwards 
  into 
  

   Venezuela, 
  and 
  it 
  is 
  possible 
  that 
  the 
  Santa 
  Marta 
  C. 
  aquilus 
  

   should 
  be 
  united 
  with 
  it. 
  

  

  At 
  Chapada, 
  Matte 
  Grosso, 
  Mr. 
  Robert 
  obtained 
  three 
  

   dogs 
  of 
  this 
  group, 
  two 
  of 
  them 
  quite 
  like 
  brasilienf^is, 
  but 
  

   the 
  third 
  standing 
  out 
  by 
  its 
  long 
  skull 
  and 
  larger 
  teetli 
  from 
  

   all 
  the 
  rest 
  ; 
  and 
  I 
  see 
  no 
  alternative 
  but 
  to 
  consider 
  this 
  as 
  

   a 
  special 
  form, 
  like 
  as 
  it 
  is 
  externally 
  to 
  the 
  others. 
  Curiously 
  

   enough, 
  the 
  same 
  thing 
  happened 
  with 
  Lycalopex, 
  for 
  lie 
  

   obtained 
  at 
  Chapada 
  the 
  type 
  of 
  L. 
  sladeni 
  as 
  well 
  as 
  examples 
  

   of 
  L. 
  vefulus. 
  Probably 
  the 
  locality 
  being 
  at 
  the 
  edge 
  of 
  the 
  

   Brazilian 
  plateau, 
  animals 
  from 
  both 
  highlands 
  and 
  lowlands 
  

   may 
  be 
  collected 
  there. 
  

  

  The 
  skull 
  of 
  G. 
  mima.v 
  in 
  some 
  respects 
  approaches 
  that 
  

   of 
  the 
  Amazonian 
  C. 
  microtis 
  *, 
  but 
  the 
  external 
  differences 
  

   between 
  the 
  two 
  are 
  quite 
  marked. 
  

  

  Cerdocyon 
  tJious 
  limaris^ 
  subsp. 
  n. 
  

  

  Allied 
  to 
  C. 
  i. 
  savannarum, 
  but 
  with 
  even 
  smaller 
  skull 
  

   and 
  teeth. 
  

  

  External 
  appearance 
  very 
  much 
  as 
  in 
  savannarum, 
  the 
  

   general 
  colour 
  a 
  little 
  darker 
  and 
  less 
  suffused 
  with 
  buffy. 
  

   Under 
  surface 
  whitish, 
  suffused 
  with 
  buff 
  on 
  the 
  belly 
  ; 
  chin 
  

   black. 
  Hands 
  and 
  feet 
  grizzled 
  grey 
  above, 
  black 
  on 
  palms 
  

   and 
  soles. 
  

  

  Skull 
  markedly 
  smaller 
  than 
  that 
  o^ 
  savannarum, 
  itself 
  the 
  

   smallest 
  Cerdocyon 
  hitherto 
  desciibed. 
  Brain-case 
  propor- 
  

   tionally 
  large, 
  its 
  breadth 
  practically 
  equal 
  to 
  that 
  o{ 
  savan- 
  

   narum. 
  Muzzle 
  narrow 
  and 
  delicate. 
  Teeth 
  conspicuously 
  

   smaller 
  throughout 
  (see 
  measurements), 
  the 
  difference 
  in 
  the 
  

   size 
  of 
  m^ 
  particularly 
  noticeable. 
  Canines 
  short 
  and 
  slender. 
  

  

  Dimensions 
  of 
  the 
  type 
  : 
  — 
  

  

  Hind 
  foot 
  113 
  mm. 
  

  

  Skull: 
  condylo-basal 
  length 
  116*5; 
  zygomatic 
  breadth 
  65'5; 
  

   nasals 
  on 
  middle 
  line 
  38 
  ; 
  breadth 
  of 
  muzzle 
  outside 
  p^ 
  17'5 
  ; 
  

   interorbital 
  breadth 
  23 
  ; 
  across 
  postorbital 
  processes 
  35 
  ; 
  

   intertemporal 
  constriction 
  30 
  ; 
  brain-case, 
  breadth 
  43 
  ; 
  post- 
  

   orbital 
  process 
  to 
  back 
  of 
  deltoid 
  ridge 
  52 
  ; 
  palatal 
  length 
  59. 
  

  

  Teeth 
  : 
  length 
  of 
  p- 
  G*4, 
  ]/ 
  6"4, 
  p^ 
  on 
  outer 
  edge 
  11 
  ; 
  m' 
  on 
  

   outer 
  edge 
  8'8j 
  greatest 
  diameter 
  11'4; 
  length 
  of 
  lower 
  

   carnassial 
  13. 
  

  

  * 
  I 
  am 
  sufficiently 
  a 
  " 
  one-letterist 
  " 
  to 
  see 
  no 
  reason 
  to 
  alter 
  the 
  name 
  

   microtis 
  because 
  it 
  is 
  antedated 
  bv 
  microtus. 
  

  

  