﻿51.4 
  Mr. 
  0. 
  Thomas 
  oil 
  

  

  Dimensions 
  of 
  the 
  type 
  (the 
  starred 
  measurements 
  taken 
  

   in 
  flesh) 
  : 
  — 
  

  

  Forearm 
  38*7 
  mm. 
  (other 
  specimens 
  : 
  ? 
  , 
  38"5, 
  38*8, 
  31'). 
  

  

  Head 
  and 
  body 
  *43 
  ; 
  tail 
  *48; 
  ear 
  *14 
  ; 
  third 
  finger, 
  

   metacarpus 
  35'7, 
  first 
  phalanx 
  14-8 
  ; 
  lower 
  leg 
  and 
  foot 
  

   (c. 
  u.) 
  26. 
  

  

  Skull: 
  greatest 
  length 
  16*8; 
  condylo-basal 
  length 
  15*6; 
  

   breadth 
  across 
  muzzle 
  5*4 
  ; 
  breadth 
  of 
  brain-case 
  8*4 
  ; 
  front 
  

   of 
  canine 
  to 
  back 
  of 
  m 
  3 
  7*1. 
  

  

  Hab. 
  San 
  Esteban, 
  Carabobo, 
  N. 
  Venezuela. 
  

  

  Type. 
  Adult 
  male. 
  Original 
  number 
  77. 
  Collected 
  24th 
  

   December, 
  1910. 
  

  

  The 
  four 
  specimens 
  are 
  so 
  uniformly 
  larger 
  than 
  Miller's 
  

   type 
  (forearm 
  of 
  $ 
  36 
  mm., 
  of 
  ? 
  35), 
  that 
  it 
  is 
  evident 
  that 
  

   the 
  form 
  inhabiting 
  the 
  Island 
  of 
  Curasao 
  is 
  a 
  small 
  insular 
  

   race 
  of 
  its 
  representative 
  on 
  the 
  continent 
  of 
  South 
  America. 
  

  

  In 
  studying 
  this 
  most 
  interesting 
  bat 
  I 
  am 
  able 
  to 
  confirm 
  

   Miller's 
  statement 
  as 
  to 
  the 
  imperfection 
  of 
  the 
  posterior 
  

   palate, 
  which 
  is 
  as 
  he 
  describes 
  in 
  all 
  the 
  specimens, 
  one 
  of 
  

   which 
  I 
  examined 
  myself 
  under 
  a 
  microscope 
  before 
  the 
  soft 
  

   palate 
  was 
  disturbed. 
  

  

  The 
  palate-ridges 
  are 
  nine 
  in 
  number, 
  the 
  anterior 
  ones 
  

   simple 
  and 
  transverse, 
  the 
  posterior 
  divided 
  mesially 
  and 
  

   directed 
  backwards 
  in 
  the 
  centre, 
  the 
  whole 
  series 
  passing 
  

   gradually 
  from 
  the 
  one 
  condition 
  to 
  the 
  other. 
  

  

  Marmosa 
  grenadce, 
  sp. 
  n. 
  

  

  Allied 
  to 
  M. 
  murina, 
  but 
  with 
  7 
  — 
  1 
  — 
  7 
  mammae. 
  

  

  General 
  characters 
  of 
  the 
  red 
  members 
  of 
  the 
  genus, 
  but 
  

   the 
  back 
  is 
  less 
  rufous 
  and 
  more 
  greyish 
  than 
  in 
  most 
  of 
  

   them. 
  Central 
  dorsal 
  area 
  approaching 
  " 
  broccoli-brown," 
  

   the 
  sides 
  becoming 
  nearer 
  " 
  clay-colour," 
  but 
  the 
  specimen 
  

   has 
  been 
  skinned 
  out 
  of 
  spirit, 
  so 
  that 
  the 
  colours 
  are 
  probably 
  

   altered 
  to 
  some 
  extent. 
  Under 
  surface 
  creamy 
  white, 
  the 
  

   hairs 
  white 
  to 
  their 
  roots 
  except 
  in 
  a 
  narrow 
  area 
  on 
  each 
  side 
  

   of 
  the 
  belly, 
  bordering 
  the 
  darker 
  colour 
  of 
  the 
  flanks. 
  Tail 
  

   pale 
  grey, 
  not 
  becoming 
  white 
  terminally. 
  Mammas 
  7 
  — 
  1 
  — 
  7 
  

   = 
  15, 
  the 
  South-American 
  M. 
  murina 
  having 
  4 
  — 
  1 
  — 
  4 
  = 
  9 
  or 
  

   5—1—5 
  = 
  11. 
  

  

  Skull 
  shaped 
  as 
  in 
  the 
  Trinidad 
  Marmosa, 
  broader 
  than 
  in 
  

   that 
  of 
  Tobago; 
  supraorbital 
  ridges 
  thickened, 
  projecting 
  

   slightly 
  over 
  the 
  orbits, 
  but 
  not 
  forming 
  angular 
  postorbital 
  

   processes. 
  

  

  