﻿new 
  (^cillicebus 
  and 
  Eumops/yom 
  .S. 
  America. 
  481 
  

  

  been 
  accidentally 
  or 
  patliologically 
  shrunk). 
  Keel 
  of 
  ear- 
  

   conch 
  much 
  thickened 
  terminally. 
  Tragus 
  narrower 
  tliaii 
  

   in 
  peroti's, 
  about 
  3x1 
  mm.; 
  its 
  end 
  rounded. 
  Antitrai^us 
  

   about 
  8 
  mm. 
  in 
  length, 
  separated 
  by 
  a 
  deep 
  notch 
  behind. 
  

   A 
  large 
  throat-gland 
  in 
  male, 
  none 
  in 
  female. 
  

  

  Colour 
  brown 
  above 
  and 
  below, 
  the 
  bases 
  of 
  the 
  haiis 
  

   whitish. 
  

  

  Skull 
  of 
  very 
  similar 
  form 
  to 
  that 
  of 
  E.gJaucinus, 
  although 
  

   immensely 
  larger 
  — 
  much 
  broader 
  and 
  more 
  heavily 
  made 
  

   than 
  that 
  of 
  the 
  only 
  species 
  approaching 
  it 
  in 
  size, 
  E.pei-otis. 
  

   Muzzle 
  low, 
  rounded, 
  subcylindrical. 
  Zygomata 
  with 
  

   laterally 
  projecting 
  shoulders 
  above 
  m^, 
  just 
  as 
  in 
  glaucinus. 
  

   Mesial 
  crest 
  well 
  defined, 
  though 
  not 
  high, 
  passing 
  behind 
  

   into 
  a 
  well-marked 
  occipital 
  helmet. 
  

  

  Dimensions 
  of 
  male 
  and 
  female 
  specimens 
  (the 
  latter 
  the 
  

   type) 
  : 
  — 
  

  

  Forearm 
  82 
  and 
  79 
  mm. 
  

  

  Head 
  and 
  body 
  115, 
  106 
  ; 
  tail 
  61, 
  59 
  ; 
  ear 
  (perhaps 
  

   shrunk) 
  28, 
  27 
  ; 
  third 
  tinger, 
  metacarpus 
  83, 
  77, 
  first 
  pha- 
  

   lanx 
  37, 
  33 
  ; 
  lower 
  leg 
  and 
  hind 
  foot 
  (c. 
  u.) 
  45, 
  41. 
  

  

  Skull 
  : 
  greatest 
  length 
  33"5, 
  31 
  ; 
  condylo-incisive 
  length 
  

   32'3, 
  30"7 
  ; 
  condylo-basal 
  length 
  31*5/ 
  29'4 
  ; 
  zygomatic 
  

   breadth 
  20*4, 
  29*4 
  ; 
  intertemporal 
  breadth 
  6-1, 
  5-7; 
  mastoid 
  

   breadth 
  17*5, 
  16"3 
  ; 
  palatal 
  length 
  14, 
  14*2; 
  maxillary 
  

   tooth-row 
  13*7, 
  13*2; 
  front 
  of 
  p^ 
  to 
  back 
  of 
  /«^8*7j8'6; 
  

   breadth 
  between 
  outer 
  corners 
  of 
  m^ 
  14'2, 
  13*4. 
  

  

  Hub. 
  Chaco, 
  Argentina. 
  

  

  Two 
  specimens, 
  male 
  and 
  female, 
  received 
  for 
  examination 
  

   from 
  the 
  Museo 
  Nacional, 
  Buenos 
  Ay 
  res. 
  The 
  female 
  pre- 
  

   sented 
  to 
  the 
  British 
  Museum 
  (B.M. 
  no. 
  14. 
  4. 
  4. 
  8). 
  

  

  This 
  fine 
  species 
  is 
  by 
  far 
  the 
  largest 
  of 
  all 
  American 
  

   Molossidse, 
  the 
  oidy 
  one 
  that 
  approaches 
  it 
  in 
  length 
  of 
  fore- 
  

   arm 
  and 
  skull, 
  E. 
  perotis, 
  being 
  a 
  far 
  more 
  slenderly 
  built 
  

   animal, 
  with 
  a 
  peculiarly 
  narrow 
  skull. 
  Compared 
  with 
  

   Old- 
  World 
  Molossines, 
  it 
  exceeds 
  all 
  except 
  Chiromeles 
  

   torquaius, 
  and 
  that 
  it 
  practically 
  equals 
  in 
  length 
  of 
  forearm 
  

   and 
  skull, 
  though 
  Chiromeles 
  is 
  far 
  more 
  bulky. 
  

  

  1 
  iiave 
  named 
  this 
  interesting 
  animal 
  in 
  honour 
  of 
  Dr. 
  R. 
  

   Dabbene, 
  Conservator 
  of 
  Zoology 
  in 
  the 
  Buenos 
  Ayres 
  

   National 
  Museum, 
  to 
  whose 
  kindness 
  I 
  owe 
  the 
  opportunity 
  

   of 
  examining 
  it. 
  

  

  Ann. 
  & 
  Mag. 
  N. 
  Hist. 
  Ser. 
  8. 
  Vol. 
  xiii. 
  33 
  

  

  