﻿478 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol. 
  103 
  

  

  and 
  Bolivia, 
  north 
  through 
  the 
  Amazonian 
  regions 
  of 
  Brazil, 
  Bolivia, 
  

   Perti, 
  Ecuador, 
  and 
  Colombia; 
  in 
  the 
  Guianas 
  and 
  Venezuela 
  west 
  

   across 
  the 
  Sierra 
  de 
  Peri 
  j 
  a 
  of 
  the 
  Cordillera 
  Oriental 
  iuto 
  northern 
  

   Colombia 
  at 
  least 
  as 
  far 
  as 
  the 
  Rio 
  Atrato 
  (see 
  map, 
  fig. 
  61) 
  ; 
  imknown 
  

   from 
  the 
  Pacific 
  coastal 
  plains 
  of 
  South 
  America; 
  altitudinal 
  range 
  

   from 
  sea 
  level 
  to 
  1,200 
  meters 
  above, 
  not 
  certainly 
  recorded 
  from 
  

   higher 
  altitudes. 
  

  

  Occurrence 
  of 
  the 
  Central 
  American 
  Tapirella 
  in 
  northwestern 
  

   South 
  America 
  presupposes 
  the 
  probable 
  existence 
  of 
  typical 
  Tapirus 
  

   in 
  Central 
  America. 
  However, 
  bonafide 
  records 
  of 
  T. 
  terrestris 
  from 
  

   Central 
  America 
  do 
  not 
  exist. 
  A 
  specimen 
  of 
  T. 
  terrestris, 
  supposedly 
  

   from 
  Talamanca, 
  Costa 
  Rica, 
  was 
  recorded 
  by 
  Goldman 
  (Smithsonian 
  

   Misc. 
  Coll., 
  vol. 
  69, 
  p. 
  83, 
  1920). 
  Later 
  authors 
  have 
  cited 
  the 
  same 
  

   record. 
  The 
  specimen 
  in 
  question, 
  a 
  skull 
  only, 
  was 
  entered 
  into 
  the 
  

   catalog 
  of 
  the 
  mammal 
  collection 
  of 
  the 
  U. 
  S. 
  National 
  Museiun 
  in 
  

   1873 
  or 
  1874 
  along 
  with 
  other 
  skulls 
  of 
  terrestris 
  and 
  pinchaque 
  and 
  

   14 
  skulls 
  of 
  bairdii 
  from 
  Costa 
  Rica. 
  No 
  doubt, 
  the 
  skull, 
  without 
  

   original 
  locality 
  data, 
  was 
  inadvertently 
  included 
  in 
  the 
  catalog 
  with 
  

   the 
  Costa 
  Rican 
  material 
  of 
  Prof. 
  Gabb. 
  

  

  Characters. 
  — 
  Crest 
  of 
  head 
  rising 
  abruptly 
  from 
  behind 
  base 
  of 
  muz- 
  

   zle 
  and 
  surmounted 
  by 
  a 
  low, 
  narrow 
  mane 
  that 
  continues 
  back 
  to 
  

   withers, 
  sometimes 
  to 
  behind 
  middle 
  of 
  back; 
  proboscis 
  well 
  developed, 
  

   fairly 
  bulky; 
  pelage 
  short, 
  stiff, 
  and 
  usually 
  not 
  completely 
  hiding 
  

   skin; 
  hoofs 
  short, 
  broad, 
  the 
  middle 
  always 
  wider 
  than 
  long. 
  Dorsal 
  

   contour 
  of 
  braincase 
  (fig. 
  58, 
  a) 
  decidedly 
  convex, 
  the 
  median 
  frontal 
  line 
  

   rising 
  steeply 
  from 
  horizontal 
  plane 
  of 
  nasals 
  and 
  divergiug 
  even 
  more 
  

   sharply 
  from 
  horizontal 
  plane 
  of 
  maxillary 
  tooth 
  row; 
  superior 
  ridges 
  

   of 
  parietals 
  united 
  to 
  form 
  a 
  single 
  arched 
  sagittal 
  crest 
  (fig. 
  59, 
  a) 
  ; 
  

   ossification 
  of 
  vertical 
  mesethmoid 
  cartilage 
  usually 
  not 
  extending 
  

   anteriorly 
  beyond 
  middle 
  of 
  nasals, 
  rarely 
  to 
  tips 
  of 
  nasals; 
  maxillae 
  

   divergent, 
  exposed 
  dorsal 
  surface 
  of 
  each 
  rounded 
  mediolaterally, 
  

   without 
  rising 
  process 
  in 
  front 
  of 
  plane 
  of 
  infraorbital 
  foramen; 
  

   posterolateral 
  maxillary 
  process 
  overlying 
  anterior 
  frontal 
  process 
  and 
  

   not 
  entering 
  into 
  composition 
  of 
  inner 
  lateral 
  wall 
  of 
  narial 
  meatus; 
  

   posterolateral 
  margin 
  of 
  premaxilla 
  forming 
  a 
  nearly 
  straight 
  or 
  a 
  

   slightly 
  curved 
  line, 
  not 
  embraced 
  laterally 
  by 
  anterior 
  margin 
  of 
  

   maxilla; 
  nasal 
  with 
  thick 
  descending 
  sigmoid 
  process 
  overlapping 
  

   maxilla. 
  First 
  upper 
  premolar 
  with 
  cinguloid 
  shelf 
  extending 
  an- 
  

   teriorly 
  from 
  internal 
  cusp 
  (fig. 
  60, 
  a); 
  upper 
  incisors 
  slightly 
  

   pro-odont. 
  

  

  Remarks. 
  — 
  ^A 
  glance 
  at 
  the 
  striking 
  sagittal 
  crest 
  of 
  the 
  skull 
  or 
  

   the 
  head 
  of 
  the 
  living 
  animal 
  is 
  sufficient 
  for 
  distinguishing 
  T. 
  ter- 
  

   restris 
  from 
  all 
  other 
  Recent 
  tapirs. 
  The 
  crest 
  appears 
  to 
  be 
  an 
  

   extreme 
  development 
  of 
  a 
  condition 
  that 
  is 
  incipient 
  in 
  T. 
  pirwhaque 
  

  

  