﻿MAMMALS 
  OF 
  NORTHERN 
  COLOMBIA 
  — 
  ^HERSHKOVITZ 
  489 
  

  

  thicker, 
  and 
  completely 
  hiding 
  skin; 
  hoofs 
  broad, 
  larger 
  than 
  in 
  sub- 
  

   genus 
  Tapirus 
  with 
  middle 
  hoof 
  always 
  wider 
  than 
  long. 
  Dorsal 
  

   contour 
  of 
  skull 
  (fig. 
  58, 
  b) 
  flattened 
  or 
  shghtly 
  rounded; 
  median 
  

   frontal 
  line 
  usually 
  placed 
  abruptly 
  above 
  level 
  of 
  nasals, 
  roughly 
  

   parallel 
  to 
  horizontal 
  plane 
  of 
  nasals 
  but 
  strongly 
  divergent 
  from 
  hori- 
  

   zontal 
  plane 
  of 
  maxillary 
  tooth 
  row; 
  superior 
  longitudinal 
  parietal 
  

   ridges 
  separated 
  by 
  a 
  broad 
  flat 
  table, 
  not 
  uniting 
  to 
  form 
  a 
  sagittal 
  

   crest 
  (fig. 
  59, 
  b); 
  ossification 
  of 
  vertical 
  mesethmoid 
  plate 
  extending 
  

   beyond 
  tips 
  of 
  nasals 
  to 
  angle 
  between 
  premaxillae 
  in 
  old 
  adults; 
  outer 
  

   anterodorsal 
  surface 
  of 
  maxillae 
  produced 
  upward 
  to 
  form 
  thin, 
  

   parallel-sided 
  plates 
  embracing 
  mesethmoid; 
  posterolateral 
  maxillary 
  

   process 
  projecting 
  back 
  to 
  form 
  inner 
  lateral 
  wall 
  of 
  narial 
  meatus 
  but 
  

   not 
  contacting 
  nasal 
  bone; 
  posterolateral 
  border 
  of 
  premaxilla 
  rounded 
  

   or 
  angular 
  and 
  embraced 
  by 
  maxilla; 
  nasal 
  without 
  descending 
  process 
  

   overlapping 
  maxilla; 
  two 
  ossification 
  centers 
  of 
  nasal 
  sometimes 
  per- 
  

   sistent 
  in 
  fully 
  ossified 
  bone 
  of 
  adult. 
  First 
  upper 
  premolar 
  as 
  in 
  

   subgenus 
  Tapirus; 
  upper 
  incisors 
  orthodont. 
  

  

  Remarks. 
  — 
  Tapirella 
  resembles 
  the 
  Indian 
  Tapirus 
  (Acrocodia) 
  

   indicus 
  more 
  than 
  it 
  does 
  either 
  of 
  its 
  American 
  relatives. 
  The 
  raised 
  

   but 
  flat 
  crown 
  of 
  Baird's 
  tapir 
  has 
  the 
  same 
  relationship 
  to 
  the 
  equally 
  

   broad 
  but 
  low 
  crown 
  of 
  the 
  Indian 
  tapir 
  as 
  the 
  crested 
  crown 
  of 
  T. 
  

   terrestris 
  has 
  to 
  that 
  of 
  T. 
  pinchaque. 
  Cranial 
  characters 
  associated 
  

   with 
  the 
  proboscis 
  are 
  diagnostic 
  of 
  T. 
  bairdii 
  when 
  compared 
  with 
  

   other 
  American 
  species 
  but, 
  in 
  many 
  details, 
  are 
  like 
  conditions 
  found 
  

   in 
  T. 
  indicus. 
  

  

  The 
  name 
  Tapirella, 
  dimunitive 
  of 
  Tapirus, 
  is 
  most 
  inappropriate 
  

   for 
  the 
  largest 
  hving 
  species 
  of 
  American 
  tapir. 
  

  

  Tapirus 
  {Tapirella) 
  bairdii 
  Gill 
  

  

  (Baird's 
  tapir; 
  "danta 
  centroamericana") 
  

  

  Tapir 
  (Anta) 
  Zimmermann, 
  Geographische 
  Geschichte 
  . 
  . 
  . 
  , 
  vol. 
  2, 
  p. 
  154, 
  1780 
  

  

  (part; 
  Yucatdn 
  and 
  Panamd). 
  

   Elasmognathus 
  bairdii 
  Gill, 
  Proc. 
  Acad. 
  Nat. 
  Sci. 
  Philadelphia, 
  vol. 
  17, 
  p. 
  183, 
  

  

  1865. 
  

   Elasmognathus 
  dowii 
  Gill, 
  Amer. 
  Journ. 
  Sci., 
  ser. 
  2, 
  vol. 
  50, 
  p. 
  142, 
  1870. 
  

   Elasmognathus 
  bairdii, 
  Hatcher, 
  Amer. 
  Journ. 
  Sci., 
  ser. 
  4, 
  vol. 
  1, 
  p. 
  175, 
  pi. 
  3 
  

  

  (nasals), 
  pi. 
  4, 
  fig. 
  4a, 
  pi. 
  5, 
  fig. 
  4, 
  1896 
  (osteological 
  characters; 
  phylogeny). 
  

   Elasmognathus 
  bairdi 
  [sic], 
  Gray, 
  Proc. 
  Zool. 
  Soc. 
  London 
  (1867), 
  p. 
  885, 
  pi. 
  42, 
  

  

  1868 
  (revision; 
  description). 
  

   Elasmognathus 
  dowi 
  [sic], 
  Hatcher, 
  Amer. 
  Journ. 
  Sci., 
  ser. 
  4, 
  vol. 
  1, 
  p. 
  175, 
  pi. 
  3 
  

  

  (nasals), 
  1896 
  (osteological 
  characters; 
  phylogeny; 
  "might 
  better 
  be 
  con- 
  

   sidered 
  as 
  a 
  subspecies 
  [of 
  bairdii]"). 
  

   Tapirus 
  (Elasmognathus) 
  bairdi 
  [sic], 
  Sumichrast, 
  Naturaleza 
  (Mexico), 
  vol. 
  5, 
  

  

  p. 
  332, 
  1882 
  (Sierra 
  Madre, 
  Istmo 
  de 
  Tehuantepec; 
  Chiapas, 
  Mexico). 
  

  

  