﻿34 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.96 
  

  

  from 
  Santa 
  Efigenia, 
  Oaxaca: 
  Greatest 
  length, 
  108.2 
  (105.2-113.4); 
  

   orbital 
  width, 
  56.2 
  (54.5-58.8) 
  ; 
  postorbital 
  constriction, 
  46.7 
  (45.5- 
  

   48.7) 
  ; 
  width 
  of 
  brain 
  case, 
  58 
  (55.9-60.2) 
  ; 
  zygomatic 
  width, 
  63.5 
  

   (59.2-66.9) 
  ; 
  maxillary 
  tooth 
  row, 
  28.5 
  (27.2-29). 
  

  

  Remarks. 
  — 
  A. 
  velUrosus 
  was 
  originally 
  assigned 
  by 
  Gray 
  to 
  Brazil, 
  

   but 
  this 
  appears 
  to 
  have 
  been 
  an 
  error, 
  as 
  pointed 
  out 
  by 
  Alston 
  

   (Biologia 
  Centrali-Americana, 
  Mammalia, 
  vol. 
  1, 
  p. 
  10, 
  Sept. 
  1879). 
  

   By 
  some 
  subsequent 
  authors, 
  including 
  Alston, 
  the 
  name 
  was 
  applied 
  

   to 
  spider 
  monkeys 
  from 
  Mexico 
  without 
  definite 
  locality. 
  Inciden- 
  

   tally, 
  the 
  plate 
  illustration 
  of 
  Sclater 
  {op. 
  cit.) 
  closely 
  resembles 
  this 
  

   form. 
  It 
  represents 
  a 
  specimen 
  believed 
  by 
  Boucard 
  to 
  have 
  been 
  pro- 
  

   cured 
  near 
  Acapulco, 
  Guerrero, 
  where 
  it 
  could 
  not 
  have 
  been 
  native, 
  

   as 
  no 
  monkeys 
  occur 
  in 
  that 
  general 
  region. 
  Under 
  the 
  name 
  velJerosus 
  

   Thomas 
  (Proc. 
  Zool. 
  Soc. 
  London 
  for 
  1890, 
  pt. 
  1, 
  p. 
  72, 
  June 
  1890) 
  

   recorded 
  specimens 
  taken 
  in 
  Veracruz 
  at 
  the 
  following 
  localities 
  : 
  Raya 
  

   de 
  Boca 
  Agustin, 
  Misantla 
  ; 
  boundaries 
  of 
  Misantla 
  and 
  Jalapa 
  ; 
  and 
  

   Hacienda 
  de 
  Tortugas, 
  Jalapa. 
  At 
  the 
  time 
  A. 
  tricolor 
  from 
  south- 
  

   eastern 
  Oaxaca 
  was 
  described 
  (op. 
  cit) 
  by 
  Hollister, 
  veUerosus 
  was 
  not 
  

   recognized 
  by 
  him, 
  and 
  the 
  name 
  A. 
  neglect 
  us 
  of 
  Veracruz 
  was 
  over- 
  

   looked. 
  The 
  following 
  year, 
  however, 
  Hollister 
  (Proc. 
  Biol. 
  Soc. 
  

   Washington, 
  vol. 
  28, 
  p. 
  142, 
  1915) 
  regarded 
  tricolor 
  and 
  neglectus 
  as 
  

   identical. 
  The 
  various 
  descriptions 
  of 
  veUerosus 
  apply 
  well 
  to 
  the 
  

   series 
  of 
  specimens 
  now 
  available 
  from 
  both 
  Veracruz 
  and 
  Oaxaca, 
  

   under 
  which 
  we, 
  therefore, 
  include 
  both 
  neglectus 
  and 
  tricolor 
  as 
  

   synonyms. 
  For 
  precision 
  we 
  would 
  restrict 
  the 
  name 
  veUerosus 
  to 
  the 
  

   form 
  known 
  to 
  occur 
  near 
  Mirador, 
  Veracruz, 
  the 
  type 
  locality, 
  inci- 
  

   dentally 
  of 
  the 
  later 
  name, 
  neglectus. 
  

  

  The 
  range 
  of 
  subspecies 
  veUerosus 
  marks 
  tlie 
  northern 
  limit 
  of 
  the 
  

   group 
  in 
  Middle 
  America. 
  It 
  inhabits 
  unbroken 
  forested 
  regions 
  

   from 
  near 
  sea 
  level 
  to 
  about 
  4,000 
  feet 
  altitude, 
  including 
  some 
  of 
  

   the 
  areas 
  of 
  heaviest 
  and 
  most 
  continuous 
  rainfall 
  in 
  Mexico. 
  William 
  

   Lloyd, 
  a 
  field 
  agent 
  of 
  the 
  former 
  Biological 
  Survey, 
  writing 
  of 
  the 
  

   mammals 
  of 
  the 
  vicinity 
  of 
  Victoria, 
  Tamaulipas, 
  in 
  1891, 
  stated 
  

   that 
  "a 
  monkey 
  has 
  been 
  said 
  to 
  have 
  been 
  taken 
  a 
  little 
  south 
  of 
  here, 
  

   but 
  the 
  most 
  authentic 
  information 
  says 
  they 
  are 
  not 
  found 
  north 
  of 
  a 
  

   point 
  west 
  of 
  Escandon, 
  rather 
  more 
  than 
  50 
  leagues 
  south." 
  It 
  is 
  

   possible 
  that 
  spider 
  monkeys 
  ranged 
  north 
  into 
  southern 
  Tamaulipas, 
  

   but 
  information 
  obtained 
  in 
  1898 
  indicated 
  that 
  the 
  northern 
  limit 
  was 
  

   then 
  near 
  Xilitla, 
  southeastern 
  San 
  Luis 
  Potosi. 
  

  

  The 
  German 
  naturalist 
  Ferdinand 
  Deppe, 
  in 
  1825, 
  purchased 
  a 
  live 
  

   Ateles 
  in 
  Alvarado, 
  Veracruz, 
  which 
  had 
  been 
  caught 
  by 
  a 
  Mexican 
  

   about 
  20 
  hours 
  distant 
  from 
  that 
  city. 
  Afterward, 
  Deppe 
  (Sclater, 
  

   Nat. 
  Hist. 
  Rev., 
  vol. 
  1, 
  No. 
  4, 
  pp. 
  508-509, 
  Oct. 
  1861) 
  while 
  en 
  route 
  

   from 
  Caxaia 
  to 
  Alvarado, 
  observed 
  a 
  "great 
  number" 
  of 
  Ateles 
  in 
  a 
  

   forest 
  near 
  Valle 
  Real. 
  

  

  