﻿THE 
  SPIDER 
  MONKEYS 
  KELLOGG 
  AND 
  GOLDMAN 
  15 
  

  

  sloping' 
  uiilward 
  more 
  ^n-;ulually 
  to 
  zy<i()inata; 
  maxillao 
  fonninj; 
  a 
  

   more 
  distinct 
  ridpe 
  behind 
  posterior 
  molars; 
  thin 
  oxtoinal 
  redupli- 
  

   cations 
  of 
  pteryijfoids 
  cxtciidiii^ 
  farther 
  i^osteriorly. 
  the 
  posterior 
  bor- 
  

   ders 
  less 
  deeply 
  concave 
  behind 
  tiie 
  internal 
  spinelike 
  hanuilar 
  proc- 
  

   esses; 
  posterior 
  plane 
  of 
  posterior 
  upper 
  molars 
  barely 
  reaching 
  ante- 
  

   rior 
  plane 
  of 
  temporal 
  fossae. 
  

  

  Mcasure77wnt,'<. 
  — 
  Two 
  adult 
  females 
  from 
  Rio 
  Janiunda, 
  near 
  Faro, 
  

   north 
  bank 
  of 
  Rio 
  Amazonas, 
  Para, 
  Brazil, 
  respectively 
  : 
  Total 
  length, 
  

   i;330. 
  1.389 
  nmi. 
  ; 
  tail, 
  8T0. 
  920; 
  hind 
  foot, 
  195, 
  195. 
  Two 
  adult 
  females 
  

   from 
  Lago 
  Cuipeua, 
  north 
  bank 
  of 
  Rio 
  Amazonas, 
  Para, 
  Brazil, 
  respec- 
  

   tively: 
  Total 
  length, 
  1,450, 
  1,413; 
  tail, 
  880, 
  753; 
  hind 
  foot, 
  220, 
  220. 
  

   Skull: 
  Two 
  adult 
  females 
  from 
  Rio 
  Jamundti, 
  near 
  Faro, 
  Brazil, 
  respec- 
  

   tively: 
  Greatest 
  length, 
  118.8, 
  11G.8; 
  orbital 
  width, 
  G8.3, 
  G3.C; 
  post- 
  

   orbital 
  constriction, 
  48.8, 
  51.3; 
  width 
  of 
  brain 
  case, 
  64, 
  63.3; 
  zygomatic 
  

   width. 
  C8.7. 
  66.7; 
  maxillary 
  tooth 
  row, 
  29.9, 
  29.5. 
  Two 
  adult 
  females 
  

   from 
  Lago 
  Cuipeua, 
  Brazil, 
  respectively: 
  Greatest 
  length, 
  113.6, 
  122.6; 
  

   (jrbital 
  width, 
  60.2, 
  68.2; 
  postorbital 
  constriction, 
  51.4, 
  51.4; 
  width 
  of 
  

   brain 
  case, 
  64.5, 
  64.6; 
  zygomatic 
  width, 
  69.4, 
  70.5; 
  maxillary 
  tooth 
  row, 
  

   29.9, 
  29.5. 
  

  

  Remorks. 
  — 
  Linnaeus, 
  in 
  tlie 
  tenth 
  edition 
  of 
  Systema 
  Naturae 
  (vol. 
  

   1, 
  J). 
  26, 
  1758) 
  combined 
  the 
  previously 
  published 
  descriptions 
  of 
  a 
  

   spider 
  monkey 
  and 
  of 
  a 
  howler 
  monkey 
  in 
  formulating 
  his 
  diagnosis 
  of 
  

   ySimia^ 
  paniscus. 
  The 
  spider 
  monkey 
  is 
  described 
  in 
  the 
  following 
  

   words: 
  "Simla 
  fusca 
  major, 
  palmis 
  tetradactylis, 
  cauda 
  prehensili 
  ad 
  

   apicem 
  subtus 
  nuda," 
  and 
  this 
  is 
  a 
  word-for-word 
  quotation 
  from 
  the 
  

   account 
  of 
  the 
  "four-fingered 
  monkey" 
  published 
  by 
  Browne 
  (The 
  civil 
  

   and 
  natural 
  history 
  of 
  Jamaica, 
  p. 
  489, 
  1789; 
  edition 
  of 
  1756 
  not 
  con- 
  

   sulted). 
  The 
  longer 
  diagnosis 
  at 
  the 
  end 
  of 
  Linnaeus's 
  account 
  of 
  

   prini.scus 
  seems 
  to 
  be 
  based 
  mainly 
  on 
  the 
  accounts 
  of 
  the 
  "Guariba" 
  

   publi.shed 
  by 
  Marcgrave 
  (Historiae 
  rerum 
  naturalium, 
  p. 
  226, 
  1648; 
  

   and 
  Ilistoria 
  natuial 
  do 
  Brasil, 
  p. 
  226, 
  1942) 
  and 
  by 
  Ray 
  (Synopsis 
  

   melhodica 
  animalium 
  quadrupi'«hnn 
  et 
  serpentini 
  generis, 
  p. 
  153, 
  

   1693), 
  .supplemented 
  by 
  additional 
  anatomical 
  details 
  which 
  are 
  

   credited 
  to 
  Hallman 
  and 
  Aymen. 
  

  

  In 
  thf 
  twelfth 
  edition, 
  however, 
  Linnaeus 
  (Systema 
  naturae, 
  ed. 
  12, 
  

   vf)l. 
  1. 
  J). 
  37, 
  1766) 
  seems 
  to 
  have 
  recognized 
  that 
  (he 
  above-mentioned 
  

   combination 
  was 
  inaccurate, 
  and 
  of 
  the 
  tenth 
  edition 
  references 
  he 
  

   cited 
  only 
  that 
  of 
  Browne 
  (op. 
  rit., 
  1756, 
  |). 
  189) 
  in 
  the 
  synonymy 
  of 
  

   [Shnia] 
  paiihcuJi. 
  With 
  the 
  exception 
  of 
  "Pedes 
  Sc 
  Cau(hi 
  dimidia 
  

   exterior 
  bnninea,'' 
  this 
  revised 
  diagnosis 
  ai)|)lied 
  to 
  the 
  "coaita." 
  Fur- 
  

   thermore, 
  in 
  the 
  twelfth 
  edition 
  Linnaeus 
  {i>p. 
  r/'f., 
  p. 
  37, 
  1766) 
  i)laced 
  

   the 
  references 
  to 
  Marcgrave 
  and 
  Kay. 
  which 
  had 
  l)een 
  cited 
  under 
  

   paniy(ru.t 
  in 
  the 
  tenth 
  edition, 
  in 
  the 
  syii'inymy 
  of 
  the 
  howler 
  monkey, 
  

   [,S/////V/. 
  I 
  htlzehul. 
  We 
  are 
  therefore 
  of 
  the 
  o[)inion 
  that 
  Limiaeus 
  in 
  

  

  