﻿580 
  VROCEEDINdS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  

  

  genus 
  couspicaous 
  iu 
  tbe 
  central 
  islands 
  by 
  its 
  absence, 
  while 
  Cebu 
  

   lacks 
  the 
  genera 
  Chrysocolaptes 
  and 
  Orthotomus, 
  and 
  is 
  without 
  a 
  single 
  

   known 
  representative 
  of 
  the 
  Bucerotidae 
  and 
  Timeliidae. 
  

  

  What 
  liavc 
  we 
  to 
  set 
  over 
  against 
  this 
  by 
  way 
  of 
  proof 
  of 
  relation- 
  

   ship 
  with 
  the 
  central 
  Philippines? 
  Simply 
  the 
  occurrence 
  of 
  eight 
  

   species 
  of 
  birds 
  characteristic, 
  on 
  the 
  whole, 
  of 
  the 
  central 
  group, 
  but 
  

   in 
  three 
  instances 
  at 
  least 
  {Aethopi/f/a 
  maf/nifica, 
  Hylotetye 
  uniichelli, 
  

   and 
  Fhahotreron 
  n'ujronon) 
  ranging 
  beyond 
  it 
  to 
  the 
  north 
  as 
  well 
  as 
  to 
  

   Cebu. 
  

  

  It 
  seenis 
  to 
  nie 
  evident 
  lioni 
  the 
  large 
  number 
  of 
  important 
  forms 
  iu 
  

   the 
  central 
  Philippines 
  which 
  do 
  not 
  occur 
  in 
  Cebu, 
  and 
  from 
  those 
  iu 
  

   Cebu 
  which 
  are 
  wanting 
  in 
  the 
  central 
  Philippines, 
  that 
  the 
  avifauuae 
  

   of 
  the 
  two 
  islands 
  were 
  originally 
  very 
  distinct. 
  The 
  wonder 
  is 
  not 
  

   that 
  eight 
  species 
  should 
  have 
  made 
  their 
  way, 
  in 
  one 
  direction 
  or 
  the 
  

   other, 
  over 
  4 
  miles 
  of 
  sea, 
  but 
  rather 
  that 
  thirty 
  four 
  species 
  should 
  

   have 
  failed 
  to 
  cross, 
  or, 
  having 
  crossed, 
  should 
  have 
  failed 
  to 
  establish 
  

   themselves. 
  

  

  In 
  this 
  connection 
  it 
  is 
  interesting 
  to 
  note 
  the 
  absence 
  of 
  deer 
  in 
  

   Cebu. 
  FeUs 
  hen'galensis 
  i^robably. 
  occurs, 
  as 
  the 
  natives 
  described 
  it 
  to 
  

   us. 
  We 
  saw 
  a 
  cap 
  made 
  of 
  its 
  fur, 
  and 
  also 
  saw 
  what 
  was 
  apparently 
  

   the 
  result 
  of 
  a 
  cross 
  between 
  it 
  and 
  a 
  domestic 
  cat. 
  

  

  The 
  channel 
  which 
  separates 
  Cebu 
  from 
  Negros, 
  although 
  narrow, 
  

   is 
  everywhere 
  very 
  deep, 
  the 
  chart 
  showing 
  110 
  to 
  120 
  fathoms 
  — 
  " 
  no 
  

   bottom." 
  I 
  myself 
  found 
  200 
  fathoms 
  of 
  water 
  not 
  far 
  from 
  the 
  Negros 
  

   coast. 
  1 
  believe 
  that 
  this 
  deep 
  channel 
  is 
  indicative 
  of 
  a 
  long-stand- 
  

   ing 
  separation 
  between 
  the 
  two 
  islands. 
  It 
  would, 
  it 
  seems 
  to 
  me, 
  be 
  

   more 
  reasonable 
  to 
  unite 
  the 
  chain 
  of 
  islands 
  which 
  extends 
  from 
  

   Luzon 
  to 
  I>asilan 
  into 
  a 
  single 
  group 
  than 
  to 
  include 
  Cebu 
  with 
  Panay, 
  

   Guimaras, 
  Masbate, 
  and 
  Negros. 
  

  

  BOHOL. 
  

  

  The 
  relationship 
  of 
  the 
  birds 
  of 
  Bohol 
  is 
  difipcult 
  to 
  determine, 
  as 
  

   the 
  last 
  trace 
  of 
  virgin 
  forest 
  seems 
  to 
  have 
  long 
  since 
  been 
  swept 
  

   from 
  the 
  island, 
  and 
  with 
  its 
  disappearance 
  a 
  considerable 
  part 
  of 
  the 
  

   record 
  of 
  Bohol's 
  past, 
  as 
  furnished 
  by 
  its 
  birds, 
  has 
  been 
  forever 
  

   blotted 
  out. 
  

  

  Of 
  the 
  54 
  species 
  of 
  birds 
  known 
  to 
  inhabit 
  the 
  island 
  but 
  13 
  are 
  

   Philippine 
  species, 
  aiul 
  most 
  of 
  these 
  are 
  wide-ranging 
  forms 
  which 
  

   afford 
  us 
  no 
  evidence 
  of 
  value. 
  

  

  The 
  three 
  exceptions 
  to 
  this 
  rule, 
  Loriculus 
  apicalis, 
  Orthotomvs 
  

   fro7italis, 
  and 
  Phahotreroti 
  brerirostris, 
  all 
  j)oiut 
  unequivocally 
  to 
  a 
  

   relationship 
  between 
  the 
  birds 
  of 
  Bohol 
  and 
  those 
  of 
  the 
  eastern 
  and 
  

   southern 
  islands 
  rather 
  than 
  with 
  Cebu 
  or 
  the 
  central 
  Philippines. 
  

   This 
  view 
  of 
  the 
  position 
  of 
  Bohol 
  is 
  made 
  the 
  more 
  probable 
  by 
  the 
  

   occurrenceof 
  (xaleopithecm, 
  a 
  mammal 
  which 
  ranges 
  through 
  the 
  south- 
  

   ern 
  and 
  eastern 
  islands 
  from 
  Basilan 
  to 
  Luzon, 
  but 
  is 
  unknown 
  iu 
  the 
  

   central 
  group. 
  

  

  