﻿298 
  Mr. 
  E. 
  Hartert 
  on 
  the 
  Birds 
  of 
  

  

  This 
  species 
  is 
  not 
  rare 
  in 
  certain 
  places, 
  such 
  as 
  the 
  rocky 
  

   hills 
  covered 
  with 
  brushwood 
  and 
  cactus, 
  both 
  on 
  Aruba 
  and 
  

   Cura9ao, 
  but 
  it 
  is 
  absent 
  from 
  Bonaire, 
  thus 
  indicating 
  its 
  

   immigration 
  from 
  the 
  continent. 
  I 
  saw 
  it 
  in 
  the 
  bush 
  on 
  

   St. 
  Thomas, 
  where 
  it 
  has 
  already 
  been 
  stated 
  to 
  occur 
  by 
  

   Ridgway. 
  It 
  may 
  have 
  been 
  introduced 
  into 
  that 
  island 
  ; 
  but, 
  

   on 
  account 
  of 
  other 
  affinities 
  between 
  the 
  ornis 
  of 
  St. 
  Thomas 
  

   and 
  that 
  of 
  Cura9ao, 
  this 
  is 
  very 
  questionable. 
  

  

  — 
  8. 
  Myiarchus 
  brevipennis, 
  Hartert, 
  Bull, 
  B. 
  O. 
  C. 
  iii. 
  

   p. 
  xii; 
  id. 
  Ibis, 
  1893, 
  p. 
  123. 
  

  

  I 
  have 
  compared 
  this 
  new 
  insular 
  form 
  of 
  Myiarchus 
  with 
  

   specimens 
  in 
  Berlepsch^s 
  museum 
  and 
  with 
  the 
  fine 
  series 
  in 
  

   the 
  British 
  Museum, 
  and 
  find 
  that 
  it 
  is 
  closely 
  allied 
  to 
  

   Myiarchus 
  tyrannulus 
  [cf. 
  Scl. 
  Cat. 
  B, 
  B. 
  M. 
  xiv. 
  p. 
  251), 
  but 
  

   readily 
  distinguishable 
  from 
  it 
  by 
  its 
  shorter 
  wings 
  and 
  tail, 
  

   longer 
  tarsus, 
  the 
  more 
  olive-greyish 
  and 
  less 
  brownish 
  colour 
  

   of 
  the 
  upper 
  parts, 
  and 
  the 
  blackish 
  lower 
  mandible, 
  which 
  in 
  

   M. 
  tyranmdus 
  is 
  pale 
  brown. 
  

  

  It 
  is 
  remarkable 
  that 
  in 
  Venezuela 
  the 
  true 
  M. 
  tyrannulus 
  

   occurs, 
  and 
  that 
  the 
  Island 
  of 
  Grenada 
  is 
  inhabited 
  by 
  

   another 
  species, 
  M. 
  oheri, 
  Lawr. 
  Sclater 
  (/. 
  c.) 
  has 
  united 
  

   M. 
  oheri 
  with 
  M. 
  tyrannulus 
  ; 
  but 
  the 
  specimens 
  now 
  in 
  the 
  

   British 
  Museum 
  and 
  in 
  Berlepsch^s 
  collection 
  show 
  that 
  

   M. 
  oberi 
  is 
  a 
  very 
  distinct 
  species. 
  It 
  differs 
  in 
  the 
  much 
  

   greater 
  extent 
  of 
  the 
  rusty 
  colour 
  on 
  the 
  inner 
  webs 
  of 
  the 
  

   rectrices, 
  decidedly 
  darker 
  upper 
  surface, 
  longer 
  bill, 
  and 
  

   longer 
  wings 
  and 
  tail, 
  thus 
  pointing 
  more 
  to 
  M. 
  mexicanus 
  

   in 
  its 
  size, 
  but 
  not 
  in 
  the 
  colour 
  of 
  the 
  back. 
  Specimens 
  

   from 
  the 
  three 
  islands 
  Aruba, 
  Curasao, 
  and 
  Bonaire 
  are 
  

   quite 
  similar. 
  Total 
  length 
  about 
  7'3 
  inches, 
  wing 
  3'4 
  to 
  

   3-59, 
  tail 
  3-3 
  to 
  3*5, 
  culmen 
  0-7 
  to 
  0-8, 
  tarsus 
  0-75 
  to 
  0-85. 
  

  

  -^9. 
  SuBLEGATUs 
  GLABER, 
  Scl. 
  & 
  Salv. 
  P, 
  Z, 
  S. 
  1868, 
  p, 
  171, 
  

   pi. 
  xiii. 
  (Caracas); 
  Berl. 
  J. 
  f. 
  O. 
  1892, 
  p, 
  84 
  (Cura9ao), 
  

   Not 
  very 
  rare. 
  

  

  -if-lO. 
  Tyrannus 
  dominicensis 
  (Gm,). 
  

  

  This 
  bird 
  seems 
  to 
  be 
  very 
  rare 
  on 
  Aruba, 
  where 
  I 
  did 
  not 
  

   obtain 
  it, 
  but 
  once 
  saw 
  a 
  pair. 
  That 
  this 
  species 
  is 
  rarest 
  on 
  

  

  