﻿94 
  

  

  Dr. 
  R. 
  W. 
  Shufeldt 
  on 
  

  

  33. 
  Pelvis 
  essentially 
  agreeing 
  

   with 
  the 
  pelvis 
  in 
  most 
  Swallows. 
  

   The 
  leading 
  sacral 
  vertebra 
  do 
  not 
  

   markedly 
  project 
  be3^ond 
  the 
  ilia. 
  

  

  34. 
  Sternum 
  unuotched 
  poste- 
  

   riorly 
  ; 
  comparatively 
  large 
  cos- 
  

   tal 
  processes 
  ; 
  small 
  manubrium 
  ; 
  

   deep 
  carina, 
  which 
  latter 
  and 
  the 
  

   sternal 
  body 
  are 
  always 
  riddled 
  

   with 
  large 
  vacuities. 
  

  

  35. 
  12 
  cervical 
  vertebrfe 
  with- 
  

   out 
  free 
  ribs 
  ; 
  13th 
  and 
  14th 
  verte- 
  

   brae 
  possess 
  freely 
  suspended 
  ribs 
  ; 
  

   while 
  from 
  the 
  loth 
  to 
  the 
  19th 
  

   inclusive 
  they 
  are 
  ti'ue 
  dorsal 
  verte- 
  

   bree 
  (5 
  for 
  this 
  species), 
  connected 
  

   with 
  the 
  sternum 
  by 
  costal 
  ribs. 
  

  

  36. 
  The 
  last 
  sacral 
  vertebra 
  is 
  

   the 
  29th. 
  

  

  33. 
  Pelvis 
  characteristic 
  and 
  pe- 
  

   culiarly 
  formed. 
  Two 
  entire 
  ver- 
  

   tebrse 
  project 
  beyond 
  the 
  ilia 
  

   (18th 
  and 
  19tli). 
  No 
  special 
  re- 
  

   semblance 
  to 
  the 
  pelvis 
  in 
  any 
  

   Swift. 
  

  

  34. 
  Sternum 
  unnotched 
  poste- 
  

   riorly 
  ; 
  very 
  small 
  costal 
  proce.sses 
  ; 
  

   no 
  manubrium 
  ; 
  comparatively 
  a 
  

   much 
  deeper 
  carina 
  ; 
  sternal 
  body 
  

   and 
  keel 
  never 
  perforated 
  by 
  va- 
  

   cuities. 
  

  

  35. 
  13 
  cervical 
  vertebrae 
  with- 
  

   out 
  free 
  ribs; 
  only 
  the 
  14th 
  ver- 
  

   tebra 
  possesses 
  a 
  freely 
  suspended 
  

   rib 
  ; 
  while 
  from 
  the 
  15th 
  to 
  the 
  

   17th 
  inclusive 
  they 
  are 
  true 
  dorsal 
  

   vertebrce 
  (only 
  3 
  for 
  this 
  suborder 
  

   of 
  birds 
  !), 
  connected 
  with 
  the 
  

   sternum 
  by 
  costal 
  ribs. 
  

  

  36. 
  The 
  last 
  sacral 
  vertebra 
  is 
  

   the 
  27th. 
  

  

  These 
  last 
  few 
  comparisons 
  simply 
  go 
  to 
  show 
  that 
  in 
  the 
  

   plan 
  of 
  the 
  Spinal 
  Column^ 
  Pelvis^ 
  and 
  Ribs, 
  a 
  typical 
  

   Swift 
  differs 
  very 
  materially 
  from 
  a 
  Humming-bird. 
  It 
  is 
  

   possible 
  that 
  Mr. 
  Ridgway 
  does 
  not 
  consider 
  such 
  differences 
  

   as 
  these 
  to 
  be 
  '^ 
  definite 
  differences.^-' 
  How 
  is 
  it, 
  then, 
  that 
  

   the 
  spinal 
  column, 
  pelvis, 
  and 
  I'ibs 
  in 
  a 
  Swift 
  agree 
  so 
  nearly 
  

   with 
  the 
  corresponding 
  parts 
  of 
  the 
  skeleton 
  in 
  almost 
  any 
  

   species 
  of 
  Swallow 
  ? 
  Does 
  not 
  the 
  significance 
  of 
  such 
  facts 
  

   bring 
  any 
  meaning 
  to 
  Mr. 
  Ridgway's 
  mind 
  ? 
  

  

  Cypseli. 
  

   37. 
  Furcula 
  a 
  very 
  broad 
  U- 
  

   shaped 
  one, 
  with 
  lateral 
  abutments 
  

   at 
  its 
  heads, 
  and 
  with 
  rudimentary 
  

  

  hypocleidium 
  ; 
  the 
  bone 
  harmon- 
  

   iously 
  proportioned 
  with 
  the 
  rest 
  of 
  

   the 
  skeleton. 
  

  

  38. 
  Coracoids 
  much 
  the 
  same 
  

   form 
  as 
  we 
  find 
  them 
  in 
  the 
  Swal- 
  

   lows. 
  

  

  TUOCHILI. 
  

  

  37. 
  Furcula 
  rather 
  of 
  a 
  very 
  

   broad 
  V-shaped 
  variety, 
  with 
  small 
  

   lateral 
  abutments 
  at 
  its 
  heads, 
  and 
  

   Avith 
  rudimentary 
  hypocleidium, 
  

   wdth 
  the 
  bone 
  of 
  hair-lilce 
  dimen- 
  

   sions 
  as 
  compared 
  with 
  others 
  of 
  

   the 
  skeleton. 
  

  

  38. 
  Coracoids 
  very 
  peculiar, 
  as 
  

   the 
  tendinal 
  canal 
  is 
  closed 
  by 
  bone, 
  

   and 
  the 
  shaft 
  is 
  perforated 
  by 
  a 
  

   large 
  foramen 
  below 
  it. 
  Totally 
  

   unlike 
  this 
  bone 
  in 
  the 
  Cypseli. 
  

  

  