﻿ANATOMY 
  AND 
  RELATIONSHIP 
  OF 
  GLOSSY 
  CUCKOOS 
  — 
  BERGER 
  589 
  

  

  Ext. 
  rneta. 
  tend. 
  

   T. 
  p. 
  long. 
  

  

  .Abd. 
  p. 
  

  

  Flex. 
  c. 
  brev. 
  

  

  Ace. 
  flex. 
  

  

  cm. 
  

  

  I- 
  

  

  1 
  

  

  Figure 
  70. 
  — 
  Chrysococcyx 
  cupreus. 
  Palmar 
  view 
  of 
  part 
  of 
  left 
  wing 
  to 
  show 
  relationships 
  

   of 
  the 
  accessory 
  flexor 
  muscle 
  of 
  the 
  pollex. 
  Explanation 
  of 
  symbols: 
  Abd. 
  p., 
  abductor 
  

   pollicis; 
  Ace. 
  flex., 
  accessory 
  flexor 
  muscle; 
  Ext. 
  meta. 
  tend., 
  tendon 
  of 
  extensor 
  meta- 
  

   carpi 
  radialis; 
  Flex. 
  c. 
  brev., 
  flexor 
  carpi 
  ulnaris 
  brevis; 
  T. 
  p. 
  long., 
  tendon 
  of 
  tensor 
  

   patagii 
  longus. 
  

  

  Although 
  M. 
  tensor 
  patagii 
  longus 
  (figs. 
  69, 
  70) 
  has 
  a 
  common 
  

   origin 
  with 
  M. 
  tensor 
  patagii 
  brevis 
  from 
  the 
  superomedial 
  surface 
  

   of 
  the 
  furculum, 
  the 
  two 
  bellies 
  are 
  incompletely 
  fused 
  distally. 
  In 
  

   LamproTTiorpha 
  caprius, 
  M. 
  pectoralis, 
  pars 
  propatagialis, 
  is 
  a 
  well- 
  

   developed, 
  fleshy 
  fasciculus 
  14 
  mm. 
  in 
  length 
  and 
  5 
  mm. 
  wide 
  at 
  its 
  

   base 
  on 
  the 
  furculum. 
  The 
  belly 
  tapers 
  to 
  a 
  tendon 
  whose 
  direct 
  con- 
  

   tinuation 
  is 
  the 
  tendon 
  of 
  M. 
  tensor 
  patagii 
  longus. 
  The 
  belly 
  of 
  the 
  

   latter 
  muscle 
  (about 
  8 
  mm. 
  long 
  and 
  2 
  mm. 
  wide) 
  fuses 
  with 
  M. 
  pec- 
  

   toralis, 
  pars 
  propatagialis, 
  just 
  before 
  the 
  formation 
  of 
  the 
  common 
  

   tendon. 
  The 
  tendon 
  runs 
  distad 
  in 
  the 
  leading 
  edge 
  of 
  the 
  propa- 
  

   tagium 
  and 
  bifurcates 
  near 
  the 
  distal 
  end 
  of 
  the 
  radius. 
  The 
  main 
  

   tendon 
  fuses 
  with 
  the 
  fascia 
  of 
  the 
  manus 
  and 
  has 
  a 
  minor 
  attachment 
  

   to 
  the 
  extensor 
  process. 
  The 
  smaller 
  tendon 
  serves 
  as 
  the 
  origin 
  for 
  

   a 
  small 
  (4 
  mm. 
  long) 
  fleshy 
  belly 
  (fig. 
  70) 
  which 
  inserts 
  on 
  the 
  postero- 
  

   basal 
  corner 
  of 
  the 
  pollex 
  superficial 
  to 
  the 
  insertion 
  of 
  M. 
  flexor 
  pol- 
  

   licis, 
  which, 
  although 
  present, 
  is 
  poorly 
  developed. 
  Chrysococcyx 
  and 
  

   Chalcites 
  exhibit 
  this 
  same 
  structure, 
  which 
  I 
  have 
  found 
  neither 
  in 
  

   other 
  cuckoos 
  nor 
  in 
  literature 
  on 
  other 
  birds. 
  

  

  M. 
  coracobrachialis 
  anterior 
  is 
  similar 
  in 
  the 
  four 
  species 
  and, 
  as 
  in 
  

   Coccyzus 
  erythropthalmus^ 
  it 
  is 
  poorly 
  developed. 
  The 
  belly 
  is 
  sur- 
  

   rounded 
  by 
  a 
  dense 
  fascia 
  and, 
  in 
  fact, 
  the 
  muscle 
  almost 
  seems 
  to 
  be 
  

  

  