﻿32 
  

  

  Mr. 
  F. 
  E. 
  Beddard 
  on 
  the 
  

  

  it 
  receives 
  a 
  strong 
  tendinous 
  slip 
  from 
  tlie 
  deltoid 
  ridge 
  of 
  

   the 
  humerus. 
  There 
  is 
  another 
  slip 
  reinforcing 
  the 
  longus 
  

   tendon. 
  The 
  tensor 
  patagii 
  brevis 
  tendon 
  is 
  perfectly 
  similar 
  

   to 
  that 
  of 
  the 
  African 
  Fin-foot 
  ; 
  the 
  biceps 
  slip, 
  however, 
  

   instead 
  of 
  ending 
  freely 
  upon 
  the 
  patagium, 
  as 
  it 
  does 
  in 
  that 
  

   bird, 
  joins 
  the 
  tendon 
  of 
  the 
  tensor 
  patagii 
  brevis, 
  which 
  is 
  

   also 
  an 
  unusual 
  arrangement, 
  it 
  being, 
  of 
  course, 
  more 
  com- 
  

   monly 
  attached 
  to 
  the 
  tendon 
  of 
  the 
  tensor 
  patagii 
  longus. 
  

   The 
  actual 
  dispositions 
  and 
  connections 
  of 
  the 
  several 
  muscles 
  

  

  Fig-. 
  1. 
  

  

  Patagial 
  muscles 
  of 
  Heliornis 
  surinamensis. 
  — 
  T.})., 
  tensor 
  patagii 
  ; 
  

   j5j., 
  biceps 
  ; 
  Bi.s., 
  biceps 
  slip 
  ; 
  x, 
  tendinous 
  slip 
  inserted 
  on 
  patagium 
  (P). 
  

  

  and 
  tendons, 
  which 
  are 
  somewhat 
  complicated, 
  are 
  shown 
  in 
  

   the 
  accompanying 
  drawing 
  (fig. 
  1) 
  . 
  The 
  biceps 
  slip 
  passes, 
  of 
  

   course, 
  below 
  the 
  tendon 
  of 
  the 
  tensor 
  patagii 
  brevis 
  ; 
  on 
  the 
  

   distal 
  side 
  of 
  this 
  tendon 
  it 
  ends 
  in 
  a 
  tendon 
  which 
  runs 
  down 
  

   the 
  patagium 
  and 
  is 
  inserted 
  on 
  to 
  the 
  tensor 
  patagii 
  tendon 
  

   just 
  before 
  its 
  insertion. 
  The 
  tendon 
  of 
  the 
  biceps 
  slip 
  is 
  

   exceedingly 
  fine, 
  and 
  not 
  always, 
  for 
  this 
  reason, 
  visible 
  ; 
  in 
  

   one 
  specimen 
  it 
  appeared 
  to 
  be 
  inserted 
  independently 
  on 
  to 
  

   the 
  fascia 
  covering 
  the 
  muscles 
  of 
  the 
  forearm 
  ; 
  in 
  another 
  

   specimen 
  the 
  tendon 
  of 
  the 
  biceps 
  slip 
  was 
  bifurcate 
  just 
  

   at 
  its 
  end. 
  Where 
  the 
  other 
  tendon 
  lettered 
  x 
  in 
  the 
  

  

  