﻿508 
  

  

  Dr. 
  L. 
  Cofftietti 
  de 
  Martiis 
  o?i 
  a 
  

  

  septum 
  x.-xi. 
  Opposite 
  to 
  them 
  are 
  found 
  the 
  spindle- 
  

   shaped 
  dilated 
  chambers 
  ("' 
  Samenmagazine 
  ") 
  at 
  the 
  be- 
  

   ginning 
  of 
  the 
  sperm-ducts. 
  

  

  A 
  pair 
  of 
  sperm-sacs 
  depends 
  from 
  the 
  posterior 
  surface 
  of 
  

   septum 
  xi.-xii. 
  

  

  These 
  organs 
  extend 
  slightly 
  into 
  the 
  xii. 
  segment, 
  

   where 
  their 
  surface 
  appears 
  a 
  little 
  furrowed 
  ; 
  the 
  expanded 
  

   portion 
  is 
  provided 
  posteriorly 
  with 
  a 
  tubular 
  appendix. 
  

   The 
  tubular 
  appendix 
  of 
  the 
  sperm-sac 
  of 
  the 
  left 
  side 
  is 
  

  

  Fig. 
  A. 
  — 
  Female 
  generative 
  organs 
  and 
  prostates 
  of 
  Polytoreutus 
  

  

  baralypton, 
  sp. 
  n. 
  X 
  4. 
  

   Yig, 
  B. 
  — 
  The 
  central 
  female 
  generative 
  organs 
  of 
  the 
  left 
  side, 
  more 
  

  

  magnified. 
  X 
  6. 
  

  

  ap^.=globular 
  appendix 
  ; 
  div.= 
  diverticulum 
  of 
  the 
  spermatheca 
  ; 
  e.c.= 
  

   egg-capsule; 
  e.s. 
  = 
  egg-sac 
  ; 
  ft'.=ligament 
  ; 
  o.d. 
  = 
  oviduct 
  ; 
  pr.= 
  

   prostate; 
  s.d. 
  = 
  sperm-duct 
  ; 
  s.p. 
  = 
  spermathecal 
  pore; 
  $= 
  female 
  

   pore. 
  

  

  short 
  and 
  closed 
  in 
  the 
  xii. 
  segment, 
  but 
  that 
  of 
  the 
  right 
  side 
  

   is 
  longer 
  and 
  reaches 
  the 
  xviii. 
  segment, 
  being 
  ribbon- 
  

   like 
  and 
  a 
  little 
  dilated 
  at 
  the 
  extremity. 
  This 
  inequality 
  in 
  

   the 
  length 
  of 
  the 
  sperm-sacs 
  has 
  also 
  been 
  found 
  by 
  Beddard 
  * 
  

  

  * 
  See 
  Proc. 
  Zool. 
  Soc. 
  1907, 
  pp. 
  417 
  et 
  seq. 
  

  

  