﻿308 
  W. 
  BLAXLAND 
  BBNHAM. 
  

  

  formed 
  of 
  cubical 
  cells, 
  in 
  which 
  I 
  could 
  not 
  detect 
  cilia, 
  but 
  

   the 
  lower 
  lip 
  is 
  as 
  yet 
  not 
  prominent; 
  but 
  by 
  the 
  time 
  the 
  

   worm 
  is 
  sexually 
  mature 
  the 
  lip 
  of 
  the 
  funnel 
  becomes 
  a 
  

   much 
  more 
  prominent 
  structure. 
  

  

  The 
  hinder 
  wall 
  of 
  Segment 
  XII 
  is 
  pouched, 
  and 
  in 
  the 
  

   ovisac 
  so 
  formed 
  are 
  some 
  large 
  ova; 
  others 
  lie 
  free 
  in 
  

   the 
  segment, 
  and 
  still 
  others 
  are 
  free 
  in 
  Segment 
  XIII 
  under 
  

   the 
  sperm-sac 
  ; 
  while 
  in 
  the 
  fourteenth 
  segment 
  still 
  larger 
  

   eggs 
  distend 
  the 
  body 
  (fig. 
  1). 
  Tlie 
  presence 
  of 
  eggs 
  in 
  various 
  

   stages 
  of 
  development 
  in 
  Segment 
  XIII 
  led 
  me 
  to 
  expect 
  a 
  

   second 
  pair 
  of 
  ovaries 
  here, 
  but 
  I 
  have 
  failed 
  to 
  make 
  them 
  

   out. 
  It 
  is 
  true 
  that 
  a 
  small 
  group 
  of 
  cells 
  appears 
  in 
  trans- 
  

   verse 
  sections 
  to 
  be 
  attached 
  to 
  the 
  underside 
  of 
  the 
  ovisac; 
  

   this 
  I 
  took 
  at 
  first 
  for 
  a 
  second 
  ovary, 
  but 
  following 
  the 
  

   sections 
  along, 
  it 
  became 
  evident 
  that 
  it 
  was 
  only 
  a 
  group 
  of 
  

   small 
  " 
  nutritive 
  " 
  cells 
  adherent 
  to 
  a 
  larger 
  ovum. 
  The 
  

   mass 
  is 
  free 
  in 
  the 
  segment, 
  and 
  moreover 
  there 
  is 
  no 
  trace 
  

   of 
  a 
  second 
  pair 
  of 
  oviducts 
  nor 
  their 
  funnels 
  in 
  either 
  of 
  

   my 
  two 
  specimens. 
  

  

  The 
  funnel 
  of 
  the 
  oviduct 
  (in 
  Segment 
  XII) 
  is 
  so 
  con- 
  

   spicuous 
  an 
  object, 
  its 
  nuclei 
  are 
  so 
  deeply 
  stained, 
  and 
  the 
  

   funnel 
  is 
  so 
  thick, 
  that 
  I 
  feel 
  sure 
  that 
  I 
  have 
  made 
  no 
  error 
  in 
  

   this 
  matter. 
  Moreover, 
  in 
  the 
  longitudinal 
  sections 
  the 
  three 
  

   pairs 
  of 
  young 
  gonads 
  and 
  funnels 
  are 
  quite 
  evident, 
  but 
  no 
  

   correspouding 
  fourth 
  pair 
  exists. 
  

  

  In 
  Segments 
  XI, 
  XII, 
  and 
  XIII 
  there 
  is 
  a 
  pair 
  of 
  solid 
  

   glands 
  connected 
  with 
  the 
  epidermis. 
  In 
  the 
  twelfth 
  seg- 
  

   ment 
  the 
  gland 
  opens 
  in 
  the 
  neighbourhood 
  of 
  the 
  ventral 
  

   chaeta 
  on 
  each 
  side, 
  but 
  in 
  each 
  of 
  the 
  eleventh 
  and 
  

   thirteenth 
  segments 
  the 
  two 
  glands 
  open 
  below 
  the 
  nerve- 
  

   cord 
  in 
  the 
  median 
  line. 
  Each 
  gland 
  (fig. 
  30) 
  consists 
  of 
  

   a 
  group 
  of 
  long 
  club-shaped 
  cells, 
  with 
  faintly 
  granular 
  and 
  

   vacuolated 
  contents, 
  which 
  are 
  not 
  stained 
  by 
  hsemalum. 
  

   The 
  gland 
  projects 
  freely 
  into 
  the 
  coelom, 
  and 
  the 
  necks 
  of 
  

   the 
  cells 
  are 
  easily 
  traceable 
  through 
  the 
  epidermis. 
  In 
  

   each 
  case 
  the 
  gland 
  is 
  nearly 
  ot 
  the 
  same 
  length 
  as 
  the 
  

   segment. 
  

  

  