﻿MATURATION, 
  ETC., 
  OF 
  THE 
  EGG 
  OF 
  THE 
  AXOLOTL. 
  421 
  

  

  At 
  its 
  bottom 
  the 
  entrance-funnel 
  widens 
  out 
  into 
  the 
  

   sperm-sphere 
  abeadj 
  alluded 
  to. 
  This 
  is 
  an 
  area 
  of 
  yolk- 
  

   free 
  cytoplasm 
  possessing 
  a 
  finely 
  recticular 
  or 
  alveolar 
  

   structure 
  — 
  which 
  I 
  must 
  leave 
  an 
  open 
  question 
  — 
  and 
  con- 
  

   taining 
  scattered 
  about 
  in 
  it 
  a 
  few 
  pigment 
  granules. 
  The 
  

   spermatozoon 
  lies 
  in 
  it 
  in 
  such 
  a 
  manner 
  that 
  the 
  middle- 
  

   piece 
  here, 
  as 
  in 
  the 
  salamander 
  and 
  other 
  Urodela, 
  a 
  very 
  

  

  Fig. 
  a. 
  — 
  Outline 
  camera 
  drawing: 
  of 
  a 
  sect 
  ion 
  parallel 
  lo 
  but 
  not 
  actually 
  

   includiuj^ 
  the 
  ejrg-axis. 
  The 
  section 
  shows 
  the 
  entrance 
  cone 
  and 
  funnel 
  

   and 
  the 
  spermatozoon 
  lying 
  in 
  a 
  clear 
  area 
  at 
  the 
  bottom 
  of 
  the 
  latter, 
  the 
  

   sperm-sphere. 
  The 
  superficial 
  pinrment 
  of 
  the 
  animal 
  hemisphere 
  is 
  represented, 
  

   but 
  the 
  yolk-granules 
  are 
  omitted. 
  The 
  sperm-sphere 
  is 
  dotted. 
  

  

  large, 
  easily 
  distinguishable 
  body, 
  lies 
  nearest 
  the 
  interior 
  of 
  

   the 
  ovum, 
  while 
  the 
  head 
  and 
  tail, 
  bent 
  on 
  one 
  another 
  

   at 
  this 
  point, 
  are 
  both 
  directed 
  outwards 
  up 
  the 
  entrance- 
  

   funnel. 
  It 
  is 
  as 
  though 
  the 
  apical 
  body 
  of 
  the 
  sperm-head 
  

   had 
  on 
  entering 
  been 
  caught 
  amidst 
  the 
  yolk-granules, 
  and 
  

   the 
  middle-piece 
  then 
  been 
  swept 
  onwards 
  into 
  the 
  interior 
  of 
  

  

  