﻿Fig. 
  7- 
  — 
  Diagram 
  of 
  the 
  dorsal 
  surface 
  of 
  Limuius 
  poly- 
  

   piienius. 
  oc, 
  lateral 
  compound 
  eyes; 
  oc', 
  central 
  monomeniscous 
  

   eyes 
  ; 
  PA, 
  post-anal 
  spine 
  ; 
  I 
  to 
  VI, 
  the 
  six 
  appendage-bearing 
  

   somites 
  of 
  the 
  prosoma 
  ; 
  VIT, 
  probably 
  to 
  be 
  considered 
  as 
  the 
  

   tergum 
  of 
  the 
  genital 
  somite; 
  VII 
  to 
  XII, 
  the 
  six 
  somites 
  of 
  the 
  

   mesosoma; 
  XIII 
  to 
  XVIII, 
  the 
  six 
  somites 
  of 
  the 
  metasoma, 
  of 
  

   which 
  the 
  first 
  (marked 
  XIII 
  at 
  the 
  side 
  and 
  7 
  on 
  the 
  tergum) 
  is 
  

   provided 
  with 
  a 
  lateral 
  spine, 
  and 
  is 
  separated 
  by 
  ridges 
  from 
  the 
  

   more 
  completely 
  fused 
  five 
  hinder 
  somites 
  lettered 
  8 
  to 
  12. 
  

  

  [This 
  is 
  a 
  new 
  figure 
  replacing 
  the 
  Fig. 
  7 
  given 
  in 
  the 
  ' 
  Encyclo- 
  

   paedia. 
  It 
  is 
  at 
  present 
  a 
  matter 
  for 
  further 
  investigation 
  as 
  to 
  

   whether 
  the 
  prsegenital 
  somite 
  is 
  merely 
  represented 
  by 
  the 
  piece 
  

   marked 
  X 
  at 
  the 
  hinder 
  border 
  of 
  the 
  prosoma, 
  or 
  whether 
  the 
  area 
  

   marked 
  VII 
  is 
  the 
  tergum 
  of 
  the 
  prsegenital 
  somite, 
  and 
  that 
  marked 
  

   VIII 
  the 
  tergum 
  of 
  tiie 
  genital 
  somite. 
  The 
  disposition 
  of 
  the 
  

   muscles 
  and 
  of 
  the 
  entopophyses 
  should, 
  when 
  carefully 
  studied, 
  be 
  

   sufficient 
  to 
  settle 
  this 
  point. 
  — 
  E. 
  R. 
  L.] 
  

  

  