﻿258 
  

  

  E. 
  RAY 
  LANKESTER. 
  

  

  somites, 
  and 
  a 
  smaller 
  in 
  front, 
  which 
  is 
  freely 
  articulated 
  to 
  

   the 
  former 
  and 
  folds 
  over 
  the 
  appendages 
  of 
  the 
  first 
  pair. 
  

   Ventral 
  area 
  without 
  distinct 
  sternal 
  plates. 
  Appendages 
  of 
  

   first 
  pair 
  bi-segmeuted, 
  completely 
  chelate. 
  Appendages 
  

   of 
  second 
  pair 
  with 
  their 
  basal 
  segments 
  uniting 
  in 
  the 
  

   middle 
  line 
  below 
  the 
  mouth, 
  weakly 
  chelate 
  at 
  apex. 
  

   Appendages 
  of 
  third; 
  fourth, 
  fifth, 
  and 
  sixth 
  pairs 
  similar 
  

   in 
  form 
  ; 
  their 
  basal 
  segments 
  in 
  contact 
  in 
  the 
  middle 
  line 
  

  

  Fjg. 
  75. 
  

  

  I'lG. 
  76. 
  

  

  Fig. 
  75. 
  — 
  Cryptostemma 
  Karscliii, 
  one 
  of 
  the 
  Podogona. 
  

   Ventral 
  view. 
  I 
  to 
  VI, 
  the 
  six 
  pairs 
  of 
  appendages 
  of 
  tlie 
  prosoma, 
  

   the 
  last 
  three 
  cut 
  short 
  ; 
  1, 
  2, 
  3, 
  4, 
  the 
  four 
  somites 
  of 
  tlie 
  opistho- 
  

   soma; 
  a, 
  hood 
  overhanging 
  the 
  first 
  pair 
  of 
  appendages 
  ; 
  /;, 
  position 
  

   of 
  the 
  genital 
  orifice 
  ; 
  c, 
  part 
  of 
  third 
  appendage 
  ; 
  d, 
  fourth 
  segment 
  

   of 
  second 
  appendage. 
  Observe 
  that 
  the 
  basal 
  segment 
  of 
  append- 
  

   age 
  III 
  does 
  not 
  meet 
  its 
  fellow 
  in 
  the 
  middle 
  line. 
  (Original 
  

   drawing 
  by 
  Pocock 
  and 
  Pickard-Cambridge.) 
  

  

  Fig. 
  76. 
  — 
  Cryptostemma 
  Karschii. 
  Extremity 
  of 
  the 
  fifth 
  

   pair 
  of 
  appendages 
  of 
  the 
  female 
  for 
  comparison 
  with 
  that 
  of 
  the 
  

   male 
  E 
  in 
  Fig. 
  73. 
  

  

  and 
  immovably 
  welded, 
  except 
  those 
  of 
  the 
  third 
  pair, 
  which 
  

   have 
  been 
  pushed 
  aside 
  so 
  that 
  the 
  bases 
  of 
  the 
  second 
  and 
  

   fourth 
  pairs 
  are 
  in 
  contact 
  with 
  each 
  other. 
  A 
  movable 
  

   membranous 
  joint 
  between 
  the 
  prosoma 
  and 
  the 
  opisthosoma, 
  

   the 
  generative 
  aperture 
  opening 
  upon 
  the 
  ventral 
  side 
  of 
  the 
  

   membrane. 
  Prasgenital 
  somite 
  suppressed, 
  the 
  opisthosoma 
  

   consisting 
  of 
  only 
  four 
  visible 
  somites, 
  in 
  addition 
  to 
  a 
  

   tubular 
  ring 
  round 
  the 
  anal 
  orifice. 
  Respiratory 
  organs 
  

  

  