﻿STRUCTURE 
  AND 
  CLASSIFICATION 
  OF 
  THE 
  AOACHNIDA. 
  257 
  

  

  suggests 
  that 
  tliey 
  are 
  a 
  degenerate 
  group 
  derived 
  from 
  the 
  

   latter, 
  but 
  the 
  large 
  size 
  of 
  the 
  prgegeuital 
  somite 
  in 
  them 
  

  

  prcpgpn 
  12 
  3 
  

  

  l' 
  li 
  III 
  iV 
  vVii 
  ; 
  i 
  ! 
  

  

  12 
  3 
  10 
  

  

  Prosoma 
  Opisthos-oma 
  

  

  Tig. 
  72. 
  — 
  Garypus 
  litoralis, 
  one 
  of 
  the 
  Pseudoscorpiones. 
  

   Lateral 
  view. 
  I 
  to 
  VI, 
  basal 
  segments 
  of 
  the 
  sixth 
  prosomatic 
  

   appendages 
  ; 
  o, 
  eyes 
  ; 
  jtrcegen, 
  tergite 
  of 
  the 
  pia3genital 
  somite 
  ; 
  1, 
  

   genital 
  or 
  first 
  opistliosomatic 
  somite; 
  2, 
  3, 
  10, 
  the 
  second, 
  third, 
  

   and 
  tenth 
  somites 
  of 
  the 
  opisthosoma; 
  II, 
  tiie 
  minute 
  eleventh 
  

   somite; 
  a», 
  the 
  anus. 
  (Original.) 
  

  

  would 
  indicate 
  a 
  connection 
  with 
  forms 
  preceding 
  the 
  scor- 
  

   pions. 
  (Reference 
  to 
  literature, 
  37.) 
  

  

  Order 
  7. 
  Podogona 
  = 
  Meridogastra 
  (see 
  Figs. 
  73 
  to 
  7G). 
  — 
  

  

  Fig. 
  74. 
  

  

  IV 
  m 
  I 
  

  

  Fig. 
  73. 
  — 
  Cryptostemma 
  Karschii, 
  one 
  of 
  the 
  Podogona. 
  

   Dorsal 
  view 
  of 
  male, 
  enlarged 
  five 
  times 
  linear. 
  Ill 
  to 
  VI, 
  the 
  

   third, 
  fourth, 
  fifth, 
  and 
  sixth 
  appendages 
  of 
  the 
  prosoma 
  ; 
  a, 
  movable 
  

   (hinged) 
  sclerite 
  (so-called 
  hood) 
  overhanging 
  the 
  first 
  pair 
  of 
  

   appendages; 
  b, 
  fused 
  terga 
  of 
  the 
  prosoma 
  followed 
  by 
  the 
  opis- 
  

   thosoma 
  of 
  four 
  somites 
  ; 
  an, 
  anus 
  ; 
  E, 
  extremity 
  of 
  the 
  fifth 
  

   appendage 
  of 
  the 
  male 
  modified 
  to 
  subserve 
  copulation. 
  (Original 
  

   drawing 
  by 
  Pocock 
  and 
  Pickard-Canibridge.) 
  

  

  Fig. 
  74. 
  — 
  Cryptostemma 
  Karschii. 
  Anterior 
  aspect 
  of 
  the 
  

   prosoma 
  with 
  the 
  " 
  hood 
  " 
  removed. 
  I 
  to 
  IV, 
  first 
  to 
  fourth 
  

   appendages 
  of 
  the 
  prosoma; 
  a, 
  basal 
  segment 
  of 
  the 
  second 
  pair 
  of 
  

   appendages 
  meeting 
  its 
  fellow 
  in 
  the 
  middle 
  line 
  (see 
  Fig. 
  75). 
  

   (Original 
  drawing 
  by 
  Pocock 
  and 
  Pickard-Carabridge.) 
  

  

  Dorsal 
  area 
  of 
  prosoma 
  furnished 
  with 
  two 
  shields, 
  a 
  larger 
  

   behind 
  representing, 
  probably, 
  the 
  tergal 
  elements 
  of 
  the 
  

  

  