﻿254 
  E. 
  EAY 
  LANKESTEE. 
  

  

  supplementary 
  pair 
  of 
  trachea) 
  opening 
  behind 
  the 
  basal 
  

   segment 
  of 
  the 
  fourth 
  appendage 
  of 
  the 
  prosoma. 
  

  

  Intromittenfc 
  organ 
  of 
  male 
  lodged 
  on 
  the 
  dorsal 
  side 
  of 
  

   the 
  first 
  pair 
  of 
  pi'osomatic 
  appendages. 
  

  

  Taniilies 
  : 
  Hexisopodidje 
  (Hexisopus). 
  Solpugidfe 
  (Sol- 
  

   puga^ 
  Rhagodes). 
  Galeodidee 
  (Galeodes). 
  

  

  Remarks. 
  — 
  These 
  most 
  strange-looking 
  Arachnids 
  occur 
  

   in 
  warmer 
  temperate^ 
  and 
  tropical 
  regions 
  of 
  Asia, 
  Africa, 
  

   and 
  America. 
  Their 
  anatomy 
  has 
  not 
  been 
  studied 
  as 
  yet 
  

   by 
  means 
  of 
  freshly 
  killed 
  material, 
  and 
  is 
  imperfectly 
  known, 
  

   though 
  the 
  presence 
  of 
  the 
  coxal 
  glands 
  was 
  determined 
  by 
  

   Macleod 
  in 
  1884. 
  The 
  proportionately 
  enormous 
  chelae 
  

  

  S' 
  S" 
  2 
  1 
  VI 
  V 
  s 
  IV 
  lil 
  11 
  I 
  

  

  OpisfJwsoma 
  Prnsomn 
  

  

  Fig. 
  69. 
  — 
  Galeodes, 
  sp., 
  one 
  of 
  the 
  Solifugse. 
  I 
  to 
  VI, 
  the 
  six 
  

   prosomatic 
  limbs 
  cut 
  short 
  ; 
  o, 
  the 
  eyes 
  ; 
  b, 
  c, 
  demarcated 
  arese 
  of 
  

   the 
  cephalic 
  or 
  first 
  prosomatic 
  plate 
  corresponding 
  respectively 
  to 
  

   appendages 
  I, 
  IT, 
  III 
  and 
  to 
  appendage 
  IV 
  (see 
  Fig. 
  68) 
  ; 
  d, 
  second 
  

   plate 
  of 
  the 
  prosoma-carrying 
  appendage 
  V; 
  e, 
  third 
  plate 
  of 
  the 
  

   prosoma-carrying 
  appendage 
  VI. 
  The 
  prsegenital 
  somite 
  is 
  absent. 
  

   1, 
  first 
  somite 
  of 
  the 
  opisthosoma 
  ; 
  2, 
  second 
  do. 
  ; 
  S, 
  prosomatic 
  

   tracheal 
  aperture 
  between 
  legs 
  IV 
  and 
  V; 
  S'and 
  S",_opisthosomatic 
  

   tracheal 
  apertures 
  ; 
  10, 
  tenth 
  opisthosomatic 
  somite 
  ; 
  #«, 
  anus. 
  

   (Original.) 
  

  

  (chelicerffi) 
  of 
  the 
  first 
  pair 
  of 
  appendages 
  are 
  not 
  provided 
  

   with 
  poison 
  glands 
  ; 
  their 
  bite 
  is 
  not 
  venomous. 
  

  

  Galeodes 
  has 
  been 
  made 
  the 
  means 
  of 
  a 
  comparison 
  

   between 
  the 
  structure 
  of 
  the 
  Arachnida 
  and 
  Hexapod 
  insects 
  

   by 
  Haeckel 
  and 
  other 
  writers, 
  and 
  it 
  was 
  at 
  one 
  time 
  

   suo-o-ested 
  that 
  there 
  was 
  a 
  genetic 
  affinity 
  between 
  the 
  two 
  

   groups 
  — 
  through 
  Galeodes, 
  or 
  extinct 
  forms 
  similar 
  to 
  it. 
  

   The 
  segmentation 
  of 
  the 
  prosoma 
  and 
  the 
  form 
  of 
  the 
  

   appendages 
  bear 
  a 
  homoplastic 
  similarity 
  to 
  the 
  head, 
  pro-, 
  

   meso-, 
  and 
  meta-thorax 
  of 
  a 
  Hexapod 
  with 
  mandibles, 
  maxil- 
  

   lary 
  palps, 
  and 
  three 
  pairs 
  of 
  walking 
  legs 
  ; 
  whilst 
  the 
  

  

  