﻿250 
  

  

  E. 
  EAY 
  LANKESTER. 
  

  

  it 
  is 
  cautiously 
  advanced 
  by 
  the 
  male 
  spider 
  to 
  the 
  genital 
  

   aperture 
  of 
  the 
  female. 
  

  

  For 
  au 
  account 
  of 
  the 
  courtship 
  and 
  dancing 
  of 
  spiders, 
  of 
  

   their 
  webs 
  and 
  floating 
  lines, 
  the 
  reader 
  is 
  referred 
  to 
  the 
  

  

  pr(F-l 
  2 
  3 
  i 
  56789 
  10 
  

   1 
  II 
  III 
  IV 
  V 
  VI 
  //fH 
  Ophthofoma 
  

  

  Prosoma 
  

  

  Fig. 
  05. 
  — 
  Koenenia 
  mirabilis, 
  Grassi, 
  one 
  of 
  the 
  Palpigradi. 
  

   A, 
  ventral 
  view 
  of 
  prosoma 
  and 
  of 
  anterior 
  region 
  of 
  opistliosoma 
  

   with 
  tiie 
  appendages 
  cut 
  off 
  near 
  the 
  base; 
  « 
  and 
  b, 
  prosternites; 
  

   c, 
  mesosternite; 
  and 
  d, 
  metasternite 
  of 
  the 
  prosoma;/, 
  ventral 
  

   surface 
  of 
  the 
  prsegenital 
  somite 
  ; 
  ff, 
  sternite 
  of 
  the 
  genital 
  somite 
  

   (first 
  opistiiosomatic 
  somite). 
  B, 
  dorsal 
  view. 
  I 
  to 
  VI, 
  prosomatic 
  

   appendages 
  ; 
  1 
  opislh, 
  genital 
  somite 
  (first 
  opistiiosomatic 
  somite). 
  

   C, 
  lateral 
  view. 
  I 
  to 
  VI, 
  prosomatic 
  appendages; 
  a, 
  b, 
  c, 
  the 
  three 
  

   tergal 
  plates 
  of 
  the 
  prosoma 
  ; 
  pr<jegen, 
  the 
  pra3genital 
  somite 
  ; 
  1 
  to 
  

   10, 
  the 
  ten 
  somites 
  of 
  the 
  opisthosoma. 
  D, 
  chelicera. 
  (Original 
  

   drawing 
  by 
  Pocock 
  and 
  Pickard-Cambridge, 
  after 
  Hansen 
  and 
  

   Sorensen.) 
  

  

  works 
  of 
  M'Cook 
  (30) 
  and 
  the 
  Peckhams 
  (31), 
  whilst 
  an 
  

   excellent 
  account 
  of 
  the 
  nests 
  of 
  trap- 
  door 
  spiders 
  is 
  given 
  by 
  

  

  