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  E. 
  RAY 
  LANKESTEB. 
  

  

  male 
  and 
  female 
  furnislied 
  with 
  a 
  large 
  pi'otrusible 
  copulatoiy 
  

   organ 
  lying 
  witliin 
  the 
  generative 
  orifice. 
  

  

  Sub-order 
  rt. 
  Cyphophthalmi 
  (= 
  Anepignathi). 
  — 
  First 
  

   sternal 
  plate 
  of 
  the 
  opistbosoma 
  small, 
  not 
  covering 
  the 
  

   genital 
  aperture, 
  which 
  in 
  tbe 
  adult 
  forms 
  a 
  gaping 
  orifice. 
  

   Opistbosoma 
  presenting 
  ten 
  tergal 
  and 
  nine 
  sternal 
  plates. 
  

   Carapace 
  narrowed 
  anteriorly 
  and 
  produced 
  forwards 
  so 
  as 
  

   to 
  overlap 
  considerably 
  the 
  basal 
  segment 
  of 
  the 
  appendages 
  

  

  Tig. 
  77. 
  — 
  Stylocellus 
  sumat.ranus, 
  one 
  of 
  tlie 
  Opiliones; 
  

   after 
  Tliorell. 
  Enlarged. 
  A, 
  dorsal 
  view 
  ; 
  I 
  to 
  VI, 
  the 
  six 
  pro- 
  

   somatic 
  appendaj^es. 
  B, 
  ventral 
  view 
  of 
  the 
  prosoma 
  and 
  of 
  the 
  first 
  

   somite 
  of 
  the 
  opisthosonia, 
  with 
  the 
  appendages 
  I 
  to 
  VI 
  cut 
  off 
  at 
  

   the 
  base 
  ; 
  a, 
  tracheal 
  stigma 
  ; 
  mx, 
  maxillary 
  process 
  of 
  the 
  coxte 
  of 
  

   the 
  third 
  pair 
  of 
  appendages 
  ; 
  g, 
  genital 
  aperture. 
  C, 
  ventral 
  

   surface 
  of 
  the 
  prosoma 
  and 
  opisthosonia; 
  a, 
  tracheal 
  stigma; 
  b, 
  last 
  

   somite. 
  D, 
  lateral 
  view 
  of 
  the 
  first 
  and 
  second 
  pair 
  of 
  apjiendages. 
  

   E, 
  lateral 
  view 
  of 
  the 
  whole 
  body 
  and 
  two 
  first 
  apiiendages, 
  showing 
  

   the 
  fusion 
  of 
  the 
  dorsal 
  elements 
  of 
  the 
  prosoma 
  into 
  a 
  single 
  plate, 
  

   and 
  of 
  those 
  of 
  the 
  opisthosonia 
  into 
  an 
  imperfectly 
  segmented 
  plate 
  

   continuous 
  with 
  that 
  of 
  the 
  prosoma. 
  

  

  of 
  the 
  first 
  pair 
  ; 
  basal 
  segments 
  of 
  appendages 
  of 
  second 
  

   pair 
  meeting- 
  in 
  the 
  middle 
  line 
  above 
  the 
  camarostome. 
  

   Remaining 
  appendages 
  stout, 
  having 
  one 
  claw 
  ; 
  their 
  basal 
  

  

  