﻿STEUCTURE 
  AND 
  CLASSIFICATION 
  OF 
  THE 
  ARACHNIDA. 
  245 
  

  

  with 
  a 
  single 
  claw, 
  and 
  quite 
  unmodified 
  (except 
  in 
  J"). 
  

   Eemaining- 
  pairs 
  of 
  appendages 
  similar 
  in 
  form 
  and 
  function, 
  

   each 
  tipped 
  with 
  two 
  or 
  three 
  claws. 
  Opisthosoma, 
  when 
  

   segmented, 
  showing 
  the 
  same 
  number 
  of 
  somites 
  as 
  in 
  the 
  

   Pedipalpi 
  ; 
  usually 
  unsegmented, 
  the 
  pra3geuital 
  somite 
  con- 
  

   stricted 
  to 
  form 
  the 
  waist; 
  the 
  appendages 
  of 
  its 
  third 
  and 
  

   fourth 
  somites 
  retained 
  as 
  spinning 
  mammillaj. 
  Respiratory 
  

  

  Tig. 
  60. 
  — 
  Lipliistius 
  dcsultor, 
  Schiodte, 
  one 
  of 
  the 
  Araucae 
  

   Mesothelie. 
  Dorsal 
  view. 
  I 
  to 
  VI, 
  the 
  prosomatic 
  appendages 
  ; 
  

   4, 
  5, 
  6, 
  the 
  fourth, 
  fifth, 
  and 
  sixth 
  tcrgites 
  of 
  the 
  opisthosoma. 
  

   Between 
  the 
  bases 
  of 
  the 
  sixth 
  pair 
  of 
  limbs 
  and 
  behind 
  the 
  proso- 
  

   matic 
  carapace 
  is 
  seen 
  the 
  tergite 
  of 
  the 
  small 
  prsegenital 
  somite. 
  

   (Original 
  by 
  Pickard-Cambridge 
  and 
  Pocock.) 
  

  

  organs 
  (see 
  Fig. 
  63, 
  stg), 
  as 
  in 
  the 
  Amblypygi, 
  or 
  with 
  the 
  

   posterior 
  pair, 
  rarely 
  the 
  anterior 
  pair 
  as 
  well, 
  replaced 
  by 
  

  

  VOL. 
  48, 
  PART 
  2. 
  NEW 
  SERIES. 
  17 
  

  

  