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  E. 
  KAY 
  liANKRSl'ER. 
  

  

  the 
  base 
  of 
  the 
  seventh 
  pair 
  of 
  limbs, 
  and 
  may 
  be 
  repeated 
  on 
  

   the 
  fourth, 
  fifth, 
  and 
  sixth. 
  In 
  all 
  known 
  Pantopoda 
  the 
  

   size 
  of 
  the 
  body 
  is 
  quite 
  minute 
  as 
  compared 
  with 
  that 
  of 
  the 
  

   limbs 
  : 
  the 
  alimentary 
  canal 
  sends 
  a 
  long 
  caecum 
  into 
  each 
  

   leg 
  (cf. 
  the 
  Aranete), 
  and 
  the 
  genital 
  products 
  are 
  developed 
  

   in 
  gonocoels 
  also 
  placed 
  in 
  the 
  legs. 
  

  

  The 
  Pantopoda 
  are 
  divided 
  into 
  three 
  orders, 
  the 
  characters 
  

   of 
  which 
  are 
  dependent 
  on 
  variation 
  in 
  the 
  presence 
  of 
  the 
  

   full 
  number 
  of 
  legs. 
  

  

  Order 
  1 
  (of 
  the 
  Pantopoda). 
  Nymphonomorpha, 
  Pocock 
  (nov.) 
  

   (Fig. 
  43). 
  — 
  In 
  primitive 
  forms 
  belonging 
  to 
  the 
  family 
  Nym- 
  

  

  FiG. 
  43. 
  — 
  One 
  of 
  tlie 
  Nymphoiioiiiorplious 
  Pantopoda, 
  Nymphon 
  

   liispidum, 
  sliowing 
  tlie 
  seven 
  pairs 
  of 
  appendages 
  1 
  to 
  7 
  ; 
  ab, 
  the 
  

   rudimentary 
  opistliosoma; 
  5, 
  the 
  nioutli-bearing 
  proboscis. 
  (From 
  

   Parker 
  and 
  Haswell's 
  ' 
  Text-book 
  of 
  Zoology, 
  after 
  Hoek.) 
  

  

  phonida3 
  the 
  full 
  complement 
  of 
  appendages 
  is 
  retained 
  — 
  the 
  

   first 
  (mandibular), 
  the 
  second 
  (palpiform), 
  and 
  the 
  third 
  (ovi- 
  

   gerous) 
  pairs 
  being 
  well 
  developed 
  in 
  both 
  sexes. 
  In 
  certain 
  

   derivative 
  forms 
  constituting 
  the 
  family 
  Pallenida3, 
  however, 
  

   the 
  appendages 
  of 
  the 
  second 
  pair 
  are 
  either 
  rudimentary 
  or 
  

   atrophied 
  altogether. 
  

  

  Two 
  families: 
  1. 
  Nymphonidfe 
  (genus 
  Nymphon), 
  and 
  

   2. 
  Pallenidae 
  (genus 
  Pall 
  en 
  e). 
  

  

  Order 
  2. 
  Ascorhynchomorpha, 
  Pocock 
  (nov.). 
  — 
  Appendages 
  

   of 
  the 
  second 
  and 
  third 
  pairs 
  retained 
  and 
  developed, 
  as 
  in 
  

  

  