﻿PLATE 
  XXII. 
  

  

  Phoherus 
  tenuimanus 
  (p. 
  171). 
  

   (Acanthocaris 
  tenuimana 
  on 
  Plate.) 
  

  

  Pereion, 
  with 
  the 
  lateral 
  waU 
  of 
  the 
  carapace 
  removed 
  to 
  show 
  the 
  natural 
  position 
  

   and 
  arrangement 
  of 
  the 
  branchiae 
  ; 
  i, 
  second 
  gnathopod 
  ; 
  k-o, 
  pereiopoda. 
  

  

  Section 
  of 
  a 
  set 
  of 
  branchial 
  plumes 
  and 
  mastigobranchise 
  ; 
  mh, 
  mastigobranchise 
  ; 
  

   pdh, 
  podobranchia 
  ; 
  arh, 
  arth, 
  anterior 
  and 
  posterior 
  arthrobranchise 
  ; 
  plhr, 
  

   pleurobranchia. 
  Above 
  this 
  figure 
  are 
  seen 
  portions 
  of 
  the 
  anterior 
  and 
  pos- 
  

   terior 
  arthi'obranchia, 
  showing 
  their 
  approximation, 
  in 
  situ. 
  

  

  d. 
  Siagon 
  (or 
  mandible); 
  from 
  the 
  inside. 
  

  

  e. 
  First 
  siagnopod. 
  

  

  f. 
  Second 
  siagnopod. 
  

  

  g. 
  Third 
  siagnopod. 
  

  

  h. 
  First 
  gnathopod, 
  with 
  basecphysis, 
  mastigobrancliial 
  plate 
  and 
  podo- 
  

   branchia! 
  plume. 
  

  

  i. 
  Second 
  gnathopod, 
  with 
  basecphysis, 
  mastigobrauchial 
  ])late, 
  ;nid 
  

   podobranchial 
  plume. 
  

  

  