﻿PLATE 
  LXV. 
  

  

  Sergestes 
  — 
  Development. 
  

  

  Acanthosoma 
  dorsispinalis 
  (370). 
  

   Fig. 
  1. 
  Lateral 
  view 
  ; 
  eularged 
  twenty 
  -five 
  times. 
  

  

  Acanthosoma 
  Isevirostratis^ 
  (p. 
  374). 
  

   „ 
  2. 
  Lateral 
  view; 
  enlarged 
  twenty-eight 
  times. 
  

  

  Mastigopus 
  dorsispinalis 
  (p. 
  375). 
  

   „ 
  3. 
  Lateral 
  view; 
  enlarged 
  twenty 
  times. 
  

   ,, 
  i.k.l. 
  Branchiae 
  attached 
  to 
  the 
  second 
  gnathopod, 
  and 
  first 
  and 
  second 
  pereiopoda. 
  

  

  Mastigopus 
  tenuis 
  (p. 
  428). 
  

   „ 
  4. 
  Lateral 
  view 
  ; 
  enlarged 
  twenty 
  times. 
  

   ,, 
  Ah. 
  Base 
  of 
  peduncle 
  of 
  first 
  antenna, 
  with 
  otolith. 
  

   „ 
  4c. 
  Second 
  antenna. 
  

   „ 
  Al. 
  Third 
  pereiopod 
  ; 
  extremity. 
  

  

  1 
  ifafcitot.— 
  North 
  of 
  Admiralty 
  Islands, 
  between 
  Stations 
  221 
  and 
  222. 
  Associated 
  -with 
  Acanthosoma 
  dorsispinalis 
  

   and 
  Mastigopus 
  dorsispinalis. 
  Length, 
  3 
  nun. 
  (0'12 
  in.). 
  

  

  