﻿PLATE 
  LXXVII. 
  

  

  Sergestes 
  longicollus 
  (p. 
  421). 
  

   Fig. 
  1 
  . 
  Lateral 
  view 
  ; 
  enlarged 
  ten 
  times. 
  

  

  Sergestes 
  pr^collus 
  (p. 
  423). 
  

   „ 
  2. 
  Lateral 
  aspect 
  ; 
  enlarged 
  ten 
  times. 
  

   „ 
  2m. 
  Third 
  pereiopod 
  ; 
  chela. 
  

  

  