﻿PLATE 
  LXXVIII. 
  

  

  Sciacaris 
  telsonis 
  (p. 
  438). 
  

   Fig. 
  1. 
  Ventro-lateral 
  aspect 
  ; 
  enlarged 
  twenty 
  times. 
  

   , 
  l«i. 
  Third 
  pereiopod 
  ; 
  chela. 
  

  

  , 
  1^3. 
  First 
  pleopod 
  ; 
  appendage 
  at 
  base 
  of 
  flagellum. 
  

   , 
  Iz. 
  Telson 
  ; 
  dorsal 
  view. 
  

  

  , 
  2. 
  Mastigopus 
  stage 
  of 
  same 
  ; 
  enlarged 
  eighteen 
  times 
  (p. 
  439). 
  

   , 
  2c. 
  Second 
  antenna 
  ; 
  extremity 
  of 
  scaphocerite. 
  

   , 
  2z. 
  Telson 
  ; 
  dorsal 
  view. 
  

  

  , 
  3. 
  Acanthosoma 
  stage 
  of 
  same; 
  enlarged 
  twenty-one 
  times 
  (p. 
  441). 
  

   , 
  3z. 
  Telson 
  ; 
  side 
  view. 
  

  

  