﻿PLATE 
  XVI. 
  

  

  Pentacheles 
  gracilis 
  (p. 
  1 
  46). 
  

  

  Fig. 
  1, 
  ?. 
  Dorsal 
  view 
  of 
  the 
  female 
  ; 
  enlarged 
  one 
  and 
  three-quarter 
  times. 
  

  

  „ 
  Ic. 
  Part 
  of 
  the 
  anterior 
  portion 
  of 
  the 
  cephalon 
  ; 
  enlarged, 
  showing 
  the 
  ocular 
  

   notch 
  (o), 
  with 
  the 
  position 
  of 
  the 
  ophthalmopod 
  traced 
  beneath 
  ; 
  first 
  

   antenna 
  {h) 
  ; 
  second 
  antenna 
  (c). 
  

  

  „ 
  lo. 
  Posterior 
  pair 
  of 
  pereiopoda 
  of 
  female. 
  

  

  ,, 
  2. 
  Lateral 
  view 
  of 
  the 
  same 
  animal. 
  

  

  Stereomastis 
  auriculata 
  (p. 
  159). 
  

   (Pentoeheles 
  auriculata 
  on 
  Plate.) 
  

  

  ,, 
  3, 
  ?. 
  Dorsal 
  view 
  of 
  the 
  female. 
  

  

  ,, 
  3c. 
  Anterior 
  portion 
  of 
  the 
  dorsal 
  surface 
  of 
  the 
  cephalon, 
  showing 
  the 
  ocular 
  

   notch 
  with 
  the 
  ophthalmopod 
  {a). 
  

  

  ,, 
  3c". 
  Anterior 
  portion 
  of 
  the 
  cephalon, 
  showing 
  the 
  lateral 
  and 
  under 
  view, 
  ophthal- 
  

   mopod 
  (a), 
  and 
  second 
  antenna 
  (c). 
  

  

  „ 
  3o. 
  Chela 
  of 
  posterior 
  pereiopod 
  ; 
  female. 
  

  

  ,, 
  ^q. 
  Second 
  pair 
  of 
  pleopoda. 
  

  

  ,, 
  4. 
  Lateral 
  view 
  of 
  the 
  same 
  animal. 
  

  

  