﻿PLATE 
  CI. 
  

  

  Alpheus 
  avarus 
  (p. 
  544). 
  

   Fig. 
  I. 
  Latuml 
  view 
  ; 
  enlarged 
  twice. 
  

  

  Alpheus 
  nephmus 
  (p. 
  563). 
  

  

  ,, 
  2. 
  Lateral 
  view 
  ; 
  enlarged 
  twice. 
  

  

  ,, 
  2k. 
  First 
  pereiopod 
  ; 
  larger 
  chela, 
  left. 
  

  

  ,, 
  2k'. 
  First 
  pereiopod 
  ; 
  smaller 
  chela, 
  right. 
  

  

  Alpheus 
  gracilipcs 
  (p. 
  561). 
  

  

  :i. 
  Lateral 
  view 
  ; 
  enlarged 
  three 
  times. 
  

  

  3c. 
  Cephalon, 
  frontal 
  region. 
  

  

  3^'. 
  First 
  pereiopod 
  ; 
  larger 
  chela. 
  

  

  oni. 
  Third 
  pereiopod 
  ; 
  terminal 
  joints. 
  

  

  3z. 
  Telson. 
  

  

  Alpheus 
  biungumdafus 
  (p. 
  562). 
  

  

  ,, 
  4. 
  Lateral 
  view 
  ; 
  enlai'ged 
  three 
  times. 
  

   „ 
  4o. 
  Fifth 
  jiei'eiopod 
  ; 
  terminal 
  joints. 
  

   ,, 
  4z. 
  Telson. 
  

  

  Beteeus 
  malleodigitus 
  (p. 
  565). 
  

  

  , 
  5. 
  Lateral 
  view 
  ; 
  enlarged 
  three 
  times. 
  

  

  , 
  5c. 
  Cephalon, 
  frontal 
  region. 
  

  

  , 
  5c. 
  Second 
  antennae 
  ; 
  scaphocerite. 
  

  

  , 
  5A;. 
  First 
  pereiopod 
  ; 
  larger 
  chela. 
  

  

  , 
  .'}/. 
  Second 
  pereiopod. 
  

  

  , 
  bp. 
  First 
  pleopod, 
  with 
  parasites 
  attached 
  to 
  peduncle; 
  stylamljlys 
  detached 
  and 
  

  

  enlarged. 
  

  

  , 
  5j9ar. 
  Parasitic 
  vesicle, 
  detached 
  ; 
  escaped 
  ovum, 
  enlarged. 
  

  

  , 
  5z. 
  Telson. 
  

  

  Betseus 
  microstylus 
  (p. 
  566). 
  

  

  ,, 
  6. 
  Lateral 
  view 
  ; 
  enlarged 
  three 
  times. 
  

  

  ,, 
  6c. 
  Cephalon, 
  frontal 
  region 
  and 
  scaphocerites. 
  

  

  ,, 
  Qc. 
  Se(-ond 
  antennae 
  ; 
  scaphocerite, 
  enlarged. 
  

  

  „ 
  6z. 
  Telson. 
  

  

  