﻿CRUSTACEA. 
  299 
  

  

  from 
  Port 
  MoUc, 
  obtained 
  on 
  the 
  beach 
  (No. 
  92), 
  at 
  5-15 
  fms. 
  

   (No. 
  118), 
  and 
  14 
  fms. 
  (No. 
  93). 
  Some 
  of 
  these 
  (No. 
  95) 
  are 
  adult 
  

   males 
  of 
  large 
  size. 
  Also 
  a 
  small 
  female 
  from 
  Port 
  Denison, 
  

   4 
  fms. 
  (No. 
  111). 
  All 
  of 
  the 
  above 
  are 
  from 
  Dr. 
  Coppinger's 
  first 
  

   collection. 
  Also 
  a 
  small 
  male 
  from 
  Clairmont 
  Island 
  (No. 
  151), 
  

   and 
  two 
  specimens 
  from 
  Thursday 
  Island 
  — 
  a 
  female 
  from 
  the 
  beach 
  

   (No. 
  167) 
  and 
  a 
  male 
  from 
  a 
  depth 
  of 
  4-5 
  fms. 
  (No. 
  165) 
  — 
  in 
  the 
  

   second 
  collection. 
  

  

  ISOPODA. 
  

  

  1. 
  Ligia 
  gaudichaudii, 
  var. 
  australiensis, 
  Dana? 
  

  

  Here 
  are 
  somewhat 
  doubtfully 
  referred 
  several 
  specimens 
  obtained 
  

   on 
  the 
  beach 
  above 
  high-water 
  mark 
  at 
  Port 
  Molle. 
  Dana's 
  

   brief 
  diagnosis 
  was 
  based 
  on 
  imperfect 
  specimens 
  in 
  which 
  both 
  the 
  

   antenna; 
  and 
  uropoda 
  are 
  wanting; 
  and 
  as 
  Mr. 
  Haswell 
  had 
  seen 
  

   no 
  specimens 
  of 
  this 
  species, 
  and 
  therefore 
  adds 
  nothing 
  to 
  our 
  

   knowledge 
  about 
  it 
  in 
  his 
  Catalogue, 
  the 
  following 
  description 
  may 
  

   be 
  useful 
  : 
  — 
  

  

  The 
  body 
  is 
  oblong-oval, 
  moderately 
  convex, 
  but 
  little 
  laterally 
  

   dilated. 
  The 
  head 
  is 
  transverse, 
  with 
  its 
  anterior 
  margin 
  convexly 
  

   rounded, 
  without 
  any 
  median 
  rostriform 
  point, 
  its 
  upper 
  surface 
  

   granulated 
  and 
  transversely 
  sulcated, 
  one 
  of 
  the 
  sulci 
  running 
  

   parallel 
  to 
  the 
  posterior 
  margin, 
  and 
  others 
  bordering 
  the 
  posterior 
  

   margin 
  of 
  the 
  eyes. 
  The 
  segments 
  of 
  the 
  thorax 
  are 
  rather 
  in- 
  

   distinctly 
  granulated 
  above 
  ; 
  the 
  postero-latcral 
  angles 
  of 
  the 
  first 
  

   segment 
  are 
  nearly 
  right 
  angles, 
  those 
  of 
  the 
  second 
  and 
  third 
  

   slightly 
  more 
  acute, 
  those 
  of 
  the 
  fourth 
  to 
  seventh 
  segments 
  acute 
  and 
  

   posteriorly 
  prolonged, 
  yet 
  not 
  to 
  so 
  great 
  a 
  degree 
  as 
  in 
  some 
  species 
  

   of 
  the 
  genus. 
  The 
  segments 
  of 
  the 
  postabdomen 
  are 
  nearly 
  smooth 
  

   above 
  in 
  the 
  middle 
  line, 
  but 
  granulated 
  on 
  the 
  sides, 
  and 
  have 
  as 
  

   usual 
  the 
  postero-lateral 
  angles 
  acute 
  and 
  produced 
  ; 
  the 
  postero- 
  

   lateral 
  angles 
  of 
  the 
  penultimate 
  segment 
  scarcely 
  reach 
  more 
  than 
  

   halfway 
  to 
  the 
  apex 
  of 
  the 
  corresponding 
  angle 
  of 
  the 
  terminal 
  

   segment. 
  The 
  terminal 
  segment 
  is 
  longer 
  than 
  the 
  preceding 
  ; 
  

   the 
  posterior 
  margin 
  has 
  a 
  very 
  slight 
  median 
  prominence, 
  and 
  a 
  

   rather 
  deep 
  notch 
  close 
  to 
  the 
  postero-lateral 
  spine 
  ; 
  the 
  margin 
  

   of 
  the 
  notch, 
  although 
  sometimes 
  slightly 
  sinuated, 
  is 
  not 
  dentated 
  

   as 
  in 
  L. 
  fjaudicliaudli; 
  the 
  postero-lateral 
  spine 
  is 
  short 
  and 
  scarcely 
  

   reaches 
  beyond 
  the 
  level 
  of 
  the 
  posterior 
  margin. 
  The 
  eyes 
  are 
  

   very 
  large, 
  black. 
  The 
  minute 
  antennules 
  are 
  not 
  visible 
  in 
  a 
  dorsal 
  

   view. 
  The 
  antennae 
  are 
  shorter 
  than 
  the 
  animal, 
  and 
  have 
  the 
  

   penultimate 
  and 
  terminal 
  joints 
  of 
  the 
  antenna) 
  slender 
  and 
  elon- 
  

   gated, 
  the 
  terminal 
  longer 
  than 
  the 
  preceding 
  joint 
  ; 
  the 
  three 
  pre- 
  

   ceding 
  joints 
  are 
  robust 
  and 
  much 
  shorter 
  ; 
  the 
  fiagellum 
  composed 
  

   of 
  26-30 
  joints 
  ; 
  the 
  joints 
  of 
  the 
  legs 
  are 
  clothed 
  with 
  short 
  stiff 
  

   sdce, 
  which 
  are 
  most 
  abundant 
  on 
  the 
  inferior 
  margins 
  of 
  the 
  four 
  

   last 
  joints 
  ; 
  below 
  the 
  terminal 
  claw 
  is 
  a 
  second 
  small 
  subterminal 
  

   one 
  on 
  all 
  the 
  legs. 
  The 
  terminal 
  joint 
  of 
  the 
  stem 
  of 
  the 
  uropoda 
  

  

  