﻿G. 
  M. 
  Thomson. 
  — 
  New 
  Zealand 
  Crustacea, 
  239 
  

  

  body, 
  also 
  with 
  fascicles 
  of 
  liaii's 
  on 
  the 
  under 
  surface 
  of 
  the 
  peduncle 
  ; 
  

   flagellum 
  with 
  between 
  40 
  and 
  50 
  articulations. 
  Gnathopoda 
  rather 
  small, 
  

   subequal; 
  carpus 
  somewhat 
  produced 
  on 
  its 
  inferior 
  surface; 
  propodos 
  

   ovate, 
  with 
  several 
  transverse 
  rows 
  of 
  spines 
  on 
  the 
  infero-posterior 
  

   margin 
  ; 
  palm 
  imperfectly 
  defined 
  ; 
  dactylos 
  slender, 
  smooth. 
  Three 
  

   posterior 
  paks 
  of 
  pereiopoda 
  having 
  the 
  basa 
  increasing 
  in 
  width. 
  Ante- 
  

   penultimate 
  pair 
  of 
  pleopoda 
  reaching 
  to 
  the 
  extremity 
  of 
  the 
  penultimate, 
  

   smooth 
  ; 
  penultimate 
  pair 
  with 
  a 
  few 
  spines 
  ; 
  ultimate 
  pair 
  with 
  the 
  rami 
  

   about 
  twice 
  as 
  long 
  as 
  the 
  peduncle, 
  thickly 
  studded 
  with 
  short 
  spines 
  and 
  

   fringed 
  with 
  long 
  ciha. 
  Telson 
  divided 
  to 
  nearly 
  half 
  its 
  length, 
  with 
  a 
  

   minute 
  spine 
  somewhat 
  remote 
  from 
  the 
  apex 
  at 
  each 
  side. 
  Length 
  '3 
  

   inch. 
  Semi-transparent 
  in 
  colour, 
  with 
  dark 
  blueish 
  spots. 
  

  

  Eock 
  pools, 
  Dunedin. 
  

  

  (Named 
  after 
  Prof. 
  Dana). 
  

  

  Genus 
  Pherusa, 
  Leach, 
  Edin. 
  Encyc, 
  vii., 
  p. 
  432, 
  etc. 
  ; 
  Spence 
  Bate, 
  

   Brit. 
  Mus. 
  Cat. 
  Amphip. 
  Crust., 
  p. 
  143. 
  

  

  Antennae 
  subequal 
  ; 
  superior 
  without 
  a 
  secondary 
  appendage. 
  Mandibles 
  

   with 
  an 
  appendage. 
  Maxillipeds 
  unguiculate, 
  and 
  furnished 
  with 
  a 
  squami- 
  

   form 
  plate. 
  Gnathopoda 
  subchelate. 
  Telson 
  single, 
  squamiform, 
  entire. 
  

   15. 
  Pherusa 
  novcd-zealanclice, 
  nov. 
  sp, 
  'Fig. 
  C.2. 
  

  

  Cephalon 
  produced 
  into 
  a 
  small, 
  acute 
  rostrum 
  between 
  the 
  bases 
  of 
  the 
  

   superior 
  antennae. 
  Eyes 
  oblong-reniform. 
  Two 
  posterior 
  segments 
  of 
  the 
  

   pereion 
  and 
  two 
  anterior 
  segments 
  of 
  the 
  pleon 
  produced 
  dorsally 
  into 
  two 
  

   teeth. 
  Antenna 
  about 
  as 
  long 
  as 
  body. 
  Peduncle 
  of 
  the 
  superior 
  pair 
  

   about 
  one-fifth 
  as 
  long 
  as 
  the 
  slender 
  flagellum 
  ; 
  basal 
  joint 
  very 
  short, 
  

   buried 
  in 
  front 
  of 
  the 
  cephalon, 
  second 
  joint 
  stout. 
  Gnathopoda 
  small. 
  

   First 
  pair 
  very 
  long 
  and 
  slender 
  ; 
  carpus 
  and 
  propodos 
  subequal, 
  hnear 
  ; 
  

   dactylos 
  minute, 
  transverse. 
  Second 
  pair 
  short 
  ; 
  propodos 
  expanded 
  above, 
  

   palm 
  obhquely 
  transverse, 
  defined 
  by 
  a 
  tooth. 
  Three 
  last 
  pairs 
  of 
  pereio- 
  

   poda 
  much 
  longer 
  than 
  preceding 
  ; 
  their 
  coxae 
  with 
  comblike 
  teeth 
  on 
  their 
  

   posterior 
  margins. 
  Third 
  segment 
  of 
  pleon 
  with 
  the 
  sides 
  produced 
  pos- 
  

   teriorly, 
  and 
  ending 
  abruptly 
  in 
  a 
  serrated 
  margin 
  (almost 
  smooth 
  in 
  young 
  

   specimens). 
  Posterior 
  pair 
  of 
  pleopoda 
  reaching 
  to 
  the 
  extremity 
  of 
  the 
  

   penultimate 
  pair. 
  Length 
  about 
  -3 
  inch. 
  

  

  Dunedin. 
  

  

  Oenus 
  Calhope, 
  Leach, 
  MS. 
  Brit. 
  Mus. 
  ; 
  Sioence 
  Bate, 
  Brit. 
  Mus. 
  Cat. 
  

   Amphip. 
  Crust., 
  p. 
  148. 
  

   Superior 
  antennae 
  without 
  a 
  secondary 
  appendage. 
  Mandibles 
  furnished 
  

   with 
  an 
  appendage. 
  Gnathopoda 
  having 
  the 
  propoda 
  in 
  the 
  second 
  or 
  both 
  

   pairs 
  largely 
  developed, 
  and 
  the 
  carpi 
  inferiorly 
  produced. 
  Telson 
  not 
  

   divided. 
  

  

  