﻿(j. 
  M. 
  Thomson. 
  — 
  New 
  Zealand 
  Crustacea. 
  233 
  

  

  Suh-tribe 
  III. 
  Cymothoidea. 
  

   Fam. 
  I. 
  Cymothoiclfe. 
  

   Genus 
  Ceratotlioa, 
  Miers' 
  Cat., 
  p. 
  104. 
  

   5. 
  Ceratotlioa 
  trigonocepliala. 
  

  

  Cymothoa 
  trigonocepliala, 
  M. 
  Edw. 
  Hist. 
  Nat. 
  Crust., 
  iii., 
  p. 
  272. 
  

  

  Head 
  small, 
  triangular, 
  having 
  the 
  antero-lateral 
  margins 
  very 
  concave 
  

   above 
  the 
  antennae, 
  and 
  the 
  front 
  narrow 
  but 
  obtuse, 
  and 
  projecting 
  a 
  little 
  

   beyond 
  the 
  base 
  of 
  the 
  inner 
  antennae. 
  Eyes 
  very 
  distinct. 
  Outer 
  antennae 
  

   considerably 
  longer 
  than 
  the 
  inner. 
  Anterior 
  margin 
  of 
  the 
  first 
  thoracic 
  

   segment 
  produced 
  a 
  little 
  at 
  the 
  corner 
  upon 
  the 
  head 
  so 
  as 
  to 
  give 
  rise 
  to 
  a 
  

   tooth 
  upon 
  the 
  median 
  line 
  ; 
  antero-lateral 
  prolongations 
  of 
  medium 
  size, 
  

   narrowing 
  in 
  front, 
  but 
  rounded 
  and 
  not 
  reaching 
  to 
  the 
  base 
  of 
  the 
  outer 
  

   antennae. 
  First 
  segment 
  of 
  the 
  abdomen 
  about 
  a 
  third 
  less 
  than 
  the 
  second, 
  

   which 
  exceeds 
  on 
  each 
  side 
  the 
  margin 
  of 
  the 
  last 
  thoracic 
  segment. 
  Pos- 
  

   terior 
  margm 
  of 
  the 
  fifth 
  segment 
  very 
  sinuous, 
  and 
  presenting 
  a 
  deep, 
  

   median 
  indentation. 
  Sixth 
  segment 
  large, 
  but 
  gradually 
  narrowing 
  from, 
  

   the 
  base, 
  rounded 
  posteriorly, 
  and 
  not 
  nearly 
  so 
  far 
  extended 
  as 
  the 
  terminal 
  

   plates 
  of 
  the 
  lateral 
  appendages. 
  Length 
  1'6 
  inch. 
  (My 
  specimens 
  are 
  

   about 
  1 
  inch 
  long). 
  

  

  Dunedin. 
  

  

  This 
  species 
  is 
  also 
  found 
  in 
  the 
  Australian 
  and 
  Chinese 
  Seas. 
  

  

  Fam. 
  III. 
  SphoeromidsB. 
  Miers' 
  Cat., 
  p. 
  109. 
  

   Genus 
  Amphoroidea, 
  M. 
  Ediv., 
  Hist. 
  Nat. 
  Crust., 
  iii., 
  p. 
  222. 
  

   Body 
  convex, 
  somewhat 
  oval 
  and 
  flexible. 
  Head 
  quadrilateral, 
  broader 
  

   than 
  long; 
  eyes 
  small, 
  occupying 
  the 
  lateral 
  margin; 
  anterior 
  margin 
  of 
  

   the 
  head 
  with 
  five 
  small 
  teeth. 
  Basal 
  joint 
  of 
  inner 
  antennse 
  very 
  large, 
  

   lamellate, 
  quadrilateral, 
  broader 
  in 
  front 
  than 
  behind, 
  horizontal, 
  and 
  in 
  

   contact 
  with 
  its 
  fellow; 
  second 
  joint 
  small, 
  inserted 
  at 
  the 
  side 
  of 
  the 
  first, 
  

   near 
  its 
  posterior 
  angle 
  ; 
  the 
  rest 
  almost 
  moniliform. 
  Outer 
  antennee 
  in- 
  

   serted 
  under 
  the 
  inner 
  and 
  directed 
  forwards 
  ; 
  the 
  peduncle 
  cylindiical, 
  

   terminal 
  joint 
  longer 
  than 
  that 
  of 
  the 
  inner 
  antennse. 
  Abdomen 
  broader 
  

   than 
  thorax; 
  last 
  joint 
  large, 
  scutiform 
  and 
  deeply 
  excavated 
  below. 
  

  

  6. 
  Amiohoroidea 
  faldfer 
  , 
  Hutton, 
  MS. 
  Cat. 
  Fig. 
  A. 
  5. 
  

  

  Smooth, 
  sub-depressed, 
  rounded 
  on 
  the 
  back. 
  Head 
  broader 
  than 
  long, 
  

   the 
  anterior 
  margin 
  three-lobed, 
  the 
  middle 
  one 
  pointed 
  and 
  acute 
  ; 
  lateral 
  

   margins 
  hollowed 
  ; 
  posterior 
  margin 
  straight, 
  sub-sinuated, 
  produced 
  

   posteriorly 
  on 
  either 
  side 
  into 
  a 
  truncated 
  lobe. 
  Basal 
  joint 
  of 
  inner 
  

   antennsB 
  longer 
  than 
  broad, 
  the 
  anterior 
  margin 
  convex, 
  the 
  outer 
  side 
  

   straight, 
  the 
  posterior 
  side 
  bilobed, 
  fitting 
  into 
  the 
  lobes 
  of 
  the 
  head. 
  

   Outer 
  antennse 
  reaching 
  to 
  the 
  middle 
  of 
  the 
  third 
  thoracic 
  segment. 
  

   Last 
  segment 
  of 
  the 
  tail 
  triangular, 
  bidentate 
  at 
  the 
  tip. 
  Outer 
  ramus 
  of 
  

  

  