﻿262 
  Transactions. 
  — 
  Zoology. 
  

  

  Tliis 
  species 
  is 
  very 
  distinct 
  in 
  general 
  shape 
  from 
  any. 
  European 
  form, 
  

   which 
  are 
  all 
  more 
  or 
  less 
  acutely 
  produced 
  inferiorly, 
  and 
  it 
  also 
  has 
  the 
  

   antennae 
  very 
  much 
  shorter 
  than 
  is 
  usual 
  in 
  the 
  genus. 
  

  

  Fam. 
  II. 
  Lynceid^e. 
  

   Superior 
  antennjE 
  very 
  short 
  ; 
  inferior 
  of 
  moderate 
  size, 
  branched, 
  each 
  

   branch 
  three-jointed; 
  legs 
  five 
  pairs; 
  eye 
  single, 
  with 
  a 
  black 
  spot 
  in 
  front; 
  

   intestine 
  convoluted, 
  having 
  one 
  complete 
  turn 
  and 
  a 
  half. 
  

  

  Genus 
  I. 
  Chydorus, 
  Leach. 
  

   Nearly 
  spherical 
  in 
  shape; 
  beak 
  very 
  long 
  and 
  sharp, 
  curved 
  downwai'ds 
  ; 
  

   inferior 
  antenna 
  very 
  short. 
  

  

  1. 
  Chydorus 
  minutus, 
  nov. 
  sp. 
  Pig. 
  E.3 
  a. 
  

  

  Carapace 
  broadly 
  oblong 
  in 
  you.ng 
  specimens, 
  becoming 
  more 
  spherical 
  

   in 
  adults, 
  dorsally 
  rounded 
  ; 
  antero-inferior 
  margin 
  oblique, 
  fringed 
  with 
  

   rather 
  long 
  cilia. 
  Beak 
  long, 
  very 
  acute. 
  Eye 
  rather 
  small 
  ; 
  eye-spot 
  not 
  

   half 
  as 
  large. 
  Superior 
  antenna 
  very 
  small, 
  blunt, 
  with 
  a 
  few 
  very 
  delicate 
  

   setae. 
  Inferior 
  antenriEe 
  short 
  ; 
  lower 
  branch 
  with 
  two 
  setse 
  from 
  extremity 
  

   of 
  last 
  joint; 
  u|)per 
  branch 
  with 
  one 
  seta 
  from 
  the 
  penultimate 
  joint, 
  and 
  

   three 
  from 
  the 
  last 
  joint. 
  Abdomen 
  strongly 
  serrated 
  on 
  the 
  inferior 
  

   margin, 
  with 
  the 
  terminal 
  claws 
  short 
  and 
  curved. 
  The 
  postero-dorsal 
  

   border 
  of 
  the 
  abdomen 
  furnished 
  with 
  two 
  filaments. 
  Length 
  about 
  ^\ 
  of 
  

   an 
  inch. 
  

  

  Very 
  common 
  in 
  ditches, 
  ponds 
  &c., 
  near 
  Dunedin, 
  from 
  October 
  to 
  May. 
  

  

  In 
  the 
  larger 
  specimen 
  figured, 
  a 
  solitary 
  young 
  one 
  was 
  inside 
  the 
  

   carapace 
  of 
  the 
  parent. 
  This 
  was 
  well-developed, 
  having 
  the 
  eye 
  and 
  eye- 
  

   spot 
  prominent, 
  and 
  apparently 
  all 
  the 
  limbs 
  perfect. 
  

  

  Bibliography. 
  

   Baird's 
  British 
  Entomostraca. 
  Micrographie 
  Dictionary. 
  G. 
  S. 
  Brady 
  

   on 
  Ostracoda, 
  Zool. 
  Soc. 
  Proc, 
  1871; 
  Zool. 
  Soc. 
  Trans., 
  Vol. 
  V., 
  p. 
  359; 
  

   and 
  Linn. 
  Soc. 
  Trans. 
  XXVI.. 
  Dr. 
  Baird 
  (Apodida), 
  Zool. 
  Soc. 
  Proc, 
  

   1850-52 
  and 
  1866. 
  Sir 
  John 
  Lubbock, 
  Linn. 
  Soc. 
  Trans., 
  Vol. 
  XXIIL, 
  

   1860. 
  

  

  DESCEIPTION 
  OF 
  PLATE 
  XI. 
  

  

  (The 
  small 
  numbers 
  represent 
  the 
  linear 
  magnifying 
  power.* 
  ) 
  

  

  Fig. 
  A. 
  1. 
  Cypris 
  ciliata 
  : 
  (a) 
  superior 
  antennse 
  ; 
  (b) 
  inferior 
  antennse 
  ; 
  (c) 
  portion 
  of 
  

   mandible 
  ; 
  (d) 
  first 
  pair 
  of 
  feet 
  ; 
  (e) 
  second 
  pair 
  of 
  feet 
  ; 
  (/) 
  post-abdominal 
  

   ramus 
  ; 
  (g) 
  portion 
  of 
  valve. 
  

  

  2. 
  Cypris 
  viridis 
  : 
  (a) 
  superior 
  antenna3 
  : 
  [b) 
  inferior 
  antenna 
  ; 
  (c) 
  portion 
  of 
  

  

  mandible 
  ; 
  (d) 
  first 
  pair 
  of 
  feet 
  ; 
  (e) 
  second 
  pair 
  of 
  feet 
  ; 
  (/) 
  post-abdominal 
  

   ramus 
  ; 
  {g) 
  portion 
  of 
  valve. 
  

  

  3. 
  Cypris 
  littoralis 
  : 
  (a) 
  mucus-gland 
  (of 
  Brady) 
  ; 
  {b) 
  post-abdominal 
  ramus. 
  

  

  * 
  These 
  numbers 
  sbould 
  be 
  reduced 
  by 
  one-lialf, 
  as 
  the 
  original 
  plates 
  have 
  been 
  reduced 
  to 
  

   that 
  extent.— 
  En. 
  

  

  