﻿298 
  Transactions. 
  — 
  Zoology. 
  

  

  upper 
  portion 
  of 
  body 
  and 
  tail 
  ; 
  cleft 
  of 
  mouth 
  very 
  oblique. 
  A 
  single 
  

   dorsal, 
  which, 
  like 
  the 
  anal, 
  is 
  composed 
  of 
  stout 
  spinou.s 
  rays 
  connected 
  at 
  

   their 
  mid-length 
  by 
  a 
  membrane 
  having 
  a 
  breadth 
  of 
  one-third 
  of 
  their 
  

   length, 
  leaving 
  apertures 
  between 
  the 
  base 
  of 
  the 
  rays. 
  Caudal 
  forked, 
  

   ventrals 
  slender 
  ; 
  a 
  single 
  series 
  of 
  minute 
  teeth 
  in 
  the 
  jaws, 
  finely 
  

   pectinate 
  ; 
  branchiostegals 
  four 
  ; 
  air-bladder 
  large. 
  

  

  Discus 
  aureus, 
  sp. 
  nov. 
  

   B.4, 
  D.26, 
  A.21, 
  V.7, 
  C.3/16/3, 
  P.17. 
  

   The 
  greatest 
  height 
  of 
  body 
  is 
  two-thirds 
  of 
  length, 
  and 
  is 
  vertical 
  to 
  the 
  

   origin 
  of 
  the 
  dorsal 
  and 
  ventrals 
  ; 
  head 
  equal 
  to 
  half 
  height 
  ; 
  snout 
  equal 
  to 
  

  

  half, 
  and 
  interorbital 
  space 
  equal 
  to 
  one 
  quarter 
  

   greatest 
  diameter 
  of 
  orbit, 
  which 
  is 
  equal 
  to 
  

   half 
  length 
  of 
  head 
  ; 
  a 
  depression 
  extends 
  down 
  

   the 
  snout; 
  greatest 
  thickness 
  of 
  body 
  above 
  

   the 
  pectorals, 
  and 
  equal 
  to 
  greatest 
  diameter 
  

   of 
  orbit 
  ; 
  the 
  upper 
  maxillary 
  extends 
  to 
  the 
  

   vertical, 
  below 
  the 
  centre 
  of 
  the 
  eye 
  ; 
  colour 
  

   silvery, 
  with 
  minute 
  bronze 
  spots, 
  with 
  a 
  dorsal 
  margin 
  of 
  a 
  similar 
  

   colour, 
  extending 
  from 
  behind 
  the 
  orbit, 
  where 
  the 
  depth 
  equals 
  half 
  

   orbit, 
  to 
  the 
  caudal 
  ; 
  pectorals 
  yellowish 
  brown, 
  others 
  dirty 
  white. 
  

   Total 
  length, 
  2fin. 
  

   Four 
  specimens 
  cast 
  up 
  on 
  Holdtika 
  beach. 
  

  

  Art. 
  XXVIII. 
  — 
  Notes 
  on 
  the 
  Genus 
  Callorhynchus, 
  loitli 
  a 
  BescrijMon 
  of 
  an 
  

   unclescribed 
  New 
  Zealand 
  Species. 
  By 
  W. 
  Colenso, 
  F.L.S. 
  

  

  Plate 
  XVII. 
  

   [Read 
  before 
  the 
  Hawhe 
  Bay 
  Philosophical 
  Institute, 
  12th 
  August, 
  1878.] 
  

   In 
  a 
  " 
  Catalogue 
  of 
  the 
  Fishes 
  of 
  New 
  Zealand 
  with 
  Diagnoses 
  of 
  the 
  

   Species," 
  compiled 
  by 
  Captain 
  Hutton 
  and 
  printed 
  for 
  the 
  Colonial 
  Museum 
  

   in 
  1872, 
  only 
  one 
  species 
  of 
  the 
  genus 
  Callorhynchus 
  is 
  mentioned 
  as 
  belong- 
  

   ing 
  to 
  our 
  seas 
  — 
  C. 
  antarcticus 
  ; 
  but, 
  as 
  I 
  take 
  it, 
  there 
  are 
  several 
  other 
  

   species, 
  two 
  of 
  which 
  I 
  have 
  seen, 
  viz., 
  C 
  australis, 
  Hobson, 
  and 
  an 
  

   undescribed 
  one, 
  which 
  I 
  believe 
  to 
  be 
  a 
  sjjecies 
  nova 
  (C, 
  dasyeaudatus, 
  

   mihi), 
  of 
  which 
  I 
  shall 
  give 
  a 
  fak 
  diagnostic 
  and 
  specific 
  outline 
  in 
  this 
  

   paper. 
  

  

  It 
  was 
  in 
  December, 
  1844, 
  that 
  I 
  first 
  saw 
  this 
  fish. 
  I 
  was 
  leaving 
  

   Poverty 
  Bay 
  in 
  a 
  brig, 
  bound 
  for 
  this 
  place, 
  when, 
  on 
  passing 
  the 
  heads, 
  

   we 
  saw 
  some 
  Maori 
  canoes 
  fishing, 
  one 
  of 
  which 
  paddled 
  alongside 
  and 
  sold 
  

   US 
  some 
  of 
  their 
  fish 
  they 
  had 
  just 
  taken 
  ; 
  among 
  them 
  was 
  one 
  that 
  I 
  had 
  

  

  