﻿2G2 
  Mr. 
  W. 
  Schaus 
  on 
  

  

  which 
  had 
  been 
  placed 
  in 
  its 
  neighbourhood 
  and 
  whose 
  

   relations 
  he 
  thought 
  had 
  been 
  misunderstood. 
  He 
  wrote 
  

   that 
  an 
  examination 
  of 
  the 
  skeletons 
  showed 
  the 
  family 
  

   Cirrhitidse 
  of 
  Gunther 
  to 
  be 
  a 
  most 
  artificial 
  group, 
  and 
  that 
  

   if 
  a 
  natural 
  arrangement, 
  were 
  to 
  be 
  attempted 
  the 
  only 
  way 
  

   to 
  deal 
  with 
  it 
  would 
  be 
  to 
  disband 
  it 
  altogether. 
  He 
  then 
  

   proposed 
  to 
  place 
  Cirrhites 
  in 
  the 
  Serranidas 
  ; 
  Chilodactylus 
  

   was 
  to 
  join 
  Ilaplodactylus 
  in 
  the 
  Sparidse, 
  and 
  a 
  distinct 
  

   family, 
  Latrididse, 
  was 
  established 
  for 
  Chironemus, 
  Threp- 
  

   terius, 
  and 
  Latris. 
  The 
  presence 
  or 
  absence 
  of 
  a 
  subocular 
  

   shelf 
  and 
  of 
  parapophyses 
  on 
  the 
  anterior 
  vertebrae 
  were 
  

   apparently 
  the 
  only 
  characters 
  taken 
  into 
  consideration 
  in 
  

   this 
  arrangement. 
  That 
  Chilodactylus 
  has 
  and 
  Ilaplo- 
  

   dactylus 
  has 
  not 
  a 
  subocular 
  shelf 
  was 
  apparently 
  overlooked, 
  

   and 
  Latris, 
  which 
  resembles 
  these 
  genera 
  and 
  differs 
  from 
  

   Chironemus 
  and 
  Threpterius 
  in 
  having 
  parapophyses 
  on 
  all 
  

   the 
  prgecaudal 
  vertobrce, 
  was 
  evidently 
  associated 
  with 
  the 
  

   latter 
  owing 
  to 
  an 
  error 
  in 
  the 
  tabular 
  statement 
  of 
  the 
  struc- 
  

   ture 
  of 
  the 
  vertebral 
  column. 
  

  

  In 
  the 
  ' 
  Cambridge 
  Natural 
  History 
  ' 
  (1904) 
  the 
  Cirrhitinse 
  

   form 
  a 
  subfamily 
  of 
  the 
  Serranidse; 
  the 
  Latrididae 
  include 
  

   only 
  Latris, 
  and 
  are 
  placed 
  next 
  to 
  the 
  Haplodactylidse, 
  

   comprising 
  Ilaplodactylus, 
  Chilodactylus, 
  Chironemus, 
  and 
  

   Threpterius 
  ; 
  parapophyses 
  are 
  said 
  to 
  be 
  developed 
  from 
  the 
  

   third 
  or 
  fourth 
  vertebra 
  and 
  a 
  subocular 
  shelf 
  to 
  be 
  absent 
  ; 
  

   neither 
  of 
  these 
  statements 
  is 
  true 
  of 
  all 
  the 
  genera. 
  

  

  The 
  presence 
  or 
  absence 
  of 
  a 
  subocular 
  shelf 
  and 
  the 
  

   development 
  of 
  parapophyses 
  have 
  some 
  taxonomic 
  import- 
  

   ance 
  ; 
  but 
  other 
  characters 
  — 
  for 
  example, 
  the 
  number 
  of 
  

   anal 
  spines 
  and 
  the 
  presence 
  or 
  absence 
  of 
  a 
  pelvic 
  axillary 
  

   process 
  — 
  are 
  equally 
  useful 
  in 
  classifying 
  the 
  Percoids. 
  

   Apparently 
  the 
  subocular 
  shelf 
  has 
  been 
  lost 
  twice 
  and 
  para- 
  

   pophyses 
  have 
  been 
  twice 
  independently 
  developed 
  on 
  the 
  

   anterior 
  prsecaudal 
  vertebrae, 
  within 
  the 
  limits 
  of 
  a 
  single 
  small 
  

   and 
  uniform 
  group, 
  the 
  Cirrhitiformes. 
  

  

  XXX. 
  — 
  New 
  Species 
  of 
  Heterocera 
  from 
  Costa 
  llica. 
  — 
  VI. 
  

   By 
  W. 
  Schaus, 
  F.Z.S. 
  

  

  Heorta 
  mitis, 
  sp. 
  n. 
  

  

  £ 
  . 
  Head 
  and 
  collar 
  lilacine 
  buff. 
  Thorax 
  pale 
  greenish 
  

   and 
  light 
  brown, 
  irrorated 
  with 
  fuscous-brown 
  scales. 
  Abdo- 
  

   men 
  above 
  fuscous 
  grey 
  ; 
  a 
  dorsal 
  tuft 
  of 
  brown 
  scales 
  at 
  

  

  