﻿SIX 
  SUBFAMILIES 
  OF 
  ATHERINIDAE 
  — 
  SCHULTZ 
  27 
  

  

  origin, 
  whereas 
  in 
  other 
  genera 
  it 
  reaches 
  a 
  little 
  past 
  the 
  anal 
  origin. 
  

  

  Myers 
  and 
  Wade 
  (Allan 
  Hancock 
  Pacific 
  Exped., 
  vol. 
  9, 
  No. 
  5, 
  p. 
  

   140, 
  1942) 
  erected 
  a 
  new 
  monotypic 
  subfamily, 
  Melanorhininae, 
  for 
  

   the 
  Central 
  American 
  genus 
  Melanorhiniis, 
  but 
  the 
  genus 
  is 
  an 
  aber- 
  

   rant 
  and 
  highly 
  specialized 
  one, 
  probably 
  adapted 
  for 
  living 
  in 
  the 
  

   surf. 
  

  

  In 
  certain 
  respects, 
  such 
  as 
  the 
  truncated 
  head, 
  air 
  bladder 
  ending 
  

   bluntly, 
  compressed 
  body, 
  and 
  pectorals 
  placed 
  high 
  on 
  the 
  body, 
  

   Melanorhinus 
  resembles 
  the 
  Tropidostethinae 
  but 
  differs 
  from 
  that 
  

   subfamily 
  in 
  not 
  having 
  the 
  premaxillaries 
  expanded 
  posteriorly, 
  mid- 
  

   ventral 
  line 
  of 
  abdomen 
  without 
  a 
  thin 
  paperlike 
  fleshy 
  keel, 
  head 
  

   without 
  denticles, 
  among 
  other 
  characters. 
  The 
  absence 
  of 
  a 
  silvery 
  

   lateral 
  band 
  in 
  Melanorhinus 
  probably 
  is 
  not 
  of 
  much 
  value 
  in 
  guessing 
  

   relationships. 
  Since 
  the 
  air 
  bladder 
  ends 
  bluntly 
  and 
  the 
  hypophyses 
  

   are 
  unmodified 
  on 
  the 
  anterior 
  caudal 
  vertebrae 
  of 
  Melanorhinus, 
  this 
  

   genus 
  is 
  referred 
  to 
  the 
  subfamily 
  Menidiinae, 
  which 
  likewise 
  have 
  un- 
  

   modified 
  vertebrae. 
  

  

  Genus 
  MELANORHINUS 
  Metzelaar 
  

  

  Melanorhinus 
  Mettzelaar, 
  Report 
  on 
  the 
  fishes 
  collected 
  by 
  Dr. 
  J. 
  Boeke 
  in 
  the 
  

   Dutch 
  West 
  Indies 
  1904-05 
  . 
  . 
  ., 
  p. 
  38, 
  fig. 
  14, 
  1919 
  (genotype: 
  Melanorhinus 
  

   boekei 
  Metzelaar) 
  . 
  

  

  Mugilops 
  Meek 
  and 
  Hildebrand, 
  The 
  marine 
  fishes 
  of 
  Panama, 
  pt. 
  1, 
  p. 
  271, 
  pi. 
  22, 
  

   fig. 
  1, 
  1923 
  (genotype: 
  Mugilops 
  cyanellus 
  Meek 
  and 
  Hildebrand). 
  

  

  Myers 
  and 
  Wade 
  (Allan 
  Hancock 
  Pacific 
  Exped., 
  vol. 
  9, 
  No. 
  5, 
  pp. 
  

   139-141, 
  1942) 
  were 
  the 
  first 
  to 
  point 
  out 
  that 
  Mugilops 
  is 
  a 
  synonym 
  

   of 
  Melanorhinus. 
  Mugilops 
  marinus 
  Meek 
  and 
  Hildebrand 
  of 
  the 
  

   Atlantic 
  is 
  undoubtedly 
  a 
  sjaionym 
  of 
  M. 
  hoekei 
  Metzelaar, 
  as 
  indicated 
  

   by 
  Myers 
  and 
  Wade. 
  The 
  Pacific 
  representative 
  of 
  this 
  genus 
  is 
  M. 
  

   cyanellus 
  Meek 
  and 
  Hildebrand. 
  

  

  The 
  generic 
  diagnosis 
  was 
  based 
  on 
  the 
  holotypes 
  of 
  both 
  Mugilops 
  

   cyanellus, 
  U. 
  S. 
  N. 
  M. 
  No. 
  81748, 
  and 
  on 
  Mugilops 
  marinu^s, 
  U. 
  S, 
  N. 
  M. 
  

   No. 
  81742; 
  on 
  two 
  paratypes 
  of 
  M. 
  cyanellus, 
  U. 
  S. 
  N. 
  M. 
  Nos 
  79720 
  

   and 
  79721 
  ; 
  four 
  specimens 
  from 
  Panama 
  Bay, 
  U. 
  S. 
  N. 
  M. 
  No. 
  128570, 
  

   and 
  on 
  U. 
  S. 
  N. 
  M. 
  No. 
  9432. 
  

  

  Carl 
  L. 
  Hubbs 
  and 
  Luis 
  R. 
  Rivas 
  have 
  redescribed 
  Melanorhinus 
  

   microps 
  (Poey) 
  in 
  a 
  paper 
  entitled 
  "Systematics 
  of 
  an 
  American 
  

   Atherine 
  Fish, 
  Melanorhinus 
  microps 
  (Poey)," 
  Journ. 
  Washington 
  

   Acad. 
  Sci., 
  vol. 
  36, 
  No. 
  11, 
  pp. 
  393-396, 
  1946. 
  This 
  publication 
  was 
  

   based 
  on 
  U. 
  S. 
  N. 
  M. 
  No. 
  9432, 
  28 
  specimens 
  from 
  Cuba. 
  

  

  Genus 
  ARCHOMENIDIA 
  Jordan 
  and 
  Hubbs 
  

  

  Archomenidia 
  Jordan 
  and 
  Hubbs, 
  A 
  monographic 
  review 
  of 
  the 
  family 
  of 
  Atherini- 
  

   dae 
  or 
  silversides, 
  p. 
  54, 
  1919 
  (genotype: 
  Atherinichthys 
  sallei 
  Regan). 
  

  

  The 
  generic 
  diagnosis 
  given 
  in 
  the 
  key 
  was 
  based 
  on 
  three 
  specimens 
  

  

  