﻿384 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.96 
  

  

  lower 
  jaw 
  rounded; 
  gill 
  membranes 
  somewhat 
  broadly 
  attached 
  across 
  

   isthmus. 
  

  

  The 
  following 
  collections 
  were 
  studied 
  : 
  U. 
  S. 
  N. 
  M. 
  Nos. 
  45532 
  and 
  

   130878 
  from 
  Mexico; 
  Nos. 
  78887-9 
  from 
  Panama; 
  and 
  No. 
  19915 
  from 
  

   Central 
  America. 
  

  

  Genus 
  RHINOMUGIL 
  Gill 
  

  

  Rhinomvgil 
  Gill, 
  Proc. 
  Acad. 
  Nat. 
  Sci. 
  Philadelphia, 
  1863, 
  p. 
  169 
  (genotype, 
  

   Mugil 
  cors7ila 
  Hamilton-Buchanan) 
  (rivers 
  Ganges 
  and 
  Bengal). 
  

  

  Squalomugil 
  Ogilbt, 
  Ann. 
  Queensland 
  Mus., 
  pt. 
  1, 
  pp. 
  3, 
  28, 
  1908 
  (genotype, 
  

   Mugil 
  nasuius 
  de 
  Vis) 
  (coast 
  of 
  Queensland) 
  . 
  

  

  This 
  genus 
  is 
  characterized 
  by 
  the 
  thin 
  lower 
  lips, 
  du*ected 
  horizon- 
  

   tally 
  forward, 
  not 
  curved 
  downward, 
  and 
  supplied 
  with 
  ciliform 
  teeth 
  

   embedded 
  in 
  the 
  lip; 
  upper 
  lip 
  with 
  setiform 
  teeth; 
  tips 
  of 
  all 
  teeth 
  

   simple; 
  tip 
  of 
  lower 
  jaw 
  with 
  a 
  symphyseal 
  knob; 
  scales 
  ctenoid; 
  

   front 
  edge 
  of 
  preorbital 
  nearly 
  straight, 
  v/ithout 
  a 
  conspicuous 
  con- 
  

   cavity 
  and 
  with 
  but 
  a 
  few 
  serrations; 
  maxillary 
  and 
  premaxillary 
  

   not 
  strongly 
  bent 
  downward 
  posteriorly 
  but 
  in 
  line 
  with 
  front 
  edge 
  

   of 
  preorbital; 
  the 
  nostrils 
  are 
  in 
  line 
  with 
  the 
  lower 
  edge 
  of 
  the 
  orbit, 
  

   widely 
  separated, 
  and 
  remote 
  from 
  tip 
  of 
  snout; 
  adipose 
  eyelid 
  absent; 
  

   vomer, 
  palatines, 
  and 
  tongue 
  probably 
  toothless; 
  posterior 
  end 
  of 
  

   preorbital 
  very 
  narrow, 
  ending 
  in 
  two 
  or 
  three 
  spines; 
  margin 
  of 
  lower 
  

   jaw 
  angular; 
  gill 
  membranes 
  extending 
  far 
  forward, 
  not 
  joined 
  across 
  

   isthmus. 
  

  

  The 
  diagnosis 
  is 
  based 
  mostly 
  on 
  plate 
  9, 
  figure 
  97, 
  of 
  Hamilton- 
  

   Buchanan, 
  and 
  on 
  Hora, 
  Journ. 
  Bombay 
  Nat. 
  Hist. 
  Soc, 
  vol. 
  40, 
  

   No. 
  1, 
  pp. 
  62-68, 
  pi. 
  and 
  3 
  text 
  figs, 
  of 
  Mugil 
  corsula, 
  1938; 
  also 
  on 
  

   Whitley's 
  (Australian 
  Zool., 
  vol. 
  10, 
  No. 
  1, 
  p. 
  22, 
  fig. 
  16, 
  1941) 
  account 
  

   and 
  description 
  of 
  Mugil 
  nasutus, 
  along 
  with 
  one 
  specimen 
  of 
  R. 
  

   corsula, 
  U. 
  S. 
  N. 
  M. 
  No. 
  44767 
  from 
  Kangoon. 
  

  

  Genus 
  AGONOSTOMUS 
  Bennett 
  

  

  Agonoslomus 
  Bennett, 
  Proc. 
  Comm. 
  Sci. 
  Corresp. 
  Zool. 
  Soc. 
  London, 
  No. 
  14, 
  

  

  p. 
  166, 
  1832 
  (genotype, 
  Agonostomus 
  telfairii 
  Bennett) 
  (Mauritius). 
  

   Nesiis 
  Valenciennes, 
  in 
  Cuvier 
  and 
  Valenciennes, 
  Histoire 
  na^turelle 
  des 
  poissons, 
  

  

  vol. 
  11, 
  p. 
  167, 
  pi. 
  317, 
  1836 
  (genotype, 
  Nestis 
  cyprinoides 
  Valenciennes) 
  

  

  (lie 
  de 
  France 
  ; 
  Bourbon) 
  . 
  

   Dajaus 
  Valenciennes, 
  in 
  Cuvier 
  and 
  Valenciennes, 
  ibid., 
  p. 
  164, 
  pi. 
  316 
  (geno- 
  

  

  tj'pe, 
  Dajaus 
  monticola 
  Valenciennes 
  =Mi<5ft7 
  monticola 
  Griffith) 
  (rivers 
  of 
  

  

  Dominican 
  Republic, 
  Puerto 
  Rico, 
  and 
  Jamaica) 
  . 
  

   Neomugil 
  Vaillant, 
  Bull. 
  Soc. 
  Philom. 
  Paris, 
  ser. 
  3, 
  vol. 
  6, 
  p. 
  72,1894 
  (genotype, 
  

  

  Mugil 
  digued 
  Vaillant 
  ==MMgrz7 
  monticola 
  Griffith) 
  (Lower 
  California). 
  

  

  Agonostomus 
  hryanti 
  Bean 
  and 
  Weed 
  (U. 
  S. 
  N. 
  M. 
  No. 
  72582) 
  be- 
  

   longs 
  to 
  the 
  Eleotridae, 
  and 
  probably 
  in 
  the 
  genus 
  Hypseleotris 
  Gill. 
  

   It 
  is 
  not 
  a 
  mullet. 
  

  

  This 
  genus 
  is 
  characterized 
  by 
  the 
  thick 
  lips 
  in 
  both 
  jaws 
  and 
  by 
  a 
  

   wide 
  band 
  of 
  small 
  teeth 
  in 
  both 
  jaws; 
  the 
  outer 
  rows 
  of 
  the 
  upper 
  

  

  