﻿REVISION 
  OF 
  THE 
  GENERA 
  OF 
  MULLETS 
  — 
  SCHULTZ 
  387 
  

  

  teiior 
  edge 
  of 
  preorbital 
  rather 
  narrow, 
  serrated; 
  margin 
  of 
  lower 
  jaw 
  

   acutely 
  angular; 
  gill 
  mtunbrancs 
  extending 
  far 
  forward 
  not 
  broadly 
  

   connected 
  across 
  thi; 
  istiunus. 
  

  

  ^». 
  I 
  have 
  examined 
  the 
  following 
  collections, 
  all 
  taken 
  from 
  the 
  

   Galdpagos 
  Islands: 
  U. 
  S. 
  N. 
  M. 
  Nos. 
  41881, 
  41459, 
  50017, 
  05597, 
  

   8974S. 
  The 
  two 
  types 
  bear 
  U. 
  S. 
  N. 
  M. 
  No. 
  4757G. 
  

  

  This 
  new 
  genus 
  may 
  be 
  distinguished 
  from 
  all 
  other 
  genera 
  in 
  the 
  

   family 
  Mugilidae 
  by 
  the 
  key 
  on 
  pages 
  379 
  to 
  381. 
  

  

  Named 
  Xenoniugil 
  in 
  reference 
  to 
  the 
  "strange" 
  teeth 
  and 
  lips. 
  

  

  CRENIMUGIL. 
  new 
  genus 
  

  

  Genotype. 
  — 
  Mugil 
  crenilabis 
  F6rskal. 
  

  

  Under 
  Chelon, 
  Oshima 
  (Ann. 
  Carnegie 
  Mas., 
  vol. 
  13, 
  p. 
  257, 
  pi. 
  

   13, 
  fig. 
  1, 
  1922) 
  lists 
  a 
  single 
  species, 
  ''Chelon 
  crenilabis 
  (Foi^kal)," 
  

   from 
  the 
  Pescadores 
  Islands, 
  west 
  of 
  Formosa, 
  but 
  since 
  this 
  species 
  

   belongs 
  in 
  a 
  genus 
  distinct 
  from 
  Chelan. 
  Rose, 
  with 
  Mugil 
  chela 
  as 
  

   the 
  tvpe, 
  it 
  appeai-s 
  necessary 
  to 
  propose 
  a 
  new 
  generic 
  name 
  for 
  this 
  

   type 
  of 
  mullet. 
  It 
  is 
  diagnosed 
  below. 
  

  

  This 
  genus 
  is 
  characterized 
  by 
  the 
  thick 
  lips 
  bearing 
  papillae 
  ex- 
  

   ternally 
  and 
  internally; 
  those 
  forming 
  the 
  row 
  along 
  the 
  external 
  

   edge 
  of 
  the 
  Hps 
  are 
  crenulate, 
  becoming 
  more 
  so 
  in 
  the 
  adults 
  and 
  

   even 
  continuous 
  around 
  the 
  corners 
  of 
  the 
  mouth; 
  the 
  thick 
  lower 
  

   lip 
  is 
  somewhat 
  folded 
  outward; 
  the 
  papillae 
  apparently 
  represent 
  

   "teeth"; 
  inside 
  of 
  upper 
  jaw 
  near 
  front 
  of 
  mouth 
  are 
  plicate 
  fleshy 
  

   folds: 
  symphyseal 
  knob 
  at 
  tip 
  of 
  lower 
  jaw; 
  scales 
  cycloid; 
  front 
  edge 
  

   of 
  preorbital 
  with 
  concave 
  notch 
  to 
  receive 
  corner 
  of 
  mouth; 
  maxillary 
  

   and 
  premaxillary 
  moderately 
  bent 
  downward, 
  but 
  the 
  maxillary 
  not 
  

   e.xpo.sed 
  as 
  in 
  Chelan; 
  nostrils 
  on 
  level 
  of 
  upper 
  edge 
  of 
  orbit, 
  moder- 
  

   ately 
  separated, 
  so 
  that 
  the 
  anterior 
  nostril 
  is 
  as 
  close 
  to 
  groove 
  

   behind 
  upper 
  lip 
  as 
  to 
  posterior 
  nostril, 
  the 
  anterior 
  nostril 
  being 
  

   rather 
  close 
  to 
  the 
  groove; 
  no 
  adipose 
  eyelid; 
  no 
  teeth 
  on 
  vomer 
  but 
  

   teeth 
  on 
  palatines 
  and 
  a 
  few 
  on 
  tongue; 
  posterior 
  edge 
  of 
  preorbital 
  

   very 
  wide, 
  wider 
  than 
  space 
  between 
  nostrils; 
  margin 
  of 
  lower 
  jaw 
  

   broadly 
  angular; 
  gill 
  nu'inbranes 
  extending 
  far 
  forward, 
  not 
  broadly 
  

   comiccted 
  across 
  the 
  isthmus. 
  

  

  I 
  have 
  examined 
  the 
  following 
  collections 
  bearing 
  U. 
  S. 
  N. 
  M. 
  

   numbers: 
  Indian 
  Ocean, 
  Xos. 
  44522 
  and 
  44557; 
  Christmas 
  Island, 
  

   No. 
  19218; 
  Phoenix 
  Islands, 
  Nos. 
  115040-2; 
  Samoan 
  Islands, 
  No. 
  

   115039; 
  Tahiti, 
  No. 
  87049; 
  Marshall 
  Islands, 
  No. 
  65912; 
  Ciuara, 
  No. 
  

   05913. 
  

  

  This 
  ncnv 
  genus 
  may 
  b(^ 
  distinguished 
  from 
  all 
  olher 
  l'-mm 
  ra 
  in 
  tlic 
  

   family 
  Mugilidae 
  by 
  the 
  key 
  on 
  pages 
  379 
  to 
  381. 
  

  

  Named 
  Crenimugil 
  in 
  reference 
  t/> 
  the 
  crenul'ite 
  lips. 
  

  

  