﻿PROCEEDINGS 
  OF 
  THE 
  UNITED 
  STATES 
  NATIONAL 
  MUSEUM 
  

  

  issued 
  ft'-t^iVvA- 
  sii»JB 
  h 
  the 
  

  

  SMITHSONIAN 
  INSTITimON 
  

  

  U. 
  S. 
  NATIONAL 
  MUSEUM 
  

  

  Vol. 
  % 
  Wwhington: 
  1945 
  No. 
  3191 
  

  

  A 
  M:\V 
  (iENUS 
  AND 
  TWO 
  NEW 
  SPECIES 
  OF 
  PEKCOID 
  

   FISHES 
  FROM 
  XEW 
  GUINEA, 
  FAMILY 
  CENTROPOMIDAE 
  

  

  Hv 
  Lion 
  Aiv'i) 
  P. 
  Schultz 
  

  

  Lt. 
  Jmiik's 
  R. 
  Simon, 
  U.S.N.R., 
  irccntly 
  donated 
  to 
  tho 
  Unitod 
  States 
  

   National 
  Museum 
  a 
  small 
  collection 
  of 
  lishes 
  jtriven 
  to 
  him 
  hy 
  his 
  friend 
  

   Capt. 
  Rail)]) 
  F. 
  Honess, 
  U.S.A.. 
  who 
  collected 
  them 
  in 
  New 
  Guinea 
  

   in 
  1044. 
  In 
  this 
  lot. 
  lotalin*; 
  '27 
  s])ecimens, 
  ^Yere 
  eijiht 
  examples 
  from 
  

   fresh 
  water 
  that 
  I 
  consider 
  to 
  helonj; 
  to 
  an 
  undcscribed 
  pei-coid 
  <;enus 
  

   invoh 
  in<_' 
  two 
  new 
  species. 
  These 
  are 
  described 
  herein. 
  The 
  other 
  19 
  

   .sp»'cinicn< 
  arc 
  of 
  known 
  foiins 
  oc('nn'in;Lr 
  in 
  the 
  re<ri<>ii. 
  

  

  XENAMBASSIS, 
  new 
  genus 
  

  

  Geiwtypi 
  . 
  — 
  Xr)u//)iha.y.s/',<< 
  lifrytpss'/. 
  new 
  species. 
  

  

  Body 
  ronij)ressed. 
  covered 
  with 
  cveioid 
  scales 
  of 
  moderate 
  si/e 
  every- 
  

   where 
  except 
  on 
  top 
  of 
  head: 
  basal 
  half 
  of 
  caudal 
  fin 
  scaled 
  and 
  a 
  few 
  

   -cales 
  on 
  base 
  of 
  peel 
  oi'al 
  : 
  lateral 
  line 
  arched 
  ^\\^'\• 
  j)e<'loral 
  fin 
  so 
  that 
  

   It 
  is 
  concurrent 
  with 
  doisal 
  pi'ofile. 
  then 
  extendin;:; 
  alon^ 
  midaxis 
  of 
  

   body 
  posteriorly; 
  each 
  lateral 
  line 
  tube 
  straiefht. 
  not 
  extendine; 
  entire 
  

   len^jth 
  of 
  scale 
  ; 
  anterior 
  profile 
  concave 
  ovci- 
  orbits 
  : 
  intei-orbital 
  space 
  

   a 
  little 
  convex; 
  a 
  low 
  predorsal 
  ridejc 
  exteiidinir 
  alon^r 
  middorsal 
  line 
  

   endin«r 
  at 
  occiput: 
  mouth 
  teiminal. 
  a 
  little 
  obruiue; 
  premaxillary 
  

   diLditly 
  [irotractile 
  : 
  maxillaiy 
  withoiil 
  supplemental 
  bone, 
  mostly 
  t'X- 
  

   posed, 
  o(dy 
  the 
  doj-sal 
  edp- 
  slipi)in;j: 
  sli^dit 
  ly 
  mulei- 
  ed<fe 
  of 
  preorbital 
  

   bone; 
  maxillaiy 
  with 
  its 
  {posterior 
  ed^'e 
  conca\e: 
  jaws 
  e(|ual 
  or 
  nearly 
  

   -CI. 
  the 
  lower 
  sli^htlv 
  in 
  front 
  id' 
  upper: 
  iccth 
  in 
  both 
  jaws 
  in 
  a 
  \illi- 
  

   t'orm 
  band, 
  with 
  the 
  out«*r 
  row 
  consisting; 
  of 
  somewhat 
  e;darjie(l 
  conical 
  

   teeth, 
  the 
  band 
  of 
  teeth 
  becoming' 
  narrower 
  on 
  sides 
  of 
  jaw. 
  endinjj 
  

   in 
  onlv 
  one 
  or 
  t 
  wo 
  rows 
  on 
  lower 
  jaw 
  : 
  vomer 
  with 
  a 
  patch 
  of 
  villi 
  form 
  

   teeth 
  and 
  palatines 
  with 
  a 
  nairow 
  row 
  of 
  \ 
  illifoini 
  teeth 
  : 
  no 
  teeth 
  on 
  

  

  620241— 
  4.^ 
  11'' 
  

  

  