﻿162 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  vol.44. 
  

  

  between 
  Gillolo 
  and 
  Kayoa 
  Islands, 
  Dutch 
  East 
  Indies, 
  at 
  a 
  depth 
  of 
  

   230 
  fathoms, 
  on 
  a 
  bottom 
  of 
  gray 
  mud 
  and 
  fme 
  sand. 
  

  

  With 
  the 
  exception 
  of 
  one 
  specimen, 
  which 
  came 
  from 
  Palawan 
  

   Passage, 
  all 
  of 
  our 
  examples 
  were 
  taken 
  in 
  the 
  region 
  of 
  Gillolo 
  Island. 
  

   All 
  of 
  our 
  examples 
  of 
  0. 
  argenteum 
  are 
  from 
  the 
  interisland 
  waters 
  

   of 
  the 
  Philippine 
  Archipelago, 
  and 
  are 
  readily 
  separable 
  from 
  this 
  

   species, 
  having, 
  a 
  much 
  darker 
  coloration, 
  smaller 
  eye, 
  the 
  friU-like 
  

   bony 
  crests 
  of 
  the 
  head 
  less 
  firm, 
  and 
  the 
  ventrals 
  shorter. 
  

  

  GLYPTOPHIDIUM 
  OCEANIUM 
  Smith 
  and 
  Radcliffe, 
  new 
  species. 
  

   Plate 
  12, 
  fig. 
  4. 
  

  

  Dorsal 
  128; 
  caudal 
  9; 
  anal 
  90; 
  ventrals 
  2; 
  pectorals 
  23. 
  

  

  Head 
  4.81 
  (5 
  in 
  total 
  length), 
  rather 
  more 
  pointed 
  and 
  depressed 
  

   than 
  in 
  related 
  species, 
  crests 
  firmer; 
  body 
  slender, 
  compressed, 
  

   tapering 
  into 
  a 
  slender 
  tail; 
  greatest 
  depth 
  5.94 
  (6.18 
  in 
  total 
  length) 
  ; 
  

   eye 
  3.23, 
  large, 
  broadly 
  elliptical-oval; 
  orbital 
  rims 
  expanded, 
  

   scarcely 
  as 
  prominent 
  as 
  in 
  lucidum; 
  snout 
  3.65 
  in 
  head, 
  1.13 
  in 
  eye, 
  

   equal 
  to 
  interorbital, 
  rather 
  blunt, 
  median 
  dorsal 
  ridge 
  distinct; 
  

   mouth 
  large, 
  oblique, 
  upper 
  jaw 
  overlapping 
  lower, 
  except 
  at 
  tip, 
  

   where 
  the 
  knob 
  at 
  tip 
  of 
  mandibular 
  symphysis 
  projects 
  slightly; 
  

   maxillary 
  1.79, 
  scarcely 
  reaching 
  vertical 
  from 
  posterior 
  margin 
  of 
  

   eye, 
  slipping 
  under 
  expanded 
  suborbital; 
  bands 
  of 
  small 
  villiform 
  

   teeth 
  on 
  jaws, 
  vomer 
  and 
  palatines; 
  interorbital 
  flattened, 
  slightly 
  

   concave 
  in 
  the 
  alcohoHc 
  examples; 
  nostrils 
  widely 
  separated, 
  anterior 
  

   on 
  anterior 
  margin 
  of 
  snout, 
  posterior 
  close 
  to 
  eye; 
  opercular 
  spine 
  

   slender, 
  slightly 
  stronger 
  than 
  in 
  examples 
  of 
  lucidum, 
  a 
  weak 
  incision 
  

   above 
  angle 
  of 
  preopercle; 
  pseudobranchiae 
  represented 
  by 
  12 
  to 
  14 
  

   short 
  filaments; 
  gill-filaments 
  short; 
  gill-rakers 
  long 
  and 
  slender, 
  

   9-1-27, 
  the 
  longest 
  one-half 
  diameter 
  of 
  eye; 
  about 
  8 
  slender 
  append- 
  

   ages 
  around 
  pylorus, 
  better 
  developed 
  than 
  in 
  lucidum; 
  scales 
  small, 
  

   cycloid, 
  deciduous; 
  lateral 
  line 
  mdistinguishable. 
  

  

  Dorsal 
  and 
  anal 
  continuous 
  with 
  the 
  caudal; 
  the 
  dorsal 
  more 
  

   anterior 
  in 
  its 
  insertion 
  than 
  in 
  lucidum., 
  its 
  distance 
  from 
  tip 
  of 
  snout 
  

   5.46 
  (5.68 
  in 
  total 
  length); 
  anal 
  rays 
  much 
  shorter 
  than 
  those 
  of 
  

   dorsal; 
  distance 
  of 
  anal 
  from 
  tip 
  of 
  snout 
  2.52 
  (2,62 
  in 
  total 
  length); 
  

   ventrals 
  consisting 
  of 
  2 
  slender 
  rays 
  divided 
  nearly 
  to 
  base, 
  inner 
  ray 
  

   longest, 
  2.20 
  in 
  head, 
  bases 
  close 
  together 
  in 
  vertical 
  fi'om 
  origin 
  of 
  

   dorsal; 
  pectoral 
  1.62. 
  

  

  Color 
  in 
  alcohol: 
  Body 
  raw 
  sienna, 
  darkest 
  dorsally 
  ; 
  head 
  and 
  belly 
  

   somewhat 
  lighter 
  with 
  silvery 
  reflections; 
  fins 
  grayish, 
  rays 
  punctu- 
  

   late 
  with 
  darker, 
  especially 
  the 
  distal 
  portion 
  of 
  anterior 
  dorsal 
  rays; 
  

   gill-rakers 
  and 
  lining 
  of 
  gill-chamber 
  adjacent 
  to 
  gills 
  seal-brown; 
  on 
  

   gill-chamber 
  this 
  is 
  margined 
  with 
  silvery; 
  peritoneum 
  seal-brown; 
  

   stomach 
  and 
  intestine 
  dark 
  clove-brown. 
  

  

  