﻿146 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  vol.44. 
  

  

  broadly 
  f|-shaped; 
  interorbital 
  3.43, 
  broad, 
  flattened; 
  opercle 
  armed 
  

   with 
  a 
  single 
  strong 
  sharp 
  spine; 
  angle 
  of 
  preopercle 
  armed 
  mth 
  3 
  

   small 
  shai-p 
  spines; 
  pseudobranchiae 
  consisting 
  of 
  2 
  small 
  filaments; 
  

   gill-rakers 
  5 
  + 
  20, 
  the 
  longest 
  nearly 
  0.75 
  as 
  long 
  as 
  eye; 
  slight 
  traces 
  

   of 
  rudimentary 
  pyloric 
  coeca; 
  scales 
  small, 
  cycloid, 
  deciduous, 
  cover- 
  

   ing 
  head 
  and 
  body, 
  and 
  forming 
  a 
  low 
  sheath 
  at 
  the 
  base 
  of 
  dorsal 
  

   and 
  anal; 
  8 
  scales 
  in 
  a 
  series 
  from 
  origin 
  of 
  dorsal 
  to 
  and 
  including 
  

   lateral 
  line, 
  about 
  25 
  from 
  origin 
  of 
  anal 
  to 
  lateral 
  line; 
  lateral 
  line 
  

   broad, 
  distinct 
  anteriorly, 
  disappearing 
  at 
  about 
  a 
  head's 
  length 
  

   from 
  base 
  of 
  caudal. 
  

  

  Dorsal 
  and 
  anal 
  continuous 
  with 
  caudal; 
  distance 
  of 
  dorsal 
  from 
  

   tip 
  of 
  snout 
  4 
  (4.10 
  in 
  total 
  length) 
  ; 
  distance 
  of 
  anal 
  from 
  tip 
  of 
  snout 
  

   2.43 
  (2.66 
  in 
  total 
  length) 
  ; 
  ventrals 
  small, 
  rather 
  widely 
  separated 
  at 
  

   base, 
  each 
  consisting 
  of 
  2 
  rays 
  united 
  by 
  membrane 
  for 
  a 
  very 
  short 
  

   distance 
  at 
  base, 
  inner 
  ray 
  longest, 
  2.23 
  in 
  head, 
  ventral 
  base 
  behind 
  

   tip 
  of 
  humeral 
  symphysis; 
  upper 
  pectoral 
  rays 
  united, 
  the 
  longest 
  

   about 
  equal 
  to 
  head, 
  lower 
  rays 
  separate, 
  filamentous, 
  1.5 
  times 
  as 
  

   long 
  as 
  head, 
  base 
  of 
  lower 
  rays 
  about 
  a 
  head-length 
  in 
  advance 
  of 
  

   anal. 
  

  

  Color 
  in 
  alcohol: 
  Tawny 
  olive; 
  opercular 
  region, 
  branchiostegals, 
  

   and 
  fins 
  dark 
  clove 
  brown; 
  peritoneum 
  dark 
  chestnut 
  brown. 
  

  

  Type.— 
  C&t. 
  No. 
  74131, 
  U.S.N.M., 
  25.5 
  cm. 
  in 
  length, 
  taken 
  with 
  

   a 
  beam 
  trawl 
  at 
  station 
  5467 
  (lat. 
  13° 
  35' 
  27" 
  N.; 
  long. 
  123° 
  37' 
  18" 
  

   E.), 
  LagonojT- 
  Gulf, 
  Luzon, 
  at 
  depth 
  of 
  480 
  fathoms, 
  on 
  a 
  bottom 
  of 
  

   gray 
  mud. 
  

  

  The 
  examples 
  in 
  the 
  collection 
  came 
  from 
  the 
  east 
  coast 
  of 
  Luzon 
  ; 
  

   Sibuko 
  Bay, 
  Borneo; 
  and 
  from 
  the 
  Celebes; 
  none 
  were 
  taken 
  in 
  the 
  

   interinsular 
  waters 
  of 
  the 
  Phihppine 
  Archipelago. 
  

  

  The 
  number 
  of 
  detached 
  pectoral 
  rays 
  varies 
  from 
  8 
  to 
  10. 
  

  

  This 
  species 
  differs 
  from 
  longimana 
  in 
  the 
  much 
  larger 
  eye, 
  longer 
  

   snout, 
  broader 
  interorbital, 
  shorter 
  ventrals 
  and 
  pectorals, 
  rudimen- 
  

   tary 
  character 
  of 
  pyloric 
  coeca, 
  smaller 
  scales 
  and 
  lighter 
  coloration. 
  

   It 
  appears 
  to 
  be 
  closely 
  related 
  to 
  D. 
  multifilis 
  (Alcock) 
  but 
  identifica- 
  

   tion 
  from 
  the 
  description 
  and 
  figure 
  of 
  that 
  species 
  is 
  impossible. 
  

  

  HOMOSTOLUS 
  Smith 
  and 
  Radcliffe, 
  new 
  genus. 
  

  

  This 
  genus 
  is 
  closely 
  related 
  to 
  Neobythites, 
  distinguished 
  by 
  the 
  

   elongate, 
  sharply 
  pointed, 
  compressed 
  head 
  which 
  is 
  very 
  cavernous 
  

   but 
  lacks 
  the 
  high 
  crests 
  characteristic 
  of 
  Glyptophidium; 
  by 
  the 
  

   narrow 
  bands 
  of 
  teeth, 
  especially 
  those 
  on 
  mandible, 
  and 
  by 
  the 
  long, 
  

   simple 
  ventral 
  filaments, 
  each 
  composed 
  of 
  2 
  fused 
  rays. 
  The 
  eyes 
  

   are 
  very 
  large; 
  the 
  lateral 
  line 
  is 
  broad, 
  ^vith 
  a 
  clearly 
  defined 
  cover- 
  

   ing 
  of 
  skin 
  above 
  the 
  scales, 
  the 
  latter 
  wider 
  than 
  those 
  above 
  and 
  

   beiow 
  and 
  distinctly 
  modified. 
  

  

  Type 
  of 
  the 
  genus. 
  — 
  Homostolus 
  acer, 
  new 
  species. 
  

  

  