﻿164 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MU8EUM. 
  tol. 
  44. 
  

  

  plate-like 
  scales 
  much 
  less 
  distinct 
  than 
  in 
  other 
  described 
  forms 
  and 
  

   the 
  band 
  of 
  small 
  scales 
  covering 
  plates 
  more 
  nearly 
  equal 
  in 
  size 
  to 
  

   those 
  above 
  and 
  below. 
  

  

  Dorsal 
  and 
  anal 
  continuous 
  with 
  the 
  caudal; 
  origin 
  of 
  dorsal 
  

   slightly 
  in 
  advance 
  of 
  base 
  of 
  pectoral, 
  its 
  distance 
  from 
  tip 
  of 
  snout 
  

   slightly 
  greater 
  than 
  length 
  of 
  head, 
  4.52 
  (4.78 
  in 
  total 
  length); 
  

   origin 
  of 
  anal 
  three-fourths 
  of 
  a 
  head 
  length 
  behind 
  base 
  of 
  lower 
  

   pectoral 
  rays, 
  its 
  distance 
  from 
  tip 
  of 
  snout 
  2.51 
  (2.66 
  in 
  total 
  length) 
  ; 
  

   ventrals 
  absent; 
  pectoral 
  1.72 
  in 
  head, 
  broader, 
  and 
  having 
  more 
  

   rays 
  than 
  other 
  described 
  forms. 
  

  

  Color 
  in 
  alcohol: 
  Clove 
  brown, 
  fins 
  and 
  branchiostegal 
  membranes 
  

   somewhat 
  darker; 
  inside 
  of 
  gill-covers 
  and 
  peritoneum 
  dark 
  seal 
  

   brown. 
  

  

  Type.~C&t. 
  No. 
  74146, 
  U.S.N.M., 
  54.5 
  cm. 
  in 
  length, 
  taken 
  with 
  

   a 
  beam 
  trawl 
  at 
  station 
  5648 
  (lat. 
  5° 
  35' 
  00'' 
  S.; 
  long. 
  122° 
  20' 
  00" 
  

   E.), 
  in 
  Buton 
  Strait, 
  at 
  a 
  depth 
  of 
  559 
  fathoms, 
  on 
  a 
  bottom 
  of 
  green 
  

   mud. 
  

  

  The 
  greater 
  number 
  of 
  rays 
  in 
  dorsal, 
  anal, 
  and 
  pectoral; 
  the 
  firmer 
  

   texture 
  of 
  the 
  scaly 
  skin 
  of 
  head 
  and 
  body 
  rendering 
  the 
  crests 
  of 
  

   head 
  and 
  the 
  enlarged 
  plates 
  of 
  lateral 
  line 
  much 
  less 
  conspicuous; 
  

   the 
  outer 
  band 
  of 
  small 
  scales 
  covering 
  plates 
  scarcely 
  differentiated 
  

   from 
  those 
  above 
  and 
  below; 
  and 
  the 
  character 
  of 
  the 
  teeth 
  distin- 
  

   guish 
  this 
  species 
  from 
  other 
  known 
  forms. 
  

  

  HYPOPLEURON 
  Smith 
  and 
  Radcliffe, 
  new 
  genus. 
  

  

  Body 
  slender, 
  elongate, 
  Catxtyx-like, 
  covered 
  with 
  small 
  cycloid 
  

   scales; 
  head 
  low, 
  depressed, 
  elongate, 
  scaled; 
  teeth 
  on 
  mandible 
  in 
  a 
  

   narrow 
  band, 
  villiform, 
  some 
  of 
  those 
  in 
  outer 
  row 
  somewhat 
  en- 
  

   larged; 
  a 
  pair 
  of 
  small 
  canine-like 
  teeth 
  on 
  either 
  side 
  of 
  symphysis 
  

   of 
  upper 
  jaw, 
  premaxillary 
  band 
  villiform; 
  patch 
  on 
  vomer 
  n 
  -shaped, 
  

   some 
  of 
  the 
  teeth 
  enlarged; 
  band 
  on 
  palatines 
  narrow 
  with 
  a 
  few 
  

   enlarged 
  teeth; 
  eyes 
  lateral, 
  high; 
  opercle 
  and 
  preopercle 
  unarmed. 
  

   Vertical 
  fins 
  united; 
  ventrals 
  very 
  small, 
  simple, 
  close 
  together, 
  

   situated 
  behind 
  tip 
  of 
  humeral 
  symphysis; 
  pectorals 
  elongate, 
  narrow. 
  

   Gills 
  4, 
  gill-filaments 
  well 
  developed, 
  only 
  3 
  developed 
  gill-rakers 
  on 
  

   first 
  arch; 
  pseudobranchiae 
  present. 
  Branchiostegals 
  8. 
  Pyloric 
  

   cceca 
  well 
  developed. 
  Lateral 
  line 
  broad 
  anteriorly, 
  narrowing 
  

   posteriorly 
  and 
  disappearing 
  on 
  tail, 
  structurally 
  very 
  much 
  like 
  

   Lamprogrammus, 
  possessing 
  the 
  outer 
  band 
  of 
  small 
  scales 
  pierced 
  

   at 
  regular 
  intervals 
  by 
  pores, 
  and 
  an 
  inner 
  series 
  of 
  enlarged 
  plate- 
  

   like 
  scales. 
  

  

  Parapophyses 
  of 
  abdominal 
  vertebr£e 
  broadened, 
  lengthened, 
  and 
  

   bent 
  inward 
  at 
  ends 
  and 
  sides, 
  the 
  whole 
  forming 
  a 
  large 
  bony 
  case 
  con- 
  

   taining 
  the 
  air 
  bladder; 
  the 
  thickened 
  ventral 
  wall 
  of 
  the 
  latter 
  con- 
  

   necting 
  the 
  free 
  ends 
  of 
  the 
  parapophyses; 
  ribs 
  of 
  the 
  vertebrae 
  which 
  

  

  