﻿NO. 
  1948. 
  NEW 
  BROTULID 
  AND 
  CARAPID 
  FISHES— 
  RADCLIFFE. 
  173 
  

  

  E.), 
  east 
  of 
  Masbate 
  Island, 
  at 
  a 
  depth 
  of 
  218 
  fathoms, 
  on 
  a 
  bottom 
  of 
  

   green 
  mud. 
  

  

  The 
  characters 
  of 
  this 
  species 
  agree 
  quite 
  closely 
  with 
  those 
  given 
  

   for 
  the 
  genus 
  Bythites, 
  the 
  main 
  difference 
  appearing 
  to 
  be 
  the 
  pres- 
  

   ence 
  of 
  scales 
  on 
  cheek, 
  opercle, 
  and 
  top 
  of 
  head 
  posteriorly. 
  These 
  

   are 
  inconspicuous 
  and 
  might 
  easily 
  be 
  overlooked. 
  

  

  XENOBYTHITES 
  Smith 
  and 
  Radcliffe, 
  new 
  genus. 
  

  

  Body 
  relatively 
  short, 
  covered 
  with 
  small, 
  thin 
  scales. 
  Head 
  high 
  

   depressed 
  anteriorly, 
  cheeks 
  and 
  opercles 
  covered 
  with 
  small, 
  incon- 
  

   spicuous 
  scales; 
  a 
  few 
  small 
  cilia 
  scattered 
  over 
  naked 
  portions 
  of 
  

   head; 
  bones 
  of 
  skull 
  firm; 
  snout 
  low; 
  upper 
  jaw 
  very 
  sUghtly 
  over- 
  

   hanging 
  lower; 
  narrow 
  bands 
  of 
  sHghtly 
  unequal 
  villiform 
  teeth 
  on 
  

   jaws 
  and 
  palatines; 
  patch 
  on 
  vomer 
  arched, 
  the 
  teeth 
  mainly 
  in 
  2 
  

   rows; 
  eyes 
  lateral; 
  opercle 
  armed 
  with 
  a 
  slender 
  spine; 
  margin 
  of 
  

   preopercle 
  armed 
  with 
  5 
  or 
  6 
  spines, 
  portion 
  between 
  spines 
  incised 
  ; 
  

   lateral 
  line 
  inconspicuous, 
  interrupted 
  in 
  the 
  middle, 
  the 
  two 
  parts 
  

   overlapping 
  the 
  same 
  vertical. 
  Branchiostegals 
  8; 
  gill-filaments 
  

   short 
  ; 
  6 
  developed 
  gill-rakers 
  on 
  first 
  arch 
  ; 
  pseudobranchiae 
  consist- 
  

   ing 
  of 
  2 
  small 
  filaments; 
  a 
  short, 
  thick, 
  flap-like 
  appendage 
  on 
  each 
  

   side 
  of 
  the 
  pylorus. 
  Vertical 
  fins 
  united, 
  dorsal 
  about 
  85, 
  anal 
  about 
  

   72; 
  ventrals 
  absent; 
  tips 
  of 
  clavicles 
  apparently 
  not 
  united; 
  pec- 
  

   torals 
  simple. 
  Species 
  viviparous. 
  

  

  Type 
  of 
  the 
  genus. 
  — 
  Xenobythites 
  armiger, 
  new 
  species. 
  

  

  XENOBYTHITES 
  ARMIGER 
  Smith 
  and 
  Radcliffe, 
  new 
  species. 
  

  

  Plate 
  16, 
  fig. 
  4. 
  

  

  Dorsal 
  about 
  85 
  ; 
  caudal 
  8 
  ; 
  anal 
  72 
  ; 
  pectorals 
  22 
  . 
  

  

  Head 
  3.23 
  (3.47 
  m 
  total 
  length), 
  short, 
  depressed 
  anteriorly, 
  very 
  

   strongly 
  arched 
  posteriorly, 
  considerably 
  deeper 
  than 
  broad, 
  naked 
  

   portions 
  covered 
  with 
  small, 
  scattered 
  cilia; 
  suborbital 
  porous; 
  body 
  

   short, 
  deep, 
  strongly 
  compressed 
  posteriorly, 
  belly 
  decurved; 
  greatest 
  

   depth 
  3.64 
  (3.90 
  in 
  total 
  length); 
  eye 
  5.50 
  in 
  head, 
  1.32 
  in 
  snout, 
  1.9 
  

   in 
  interorbital, 
  circular, 
  lateral, 
  but 
  situated 
  close 
  to 
  dorsal 
  surface; 
  

   snout 
  4.15, 
  dorsal 
  contour 
  longitudinally 
  very 
  oblique, 
  laterally 
  evenly 
  

   rounded; 
  mouth 
  broad, 
  oblique, 
  lower 
  jaw 
  slightly 
  included; 
  maxil- 
  

   lary 
  2, 
  extending 
  about 
  0.5 
  an 
  eye 
  diameter 
  beyond 
  vertical 
  from 
  

   posterior 
  margin 
  of 
  eye, 
  the 
  upper 
  margin 
  slipping 
  under 
  suborbital, 
  

   the 
  posterior 
  end 
  expanded, 
  about 
  as 
  wide 
  as 
  eye; 
  bands 
  of 
  slightly 
  

   unequal 
  villiform 
  teeth 
  on 
  jaws 
  and 
  palatines; 
  patch 
  on 
  vomer 
  arched, 
  

   mainly 
  in 
  2 
  rows; 
  interorbital 
  2.90, 
  broad, 
  slightly 
  convex; 
  opercle 
  

   armed 
  with 
  a 
  single 
  slender 
  spine; 
  preopercle 
  armed 
  with 
  5 
  or 
  6 
  small, 
  

   sharp 
  spines, 
  the 
  portion 
  between 
  spines 
  incised; 
  pseudobranchise 
  

   consisting 
  of 
  2 
  small 
  filaments; 
  gill-filaments 
  short; 
  6 
  developed 
  

   gill-rakers 
  on 
  first 
  arch; 
  branchiostegals 
  8; 
  tips 
  of 
  clavicular 
  bones 
  

  

  