﻿906 
  REPORT 
  OF 
  COMMISSIONER 
  OF 
  FISH 
  AND 
  FISHERIES. 
  [118] 
  

  

  466.— 
  ASTROSCOPUS 
  l 
  Brevoort. 
  

  

  1430. 
  Astroscopus 
  anoplus 
  Cuv. 
  & 
  Val. 
  S. 
  

  

  Family 
  OXXXIY.— 
  OPISTHOGNATHID^. 
  (103 
  ft.) 
  

  

  467.— 
  GNATHYPOPS 
  Gill. 
  (3386.) 
  

  

  1431. 
  Gnathypops 
  rhomaleus 
  i 
  Jordan 
  & 
  Gilbert. 
  P. 
  

  

  1432. 
  Gnathypops 
  my 
  stacinus 
  3 
  Jordan. 
  W. 
  

  

  1433. 
  Gnathypops 
  maxillosus 
  Poey. 
  W. 
  

  

  468.— 
  OPISTHOGNATHUS 
  Cuv. 
  & 
  Val. 
  (339 
  6.) 
  

  

  1434. 
  Opisthognathus 
  scaphiura 
  Goode 
  & 
  Beau. 
  W. 
  (977 
  c.) 
  

  

  1435. 
  Opisthognathus 
  lonchura 
  Jordau 
  & 
  Gilbert. 
  W. 
  (977 
  d.) 
  

  

  1436. 
  Opisthognathus 
  punctata 
  4 
  Peters. 
  P. 
  

  

  1 
  Astroscopus 
  Brevoort. 
  

   (Agnus 
  Giinther.) 
  

  

  (Brevoort 
  MSS. 
  ; 
  Gill, 
  Proc. 
  Ac. 
  Nat. 
  Sci.,Phila., 
  1860, 
  20; 
  type 
  Uranoscopus 
  anoplos. 
  

   C.&V.) 
  

  

  This 
  genus 
  is 
  distinguished 
  from 
  UpsUonphorus 
  chiefly 
  by 
  the 
  armature 
  of 
  the 
  head, 
  

   which 
  is 
  entirely 
  covered 
  above 
  by 
  a 
  rugose 
  coat 
  of 
  mail 
  as 
  in 
  Uranoscopus. 
  In 
  other 
  

   respects 
  it 
  agrees 
  with 
  TJpsUonphorus, 
  which 
  should, 
  perhaps, 
  be 
  regarded 
  as 
  a 
  subge- 
  

   ueric 
  section 
  of 
  Astroscopus. 
  One 
  species 
  known. 
  

  

  Astroscopus 
  anoplus 
  (Cuv. 
  & 
  Val.). 
  

  

  Jet 
  black 
  above 
  and 
  on 
  lower 
  jaw 
  and 
  spinous 
  dorsal 
  ; 
  belly 
  and 
  other 
  fins 
  whitish; 
  

   top 
  of 
  head 
  with 
  no 
  naked 
  areas 
  except 
  at 
  base 
  of 
  prem 
  axillary 
  ; 
  cheeks 
  covered 
  with 
  

   smooth 
  skin 
  except 
  the 
  narrow 
  suborbital 
  and 
  a 
  long 
  slender 
  preorbital 
  strip 
  lying 
  

   along 
  the 
  maxillary. 
  A 
  transverse 
  depression 
  behind 
  the 
  eyes 
  ; 
  occipital 
  ridges 
  promi- 
  

   nent, 
  bluntish. 
  Humeral 
  spine 
  obsolete 
  ; 
  preopercle 
  with 
  two 
  blunt 
  processes, 
  the 
  

   lower 
  turned 
  downwards 
  and 
  forwards. 
  Scales 
  minute, 
  obsolete 
  below 
  ; 
  no 
  intralabial 
  

   filament. 
  Head 
  as 
  broad 
  as 
  deep 
  ; 
  head 
  2-J- 
  ; 
  depth 
  3£. 
  D. 
  IV-14 
  ; 
  A. 
  13. 
  New 
  York 
  

   to 
  Key 
  West. 
  No 
  specimens 
  known 
  more 
  than 
  2-J 
  inches 
  in 
  length. 
  

  

  Uranoscopus 
  anoplos 
  C. 
  & 
  V., 
  VIII, 
  4 
  93, 
  1S31. 
  Agnus 
  anoplus 
  Gtinther, 
  II, 
  229 
  (not 
  

   Astroscopus 
  anoplus 
  of 
  most 
  recent 
  authors). 
  

  

  2 
  Opisthognathus 
  rhomaleus 
  Jordau 
  & 
  Gilbert, 
  Proc. 
  U. 
  S. 
  Nat. 
  Mus., 
  1881, 
  276. 
  Gulf 
  

   of 
  California. 
  

  

  3 
  Gnathypops 
  mystacinus 
  Jordan, 
  Pioc. 
  U. 
  S. 
  Nat. 
  Mus., 
  1884. 
  

  

  * 
  Opisthognathus 
  punctatus 
  Peters, 
  Berliner 
  Monatsberichte, 
  1869; 
  Jordan, 
  Proc. 
  Ac. 
  

   Nat. 
  Sci. 
  Phila., 
  1883, 
  290. 
  Mazatlan. 
  

  

  Head 
  everywhere 
  finely 
  speckled 
  with 
  black, 
  the 
  body 
  more 
  coarsely 
  and 
  irregularly 
  

   spotted. 
  Pectoral 
  finely 
  and 
  closely 
  speckled, 
  its 
  edge 
  plain. 
  Ventral 
  fin 
  dusky, 
  

   similarly 
  marked. 
  Dorsal 
  without 
  large 
  black 
  blotch, 
  finely 
  spotted, 
  the 
  spots 
  behind 
  

   gradually 
  forming 
  the 
  boundaries 
  of 
  white 
  ocelli, 
  the 
  base 
  of 
  the 
  fins 
  having 
  rings 
  

   of 
  white 
  around 
  black 
  spots, 
  the 
  upper 
  part 
  with 
  dark 
  rings 
  around 
  pale 
  spots. 
  

   Caudal 
  with 
  pale 
  spots, 
  its 
  edge, 
  like 
  that 
  of 
  the 
  dorsal, 
  somewhat 
  dusky, 
  not 
  black. 
  

   Anal 
  with 
  a 
  broad, 
  blackish 
  edge, 
  and 
  with 
  dark 
  spots, 
  those 
  near 
  the 
  base 
  of 
  the 
  

   fin 
  largest. 
  Lining 
  membrane 
  of 
  maxillary 
  with 
  the 
  usual 
  bauds 
  of 
  white 
  and 
  inky 
  

   black. 
  

  

  Scales 
  very 
  small, 
  about 
  125 
  in 
  lateral 
  line. 
  Dorsal 
  spines 
  continuous 
  with 
  the 
  

   soft 
  rays. 
  D. 
  28; 
  A. 
  18. 
  No 
  vomerine 
  teeth. 
  Maxillary 
  very 
  long, 
  extending 
  slightly 
  

   beyond 
  head. 
  

  

  Only 
  the 
  type 
  of 
  this 
  species 
  is 
  yet 
  known. 
  

  

  